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Tremco Commercial Sealants & Waterproofing Vegetated Roof Systems
 
         
SECTION 07 55 63
 
         
VEGETATED ROOF SYSTEMS
 
         
 
         
Copyright 2018 - 2018 ARCAT, Inc. - All rights reserved

          ** NOTE TO SPECIFIER ** Tremco Commercial Sealants & Waterproofing; commercial sealants, waterproofing, coatings, sealants, and vegetated roofing systems.
This section is based on the products of Tremco Commercial Sealants & Waterproofing, which is located at:
3735 Green Rd.
Beachwood, OH 44122
Toll Free Tel: 800-321-7906
Tel: 216-292-5000
Fax: 216-766-5543
Email: request info
Web: www.tremcosealants.com

[ Click Here ] for additional information.

Tremco Commercial Sealants & Waterproofing (CS&W) is North America's foremost supplier of sealant, weatherproofing, and passive fire control solutions for commercial and residential construction and industrial applications. For generations, Tremco CS&W has successfully provided products and services to architects, engineers, home builders, contractors and building owners worldwide. When it comes to protecting and weatherproofing the entire building envelope, Tremco CS&W is uniquely positioned to provide single-source products, services and solutions.
 
          PART 1GENERAL
 
          1.1SECTION INCLUDES
          ** NOTE TO SPECIFIER ** Delete, add items below not required for project.
 
          A.Vegetated Roofing Systems:
          1.Extensive Vegetated Roof Systems: Growing media and planting material.
          a.VR HydraMax.
          b.VR Lite.
          2.Semi-Intensive and Intensive Vegetated Roof Systems: Growing media and planting material.
          a.VR HydraMax.
          b.VR Max.
          3.Pre-Vegetated Modular Vegetated Roof Systems: Growing media and planting material.
          a.VR Mod.
 
          B.Vegetation-free zone material.
 
          C.Waterproofing Systems:
          1.Cold Fluid Applied: TREMproof 250GC.
          2.Cold Fluid Applied: Dual Waterproofing by Tremco Incorporated.
          3.Hot Fluid-Applied: TREMproof 6100.
          4.Polyurethane-Methacrylate (PUMA): TREMproof PUMA, polyurethane-methacrylate.
          ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
          1.2RELATED SECTIONS
 
          A.Section 01 90 00 - Sustainable Design Requirements; for additional LEED requirements.
 
          B.Section 03 31 00 - Structural Concrete.
 
          C.Section 03 30 00 - Cast-in-Place Concrete.
 
          D.Division 07 - Thermal and Moisture Protection.
 
          E.Section 07 27 26 - Fluid-Applied Membrane Air Barriers .
 
          F.Section 07 72 13 - Manufactured Curbs.
 
          G.Section - .
 
          H.Section - .
 
          I.Section 02 20 00 - Assessment.
 
          J.Section 32 91 16.13 - Blanket Planting Soil Stabilization.
 
          1.3REFERENCES
          ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
          A.ASTM International (ASTM):
          1.ASTM C 836 - Standard Specification for High-Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane for Use with Separate Wearing Course.
          2.ASTM C 920 - Standard Specification for Elastomeric Joint Sealants.
          3.ASTM D 4258 - Standard Practice for Surface Cleaning Concrete for Coating.
          4.ASTM D 4263 - Standard Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method.
          5.ASTM D 4716 - Standard Test Method for Determining the (In-plane) Flow Rate per Unit Width and Hydraulic Transmissivity of a Geosynthetic Using a Constant Head.
          6.ASTM E 2397 - Standard Practice for Determination of Dead Loads and Live Loads Associated with Vegetative (Green) Roof Systems.
          7.ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
          8.ASTM E 96/E 96M - Standard Test Methods for Water Vapor Transmission of Materials.
          9.ASTM E 2398 - Standard Test Method for Water Capture and Media Retention of Geocomposite Drain Layers for Vegetative (Green) Roof Systems.
          10.ASTM E 2399 - Standard Test Method for Maximum Media Density for Dead Load Analysis of Vegetative (Green) Roof Systems.
          11.ASTM E 2400 - Standard Guide for Selection, Installation, and Maintenance of Plants for Green Roof Systems.
 
          B.Canadian General Standards Board (CGSB):
          1.CGSB-37.50-M89: Hot-Applied, Rubberized Asphalt for Roofing and Waterproofing.
 
          C.Underwriters Laboratories (UL) Class A.
 
          1.4DEFINITIONS
 
          A.Vegetated Roof: Area of planting and landscaping, on a waterproofed substrate of a man-made structure, at a level above ground level. A multi-layered, single media system designed to grow plants and to retain and retard rainwater runoff from the roof.
          1.Extensive Vegetated Roof: Landscape assembly with less than 6 in (152 mm) of engineered growing media, with hardy, drought-tolerant plant species.
          2.Semi-Intensive and Intensive Vegetated Roof: Landscape assembly with more than 6 in (152 mm) of engineered growing media and a wide variety of plant species including shrubs and trees.
 
          B."C" Factor: Runoff coefficient used in Rational Method; the ratio of runoff to precipitation received over a given area.
 
          C.Curve Number (CN): Predicts direct runoff or infiltration from rainfall, developed by USDA Natural Resource Conservation Service. Considers soil type, land use, site conditions, drainage patterns, pervious and impervious coverage.
 
          D.Planted Area; Vegetated Area: Areas to be planted.
 
          E.Plants; Plant Material: Vegetation in general, including trees, shrubs, vines, ground covers, ornamental grasses, bulbs, corms, tubers, or herbaceous vegetation.
 
          1.5SUBMITTALS
 
          A.Submit under provisions of Section 01 30 00 - Administrative Requirements.
 
          B.Product Data: Manufacturer's data sheets on each product to be used, including:
          1.Preparation instructions and recommendations.
          2.Storage and handling requirements and recommendations.
          3.Installation methods.
 
          C.Shop Drawings: Include roof plans, slopes, drain locations; details of vegetated roof systems and accessories.
          1.Walkway pavers and aggregate surfacing.
          2.Indicate planted areas correlated with planting schedule.
          3.Coordinate with requirements for membrane leak detection system.
 
          D.US Occupational Health and Safety Administration's (OHSA): For components of vegetated roof assembly.
          1.Hazard Communications Standard (HCS).
          2.Safety Data Sheets (SDS).
 
          E.Verification Samples: Two samples for the following components of vegetated roof system.
          ** NOTE TO SPECIFIER ** Delete items not required.
          1.Root Barrier: 12 x 12 in (305 x 305 mm).
          2.Prefabricated Drainage Course: 12 x 12 in (305 x 305 mm).
          3.Air Layer: 12 x 12 in (305 x 305 mm).
          4.Moisture Retention Mat: 12 x 12 in (305 x 305 mm).
          5.Drainage/water retention component: 12 x 12 in (305 x 305 mm).
          6.Filter fabric: 12 x 12 in (305 x 305 mm).
          7.Growing media: 1 quart (0.95 L) volume of each growing media, in sealed plastic bags labeled with content and source. Samples shall be typical of growing media to be furnished. Provide an accurate representation of texture and composition.
 
          F.Manufacturer's Certificates: Certify products meet or exceed specified requirements.
          ** NOTE TO SPECIFIER ** Delete waterproofing certification if not required.
 
          G.Waterproofing Certification:
          1.From an approved independent testing laboratory experienced in testing waterproofing membrane for all applicable ASTM methods.
          2.Show full time quality control of facilities manufacturing waterproofing membrane.
          3.Show each batch of material is tested ensuring conformance with manufacturer's published physical properties.
          4.ISO 9001-2000 approval for waterproofing membrane manufacturing plant.
          5.Evidence waterproofing membrane is Class A listed with Underwriters Laboratories.
 
          H.US Occupational Health and Safety Administration's (OHSA) Hazard Communications Standard (HCS): Safety Data Sheets (SDS): For components of vegetated roof assembly:
 
          I.Product Testing Data for ASTM E 2399: Test reports from a certified laboratory for growing media, tested within current twelve month period.
 
          J.Stormwater Performance Data: Predicted performance of specific vegetated roof system for the Project:
          1.Composite Curve Number (CN).
          2.Composite C-Factor.
          3.Calculations based on actual testing of supplier's vegetated roof system components used for the Project including regionally specific growing media formulation and water retention/drainage materials.
          a.Account for vegetated and un-vegetated portions of roof as well as local climatic conditions including rainfall depth, intensity, duration, and timing.
 
          K.Manufacturer Field Inspection Reports: Written reports and acceptance of vegetated roof system Installation based on regular inspections. Include weather conditions, description of work performed, tests performed, defective work observed, and corrective actions taken.
 
          L.Evidence indicating water is available at roof level ensuring the vegetation can receive sufficient moisture through proper maintenance of roofing system.
 
          M.Warranty sample.
 
          N.Manufacturer's maintenance instructions, recommendations for periodic inspection, cleaning and maintenance of vegetated roofing and waterproofing.
          1.Maintenance Reports: Submitted quarterly. Signed by approved representation of vegetated roof system Installer.
 
          1.6QUALITY ASSURANCE
          ** NOTE TO SPECIFIER ** Delete the following paragraph if water proofing is not a specified in this section.
 
          A.Installer Qualifications; Waterproofing: Certified by waterproofing system manufacturer.
          1.Five years experience in application of membrane product.
          2.List of three projects satisfactorily completed within the last five years, of similar scope and complexity to this project.
 
          B.Installer Qualifications; Vegetated Roofing Systems: Certified by roofing system manufacturer, whose work has resulted in successful establishment of plants.
          1.Five years experience: Application of growing media on elevated roof decks and vegetated roof assembly installation.
          2.List of three projects satisfactorily completed within the past five years, of similar scope and complexity to this project.
          3.Fall Arrest Certificates: For employees of Installer when working on roof top.
          4.Field Supervision: Full time when work is in progress.
          ** NOTE TO SPECIFIER ** Delete the following paragraph if waterproofing is specified in this section.
 
          C.Manufacturer Qualifications; Waterproofing: Five years supplying waterproofing membrane on projects of similar scope and complexity.
          1.Resistant to acids (fertilizers, building washes and acid rain).
          2.Maintain membrane thickness during application.
          3.Technical Staff: Assists contractor, in application and final inspection of waterproofing.
 
          D.Manufacturer Qualifications; Vegetated Roofing Systems: Five years experience supplying vegetated roof systems on projects of similar complexity.
 
          E.Source Limitations: Certification that components of vegetated roofing system and roof membrane are supplied and warranted by a single-source manufacturer ensuring system compatibility and integrity:
          ** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
 
          F.Mock-Up: Provide a mock-up for evaluation of application workmanship.
          1.Finish Area: 10 x 10 ft (3048 x 3048 mm), location designated by Architect, demonstrating assembly, installation and workmanship.
          2.Refinish mock-up area as required to produce acceptable work.
          3.Approved mock-ups may become part of the completed Work if undisturbed at time of Substantial Completion.
 
          G.Electronic Leak Testing: By installation of electro field vector mapping (EFVM) system administered by a qualified testing agency. Flood testing is unacceptable.
 
          H.Health and Safety Testing: Accordance to health and safety requirements.
 
          I.Pre-Installation Meetings: Verify project requirements, substrate conditions, construction documents, details and manufacturer's warranty requirements.
 
          1.7DELIVERY, STORAGE, AND HANDLING
 
          A.Non-vegetation Components:
          1.Delivery: In manufacturer's original, unopened, undamaged rolls/pallets with identification labels intact.
          2.Storage and Protection: Store in flat, dry, well ventilated area out of direct sunlight, under cover, protected from weather, moisture and excessive dryness and construction activities. Protect from damage.
 
          B.Vegetation:
          1.Delivery: In a manner preserving vegetation quality.
          a.Protect vegetation from temperature and wind damage.
          b.Transport Time; Less than 1 Day: Closed or open trailer.
          c.Transport Time; Greater than 1 Day: Climate-controlled trailer.
          2.Upon Delivery: Off-load, remove plastic wrap (if applicable). Install within 12 hours.
          a.Installation Within 12 Hours is not Achievable: Reserve holding area to store and maintain plants until installation.
          1)Pre-vegetated mats: Unroll and maintain until installation.
 
          1.8PROJECT CONDITIONS
 
          A.Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.
          ** NOTE TO SPECIFIER ** Delete waterproofing if not required.
          1.Waterproofing:
          a.Protect substrates from environmental conditions that affect performance.
          b.Do not apply to wet substrate or during snow, rain, fog, or mist.
          c.Ensure materials are cured before covering with other materials.
          2.Vegetation Handling:
          a.Install according to optimal conditions, conducive to plant establishment and survival based upon local hardiness zone as defined by USDA.
          b.Protect of vegetation and components. Prevent damage and erosion.
          3.Foot Traffic: Prohibited during vegetation establishment. Thereafter for maintenance.
 
          1.9WARRANTIES
 
          A.Upon Substantial Completion: Contractor provides Owner a single-source manufacturer warranty.
          ** NOTE TO SPECIFIER ** Delete the waterproofing options not required or delete all three options if waterproofing is not included of this specification.
          1.Waterproofing Warranty Period: ______ years.
          2.Waterproofing: Included in vegetated roofing system warranty.
          3.Waterproofing: Refer to appropriate section in Division 07 concerning the roofing membrane for waterproofing/roofing system warranty and continuing maintenance service requirements.
          4.Vegetative Roofing System: Manufacturer and Installer agree to repair or replace vegetated roofing system components, excluding vegetation, that fail in materials or workmanship within specified warranty period.
          ** NOTE TO SPECIFIER ** Delete the remaining warranty options not required.
          5.Warranty Period: ______ years from date of Substantial Completion.
          6.Warranty Period: 20 years from date of Substantial Completion.
          7.Warranty for Membrane Leak Detection System: ______.
          8.Warranty for Membrane Leak Detection System: Included in vegetated roofing system warranty.
          9.Warranty for Membrane Leak Detection System: Refer to appropriate section in Division 07 the membrane leak detection system.
          10.Warranty for Irrigation System: ______.
          11.Warranty for Irrigation System: Included in vegetated roofing system warranty.
          12.Warranty for Irrigation System: Refer to appropriate section in Division 32 for plant irrigation of vegetated roofing systems.
 
          B.Vegetation Warranty: Manufacturer and Installer jointly agree to repair or replace plantings and accessories that fail in materials, workmanship, or growth within the warranty period.
          1.Groundcover Foliage: Achieve and maintain 85 percent minimum foliage cover over planting area, when averaged within 2 square foot increments, commencing with installation, at the end of the warranty period. Provide extended warranty for remainder of original warranty period for replaced plant material.
          2.Herbaceous Perennials, Ornamental Grasses, and Vines: Achieve and maintain 75 percent minimum horticultural viability over planting area commencing with installation, through the duration of this warranty. A limit of one replacement of each plant will be required except for losses or replacements due to failure to comply with requirements.
          3.Failures include, but not limited to, death and unsatisfactory growth of plant materials except for defects resulting from abuse, neglect by Owner, or incidents beyond Contractor's control.
          4.Warranty Period from Date of Installation:
          ** NOTE TO SPECIFIER ** Delete remaining items not required.
          a.Vegetation: Two years
          b.Ground Covers: ______.
          c.Herbaceous Perennials, Ornamental Grasses, and Vines: ______.
          d.Woody Plants and Shrubs: ______.
          e.Specimen Trees, Woody Plants, and Shrubs: ______.
          f.Specimen Trees, Woody Plants, and Shrubs: See appropriate section in Division 32 for plants.
 
          1.10MAINTENANCE SERVICE FOR PLANT MATERIALS
 
          A.Initial Maintenance Service: By competent employees of vegetated roof system installer as required in Part 3 in this specification. Maintenance begins when plants are installed and continues until vegetation is acceptably healthy and well established but for not less than the following maintenance period:
          1.Site Visits: Monthly site visits the first year performing required tasks under this Service. One site visit in second year by a qualified Manufacturer's representative.
          2.Growing Media Testing and Amending: Test during second year of initial maintenance period. Apply amendments to growing media as required. Comply with local watershed authority stormwater nutrient run-off restrictions.
          3.Include the following remedial actions as a minimum:
          a.During inspection, remove and replace dead and sick plants unless required to plant in the succeeding planting season.
          b.Trim plants and remove weeds. Provide supplemental water if required at time of inspection and service.
          c.Reports: Written report to Owner including health assessment of vegetation and growing media and detailing of work performed with each site visit.
          d.Initial Maintenance Period: Equal to warranty period under "Warranty for Plant Growth" Paragraph above.
 
          B.Continuing Maintenance Service: By competent employees of vegetated roof system Installer. Manufacturer's standard continuing maintenance agreement, commencing on date initial maintenance service under warranty is concluded. Include the following:
          1.Site Visits: One site visit every two months during growing season per subsequent year to perform required tasks under this Service.
          2.Growing Media Testing and Amending: Testing annually. Apply amendments as required.
          3.Supplemental Water: Add supplemental water as required to bring growing media up to recommended moisture content levels. Inform Owner of recommended adjustment to Owner's watering practices.
          4.Weeding and Plant Material Housekeeping: Remove dead, damaged, and sick growth, weeds and debris. Dispose of debris onsite in Owner's container.
          5.General Housekeeping: Perform rooftop housekeeping in accordance with requirements in Division 07 roofing section.
          6.Reports to Owner: Include health assessment of plant material and growing media, and detailing of work performed, with each site visit.
          7.Continuing Maintenance Period: 20 years from date of substantial completion.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
 
          A.Acceptable Manufacturer: Tremco Commercial Sealants & Waterproofing, which is located at: 3735 Green Rd.; Beachwood, OH 44122; Toll Free Tel: 800-321-7906; Tel: 216-292-5000; Fax: 216-766-5543; Email: request info; Web: www.tremcosealants.com
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 01 section on product options and substitutions.
 
          B.Substitutions: Not permitted.
 
          C.Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
 
          2.2PERFORMANCE REQUIREMENTS
          ** NOTE TO SPECIFIER ** Delete waterproofing membrane if waterproofing is not specified in this section.
 
          A.Waterproofing Membrane: Function as continuous watertight installation and moisture drainage plane. Transition to adjacent flashings and discharge water to the building exterior. Accommodate normal substrate movement, construction material transitions, opening transitions, penetrations, and perimeter conditions without resultant moisture deterioration.
          1.Compatibility: Materials compatible with one another and adjacent materials under conditions of service and application required, as demonstrated by waterproofing manufacturer based on testing and field experience.
 
          B.Vegetated Roof System: Support vegetation, reaching an average coverage of 85 percent minimum coverage of the growing media within 24 months of installation.
          ** NOTE TO SPECIFIER ** Water capacity is determined by factoring the type of plant material, soil depth, and drainage. The first option below is for extensive vegetated rood systems. the second is for semi-intensive or intensive vegetated roof systems. Delete option not required.
          1.Water Capacity: 3 gal per cu ft (410 L per cu m) of water.
          2.Water Capacity: 4.5 gal per cu ft (600 L per cu m) of water.
          3.Calculations include combined water retention capacity of growing media and drainage panel.
          4.Growing Media Calculated per ASTM E2399: Using difference between dry and saturated weight.
          5.Drainage Panel: Found when measured per ASTM E 2398.
          ** NOTE TO SPECIFIER ** Coordinate requirement in drainage paragraph below with design of roof drain system and site stormwater management system. The first option below is for extensive vegetated rood systems. the second is for semi-intensive or intensive vegetated roof systems. Delete option not required.
          6.Rainfall Drainage Capacity: 15 in per hr (38 cm per hr)
          7.Rainfall Drainage Capacity: 5 in per hr (12.7 cm per hr)
          8.Rainfall drainage capacity is based on saturated hydraulic conductivity of growing media in accordance with ASTM E 2399.
 
          C.Structural Design Load: Calculations per ASTM E 2399.
          ** NOTE TO SPECIFIER ** When providing for a single vegetated roofing system, the superimposed dead load may be specified here. However, structural engineers will typically indicate such loading directly on Drawings, as authorities having jurisdiction typically require. When multiple VRA types are required in Project, locations of each and their respective superimposed dead loads must be shown on Drawings. Do not duplicate drawing information in specifications. Coordinate loading requirements with Structural Engineer. Delete option not required.
          1.Superimposed dead load: As indicated on Drawings.
          2.Superimposed dead load: (lbs per sq ft / kg per sq m): ______.
          ** NOTE TO SPECIFIER ** Delete paragraph if not specifying an extensive vegetated roof system
 
          D.Engineered Growing Media: Extensive vegetative roof system
          1.Depth: 2 in (51 mm) minimum.
          2.Depth: As indicated on Drawings.
          3.Bulk Density: 80 lbs per cu ft (1280 kg per cu m) maximum. Calculations per ASTM E 2399.
          4.Dry Weight: 40 lbs per cu ft (640 kg per cu m) minimum. Calculations per ASTM E 2399.
          5.Source Material: Recycled products.
          6.Source Location: Within 500 mile (800 km) radius of Project site.
          ** NOTE TO SPECIFIER ** Delete paragraph if not specifying a semi-intensive or intensive vegetated roof system.
 
          E.Engineered Growing Media: Semi-intensive or intensive vegetative roof system
          1.Depth: 4 in (102 mm) minimum.
          2.Depth: As indicated on Drawings.
          3.Bulk Density: 75 lbs per cu ft (1200 kg per cu m) maximum. Calculations per ASTM E 2399.
          4.Dry Weight: 20 lbs per cu ft (320 kg per cu m) minimum. Calculations per ASTM E 2399.
          5.Source Material: Recycled products.
          6.Source Location: Within 500 mile (800 km) radius of Project site.
          ** NOTE TO SPECIFIER ** Delete paragraph if not specifying a pre-vegetated modular vegetated roof system
 
          F.Engineered Growing Media: Pre-vegetated modular vegetated roof system.
          1.VR Mod Sedum Depth: 4 in (100 mm).
          2.VR Mod Sedum Depth: As indicated on Drawings.
          3.VR Mod Meadow Depth: 4 in (100 mm)
          4.VR Mod Meadow Depth: As indicated on Drawings.
          5.Source Material: Recycled products.
          6.Source Location: Within 500 mile (800 km) radius of Project site.
 
          G.Vegetation; Source Location: Within 500 mile (800 km) radius of Project site.
 
          H.Sustainability: Components from recycled materials sourced within a 500 mile (800 km) radius of Project site when possible.
 
          2.3VEGETATED ROOFING SYSTEMS
          ** NOTE TO SPECIFIER ** Delete paragraphs not required.
 
          A.Basis of Design: Extensive Vegetated Roof Assembly: VR HydraMax Vegetated Roof Assembly System by Tremco Incorporated, www.tremcosealants.com
 
          B.Basis of Design: Lightweight Built-Up Vegetated Roof Assembly: VR Lite Vegetated Roof Assembly System by Tremco Incorporated, www.tremcosealants.com
 
          C.Basis of Design: Semi-Intensive and Intensive Vegetated Roof Assembly: VR HydraMax Vegetated Roof Assembly System by Tremco Incorporated, www.tremcosealants.com
 
          D.Basis of Design: High Performance Built-Up Vegetated Roof Assembly: VR Max Vegetated Roof Assembly System by Tremco Incorporated, www.tremcosealants.com
 
          E.Basis of Design: Pre-vegetated Modular Vegetated Roof Assembly: VR Mod Vegetated Roof Assembly System by Tremco Incorporated, www.tremcosealants.com
 
          2.4VEGETATED ROOF ASSEMBLY COMPONENTS
          NOTE TO SPECIFIER ** Delete root barrier paragraph not required. If specifying a VR HydraMAx extensive roof system, retain the first paragraph and delete the second paragraph.
 
          A.Root Barrier: Heavy-duty 4-ply laminate polymer film, reinforced with a layer of high strength cord grid, flame-retardant. Use with Manufacturer's recommended technical seam tape.
          1.Basis of Design Product: Tremco, Incorporated, VR RootBloc 10.
          2.Physical Properties; Thickness: 10 mils (0.25 mm).
          3.Mechanical Properties:
          a.Elongation at break, ASTM D 7003: 500 percent.
          b.1 in (25 mm) Tensile Strength, ASTM D 7003: 60 lbf per in (267 N per cm).
          c.Grab Tensile Strength, ASTM D 7004: 80 lbf (356 N).
          d.Trapezoid Tear, ASTM D 4533: 52 lbf (231 N).
          e.Hydrostatic Resistance, ASTM D 751: 74 psi (510 kPa).
          f.Mullen Burst, ASTM D 751: 90 psi (621 kPa).
          4.Flame Spread Index - Class "A", ASTM E 84: 5.
 
          B.Root Barrier: Heavy-duty blended linear polyethylene membrane, infused with carbon black additive for UV resistance. Use with Manufacturer's recommended 4-in (100 mm) technical seam tape. Heat welding is an option.
          1.Basis of Design Product: Tremco, Incorporated, VR RootBloc 40.
          2.Physical Properties; Thickness: 40 mils (1.00 mm).
          3.Mechanical Properties:
          a.Elongation at break, ASTM D 6693: 800 percent.
          b.1 in (25 mm) Tensile Strength, ASTM D 6693: 154 lbf (270 N).
          c.Tear Resistance, ASTM D 1004: 22 lbf (98 N).
          d.Puncture Resistance, ASTM D 4833: 60 lbf (267 N).
          e.Mullen Burst, ASTM D 751: 220 psi (1517 kPa).
          f.Specifier: Retain one the following two "Prefabricated Drainage Course" paragraphs below if using within VRA.
          ** NOTE TO SPECIFIER ** Both prefabricated drainage courses below can be used for VR HydraMax. Delete drainage course not required. If not specifying a HydraMax systems delete both paragraphs.
 
          C.Prefabricated Drainage Course: Composite drainage system consisting of a three-dimensional, crush-proof drainage core with filter fabric bonded to one side.
          1.Basis of Design Product: Tremco, Incorporated, VR TremDrain 22F.
          2.Physical Properties; Thickness: 0.275 in (6.98 mm).
          3.Drainage Core Properties:
          a.Tensile Strength: 50 lbs per in (8.74 kN per m).
          b.Transmissivity, ASTM D 4716: 14.50 gal per min per ft. (.003 sq m per sec).
          4.Fabric Properties:
          a.Grab Tensile: 90 lbs (0.40 kN).
          b.Water Flow Rate, ASTM D 4491: 150 gal per min per sq ft (6095 L per min per sq m).
          c.Apparent Opening Size (AOS), ASTM D 4751: 50 US Sieve (0.300 mm).
          d.UV Resistance, ASTM D 4355: 70 percent.
 
          D.Prefabricated Drainage Course: Composite drainage system consisting of a three-dimensional, polypropylene dimple-type drainage sheet with filter fabric bonded to one side.
          1.Basis of Design Product: Tremco, Incorporated, VR TremDrain 40FD.
          2.Physical Properties; Thickness: 0.47 in (12.14 mm).
          3.Drainage Core Properties:
          a.Compressive Strength: 15,000 psf (718 kPa).
          b.Recycled Content: 77 percent.
          4.Fabric Properties:
          a.Grab Tensile: 90 lbs (0.40 kN).
          b.Water Flow Rate, ASTM D 4491: 150 gal per min per sq ft (6095 L per min per sq m).
          c.Apparent Opening Size (AOS), ASTM D 4751: 50 US Sieve (0.300 mm).
          d.UV Resistance, ASTM D 4355: 70 percent.
          NOTE TO SPECIFIER Delete protection sheet if specifying a HydroMax vegetated roof system. Retain for all other systems where a conventional roofing membrane configuration is used.
 
          E.Protection Sheet: Polyester membrane protection sheet made from 100 percent post-consumer recycled fibers.
          1.Basis of Design Product: Tremco, Incorporated, VR PolyMat.
          2.Physical Properties:
          a.Thickness: 60 mils (1.52 mm).
          b.Weight per ASTM D 3776: Minimum, 4.5 - 5 oz per sq yd (160 grams per sq m).
          3.Mechanical Properties:
          a.Elongation, ASTM D 4632 : 50 percent.
          b.Grab Tensile Strength, ASTM D 4632 : 100 lbf (444 N).
          c.Trapezoid Tear, ASTM D 4533 : 45 lbf (200 N).
          d.Puncture Strength, ASTM D 4833 : 65 lbf (288 N).
          e.Mullen Burst, ASTM D 3786 : 210 psi (1448 kPa).
          f.UV Resistance, ASTM D 4355 : 70 percent.
          4.Hydraulic Properties; Water Retention per ASTM F 726-06: 0.05 gal per sq ft (2.02 L per sq m).
          ** NOTE TO SPECIFIER ** Horizontal Insulation paragraph below is for projects where a protected roofing membrane configuration is used. Delete if not required.
 
          F.Horizontal Insulation: Extruded-polystyrene board insulation, ASTM C 578, of type and minimum compressive strength indicated below, with maximum flame-spread and smoke-developed indexes of 75 and 450, respectively, per ASTM E 84, unfaced; fabricated with shiplap or channel edges and with side facing Protection sheet having grooved drainage channels.
          ** NOTE TO SPECIFIER ** Delete paragraphs below based on project requirements for compressive strength. If retaining more than one type of extruded polystyrene insulation board, indicate location of each on drawings or by inserted description.
          1.Type VI, 40 psi (276 kPa).
          2.Type VII, 60 psi (414 kPa).
          3.Thickness: As indicated on Drawings.
          4.R value: 5 per in.
          5.Product shall be free of CFC's.
          ** NOTE TO SPECIFIER ** The following two paragraphs, air layer and moisture retention mat, are for VR HydraMax vegetated roofing systems. Delete both paragraphs if not required.
 
          G.Air Layer: Required air space over styrofoam insulation, consisting of crush-proof high-density polypropylene core, bonded with non-woven filter fabric.
          1.Basis of Design Product: Tremco, Incorporated, VR TremDrain 22F.
          2.Physical Properties:
          a.Thickness: 0.275 in (6.98 mm).
          3.Drainage Core Properties:
          a.Tensile Strength: 50 lbs per in (8.74 kN per m).
          b.Transmissivity, ASTM D 4716: 14.50 gal per min per ft. (0.003 sq m per sec).
          4.Fabric Properties:
          a.Grab Tensile: 90 lbs (0.40 kN).
          b.Water Flow Rate, ASTM D 4491: 150 gal per min per sq ft (6095 L per min per sq m).
          c.Apparent Opening Size (AOS), ASTM D 4751: 50 US Sieve (0.300 mm).
          d.UV Resistance, ASTM D 4355: 70 percent.
 
          H.Moisture Retention Mat: Non-woven synthetic fiber mat capable of retaining additional moisture for potential use by vegetation.
          1.Basis of Design Product: Tremco, Incorporated, VR MoistureMat.
          2.Physical Properties:
          a.Thickness: 0.395 in (10 mm).
          b.Dry Weight: 50 oz per sq yd (1,200 grams per sq m).
          c.Saturated Weight: 434 oz per sq yd (10,300 grams per sq m).
          3.Mechanical Properties:
          a.Maximum Tensile Strength: Longitudinal: 100 percent, Lateral: 140 percent.
          b.Maximum Tensile Elongation: Longitudinal: 8 kN per m, Lateral: 4 kN per m.
          4.Hydraulic Properties:
          a.Water Retention Capacity: 0.22 gal per sq ft (9.1 L per sq m).
          ** NOTE TO SPECIFIER ** The following paragraph applies to VR Lite extensive roof systems and VR Max semi-intensive and intensive roof systems. Delete if not required.
 
          I.Percolation Layer: Three-dimensional woven polypropylene mat, open weave with filter fabric laminated to top surface, consisting of a minimum of 40 percent recycled content.
          1.Basis of Design Product: Tremco Incorporated, VR AeroMat 0.40.
          2.Physical Properties:
          a.Thickness: 0.45 in (11.4 mm).
          3.Mechanical Properties:
          a.Elongation, ASTM D 4632: 50 percent.
          b.Grab Tensile Strength, ASTM D 4632: 120 lbf (534 N).
          c.Trapezoid Tear, ASTM D 4533: 50 lbf (223 N).
          d.Puncture Strength, ASTM D 6241: 70 lbf (310 N).
          e.Compressive Load, ASTM D 4716: 30,000 psf (1436 kPa).
          4.Hydraulic Properties:
          a.Water Flow Rate, ASTM D 4491: 120 gal per min per sq ft (4887 L per min per sq m).
          b.Permittivity, ASTM D 4491: .18 sec.
          ** NOTE TO SPECIFIER ** The following paragraph applies to VR Lite extensive roof systems. The two following paragraphs below apply to VR HdraMax extensive roof systems. The second and third paragraphs apply to VR HydraMax and VR Max semi-intensive or intensive roof systems. Delete paragraphs not required. Delete all three paragraphs if specifying a VR Mod vegetated roofing system.
 
          J.Drainage/Water Retention Component: High impact polystyrene, molded into a three-dimensional sheet with water retention reservoirs to form an integrated water retention and drainage system, consisting of a minimum of 75 percent recycled content.
          1.Basis of Design Product: Tremco Incorporated, VR HydraPanel 0.40.
          2.Physical Properties:
          a.Thickness: 0.44 in (11 mm).
          b.Roll Dimensions: 4 x 50 ft (1.22 x 15.24 m).
          3.Mechanical Properties:
          a.Compressive Strength, ASTM D 1621: 15,000 psf (718 kPa).
          4.Hydraulic Properties:
          a.Water Retention Capacity: 0.06 gal per sq ft (2.4 L per sq m).
          b.In-Plane Flow Rate, Gradient = 1.0, ASTM D 4716: Minimum 16 gal per min per ft (200 L per min per m).
 
          K.Drainage/Water Retention Component: High-density polypropylene, molded into a three-dimensional panel with positive-locking clips, drainage channels, and water retention reservoirs to form an integrated water retention and drainage system, consisting of 100 percent recycled content. Option to be filled with lightweight aggregate.
          1.Basis of Design Product: Tremco Incorporated, VR HydraPanel 1.25.
          2.Physical Properties:
          3.Thickness: 1.25 in (32 mm).
          a.Panel Dimensions: 2 x 2 ft (0.61 x 0.61 m).
          b.Weight, dry: 0.6 lbs per sq ft (2.93 kg per sq m).
          c.Weight, with water: 1.93 lbs per sq ft (9.41 kg per sq m).
          4.Hydraulic Properties; Water Retention Capacity: 0.165 gal per sq ft (6.73 L per sq m).
 
          L.Drainage/Water Retention Component: High-density polypropylene, molded into a three-dimensional panel with positive-locking clips, drainage channels, and water retention reservoirs to form an integrated water retention and drainage system, consisting of 100 percent recycled content. Option to be filled with lightweight aggregate.
          1.Basis of Design Product: Tremco Incorporated, VR HydraPanel 2.
          2.Physical Properties:
          a.Thickness: 2.125 in (54 mm).
          b.Panel Dimensions: 2 x 2 ft (0.61 x 0.61 m).
          c.Weight, dry: 0.86 lbs per sq ft (4.20 kg per sq m).
          d.Weight, with water: 3.79 lbs per sq ft (18.50 kg per sq m).
          3.Mechanical Properties:
          a.Compressive Strength, ASTM A 370-11: 7,782 psf (380 kPa).
          4.Hydraulic Properties:
          a.Water Retention Capacity: 0.352 gal per sq ft (14.35 L per sq m).
          ** NOTE TO SPECIFIER ** The following "Lightweight Aggregate" paragraph applies to VR HydraMax extensive and semi-intensive or intensive roofing systems when fill is required within Drainage/Water Retention Components. Delete paragraph if not required.
 
          M.Lightweight Aggregate: Expanded lightweight aggregate for use as fill material for drainage/water retention component as required.
          1.Physical Properties:
          a.Size: 5/16 to 3/8 in (8 to 9.5 mm) expanded, lightweight aggregate.
 
          N.Technical Seam Tape: Self-adhered, waterproof membrane with acrylic pressure sensitive adhesive.
          1.Basis of Design Product: Tremco Incorporated, VR TecTape 2.
          2.Physical Properties:
          a.Thickness: 9.9 mils (0.25 mm).
          3.Mechanical Properties:
          a.Nail Sealability, ASTM E 331/547 (per AAMA 711-07, Annex 1): Pass both before and after thermal cycling.
          ** NOTE TO SPECIFIER ** The following paragraph applies to all products except VR Mod roofing system. Delete if not required
 
          O.Filter Fabric: Highly permeable non-woven polypropylene filter fabric, needle punched geo-textile manufactured, used to contain soil particles within soil profile at termination edges.
          1.Basis of Design Product: Tremco Incorporated, VR Filter Fabric, VR Filter Fabric 1, VR Filter Fabric 2.
          2.Physical Properties:
          a.Thickness: 45 mils (1.143 mm).
          b.Weight: 3.2 oz per sq yd (109 g per sq m).
          3.Mechanical Properties:
          a.Grab Elongation, ASTM D 4632: 50 percent.
          b.Grab Tensile Strength, ASTM D 4632: 80 lbf (356 N).
          c.Trapezoid Tear, ASTM D 4533: 30 lbf (133 N).
          d.Puncture Strength, ASTM D 6241: 210 lbf (934 N).
          4.Endurance Properties; UV Stability, ASTM D 4355: 70 percent.
          5.Hydraulic Properties:
          a.Permittivity, ASTM D 4491: 0.22 sec.
          b.Water Flow Rate, ASTM D 4491: 160 gal per min per sq ft (6519 L per min per sq m).
          c.Apparent Opening Size (AOS), ASTM D 4751: 70 US Sieve (0.212 mm).
 
          P.Edging Restraint: Manufacturer's standard L-shaped edging with top lip, formed from extruded aluminum. Solid at growing layer to prevent rooting and plant growth through the edging. Perforated at drainage course level to allow for free drainage. Use with Manufacturer's edge connectors, edge corners, and edge leveling strips.
          1.Basis of Design: Tremco, Incorporated, VR EdgeGuard 4.
          2.Physical Properties:
          a.Thickness: 80 mils (2.03 mm).
          b.Height: 5.97 in (151.64 mm).
          c.Flange Length: 4 in (101.60 mm).
          d.Length: 8 ft (2.5 m).
          e.Lip: 3/8 in (9.525 mm).
          f.Perforations, diameter: 3/4 in (19 mm).
 
          Q.Drain Inspection Box: Manufacturer's standard drain inspection box formed from aluminum, with lockable lid and perforated at drainage course level.
          ** NOTE TP SPECIFIER ** Paragraph applies to VR HydraMax, VR Lite extensive roofing systems, and VR Mod roofing systems. Delete if not required.
          1.Basis of Design: Tremco Inc, VR DrainGuard 4.
          a.Thickness: 60 mils (1.52 mm).
          b.Dimensions: 15 x 15 in (375 x 375 mm).
          c.Height: 6 in (152 mm).
          d.Perforations, diameter: 3/4 in (19 mm).
          ** NOTE TP SPECIFIER ** Paragraph applies to VR HydraMax and VR Mex semi-intensive or intensive roofing systems. Delete if not required
          2.Basis of Design: Tremco Inc, VR DrainGuard.
          a.Thickness: 60 mils (1.52 mm).
          b.Dimensions: 15 x 15 in (375 x 375 mm).
          c.Height: 6 in (152 mm).
          d.Height: 8 in (203 mm).
          e.Height: 10 in (254 mm).
          f.Perforations, diameter: 3/4 in (19 mm).
          ** NOTE TO SPECIFIER ** The decision to use "Erosion Control Netting" is dependent on many variables, including, but not limited to, building's location, orientation, design, height, parapet wall height, vegetation selection, in areas of exceptional wind uplift or where plant establishment could be slow. Consult with a vegetated roofing specialist. Applies to all products Except VR Mod. Delete if not required or delete if specifying a VR-Mod roofing system.
 
          R.Erosion Control Netting: Polypropylene quadrangular mesh netting for establishment of seed and plugs.
          1.Basis of Design: Tremco Incorporated, VR TerraHold.
          2.Physical Properties:
          a.Thickness: 0.32 in (8 mm).
          b.Mesh Shape: Quadrangular.
          c.Unit Weight: 0.033 oz per sq ft (10 grams per sq m).
          3.Mechanical Properties:
          a.Tensile Strength, MD: 0.145 psi (1.0 kN per sq. m).
          b.Tensile Strength, TD: 0.116 psi (0.8 kN per sq. m).
          Delete the following three paragraphs if specifying anything but a VR-Mod roofing system. Retain the following three paragraphs below for areas of specific projects where full modular units cannot be installed.
 
          S.Drainage Layer: Three-dimensional high-flow retention/ drainage sheet complete with filter fabric overlay.
          1.Basis of Design: Tremco Inc, VR HydraPanel 0.40.
          2.Physical Properties:
          a.Thickness: 0.44 in (11 mm).
          b.Dimensions: 4 x 50 ft (1.22 x 15.24 m).
 
          T.Filter Fabric: Highly permeable, non-woven, needle punched geo-textile separator.
          1.Basis of Design: Tremco Inc, VR FilterFabric 1.
          2.Physical Properties:
          a.Thickness: 44 mils (1.14 mm).
          b.Dimensions per roll: 1 x 360 x 1 ft (305 x 109728 x 305 mm).
 
          U.Technical Seam Tape: High strength double coated tape.
          1.Basis of Design: Tremco Inc, VR FabricLok
          2.Physical Properties:
          a.Thickness: 7.9 mils (0.2 mm).
          b.Dimensions per roll: 2 in x 60 yd (50 x 54864 mm).
 
          2.5VEGETATED ROOF GROWING MEDIA
          ** NOTE TO PECIFIER ** the following paragraph applies to VR Mod roofing systems. Delete if not required.
 
          A.Growing Media: Vegetated roof assembly manufacturer's engineered growing media, provided with pre-vegetated modular unit.
          ** NOTE TO PECIFIER ** Applies to Extensive roofing systems. Delete paragraph if not required.
 
          B.Growing Media: Vegetated roof assembly manufacturer's lightweight, engineered growing media mixture incorporating regional inorganic and organic materials that will support succulent and desert plantings and retain and remediate storm water run-off.
          1.Basis of Design: Tremco, Incorporated, VR AeroMix Extensive.
          ** NOTE TO SPECIFIER ** Delete depth options not required.
          a.Depth: 2 in (50 mm).
          b.Depth: 3 in (75 mm).
          c.Depth: 4 in (101.6 mm)
          d.Mineral Fraction Particle Size Distribution, ASTM D 422: Percent retained:
          1)Sieve No. 3: 20 to 27.
          2)Sieve No. 8: 47 to 65.
          3)Sieve No. 16: 64 to 78.
          4)Sieve No. 30: 75 to 85.
          5)Sieve No. 50: 82 to 90.
          6)Sieve No. 100: 87 to 95.
          7)Sieve No. 200: 96 to 99.
          ** NOTE TO SPECIFIER ** Modifications to general regional mix designs are available to meet roof load requirements and microclimate requirements.
          e.Semi-Intensive and Intensive Blend Maximum Media Density, ASTM E 2399:
          1)Initial Dry-Weight Media Density: Minimum 40 lbs per cu ft (640 kg per cu m).
          2)Maximum Saturated Media Density: Maximum 80 lbs per cu ft (1280 kg per cu m).
          f.Water/Air Management, ASTM E2399:
          1)Maximum Water Holding Capacity: 30 to 65 percent.
          2)Air-Filled Porosity at Maximum Water Capacity: 10 percent, minimum.
          3)Total Pore Space: 50 percent, minimum.
          g.Water Permeability per ASTM E 2399:
          1)Hydraulic Conductivity: Minimum 15 in per hr (38 cm per hr).
          h.Chemical Properties:
          1)Growing Media pH: Value within 6.0 to 8.0.
          2)Soluble salts: 3.5 mmhos/cm, maximum.
          3)Macro- and micro- nutrients: Incorporate in initial proportions as required to support specified planting.
          i.Organic Matter Content, ASTM F 1647, Method A, organic Material as measured using the loss-on-ignition procedure: 6 to 10 percent, by volume.
          ** NOTE TPS PECIFIER ** Applies to Semi-intensive or intensive roofing systems. Delete paragraph if not required.
 
          C.Growing Media: Vegetated roof assembly manufacturer's lightweight, biologically populated, engineered growing media mixture incorporating regional inorganic and organic materials that will support the vigorous growth of a wide variety of vegetation growth and retain and remediate storm water run-off.
          The following two paragraphs apply to VR Hydramax roofing systems. The following paragraph applies to VR Max roofing systems. Delete basis of design paragraph not required.
          1.Basis of Design: Tremco, Incorporated, VR HydraMax Intensive.
          a.Depth: 4 in (101.6 mm).
          b.Depth: 6 in (152.4 mm).
          c.Depth: 8 in (203.2 mm).
          d.Semi-Intensive and Intensive Blend Maximum Media Density, ASTM E 2399:
          1)Initial Dry-Weight Media Density: 20 lbs per cu ft (320 kg per cu m) minimum.
          2)Maximum Saturated Media Density: 70 lbs per cu ft (1120 kg per cu m) maximum.
          e.Water/Air Management, ASTM E2399:
          1)Maximum Water Holding Capacity: 60 percent, minimum.
          2)Air-Filled Porosity at Maximum Water Capacity: 10 percent, minimum.
          3)Total Pore Space: 70 percent, minimum.
          f.Water Permeability, ASTM E 2399:
          1)Hydraulic Conductivity: Minimum 5 in per hr (127 mm per hr).
          g.Chemical Properties:
          1)Growing Media pH: Value within 6.0 to 7.5.
          2)Macro- and micro- nutrients: Incorporate in initial proportions as required to support specified planting.
          h.Organic Matter Content: as required to meet plant requirements.
          2.Basis of Design: Tremco, Incorporated, VR PlanterMix.
          a.Depth: As per plans and specifications.
          b.Semi-Intensive and Intensive Blend Maximum Media Density, ASTM E 2399:
          1)Initial Dry-Weight Media Density: Minimum 25 lbs per cu ft 400 kg per cu m).
          2)Maximum Saturated Media Density: Maximum 75 lbs per cu ft (1200 kg per cu m).
          c.Water/Air Management, ASTM E2399:
          1)Maximum Water Holding Capacity: 35 percent, minimum.
          2)Air-Filled Porosity at Maximum Water Capacity: 10 percent, minimum.
          3)Total Pore Space: 70 percent, minimum.
          d.Water Permeability, ASTM E 2399:
          1)Hydraulic Conductivity: Minimum 5 in per hr (127 mm per hr).
          e.Chemical Properties:
          1)Growing Media pH: Value within 6.0 to 7.5.
          2)Macro- and micro- nutrients: Incorporate in initial proportions as required to support specified planting.
          f.Organic Matter Content: as required to meet plant requirements.
 
          2.6VEGETATED ROOF PLANTING MATERIALS
 
          A.Planting Materials, General: Provide plant materials of types indicated.
          ** NOTE TO SPECIFIER Paragraph below applies to VR HydraMax and VR Lite extensive vegetated roofing systems. Delete if not required.
 
          B.Extensive Planting Materials:
          ** NOTE TO SPECIFIER ** Retain the following three paragraphs "Sedum Cuttings", "Sedum Plugs" or "Pre-Grown Sedum Mats" below as required based on project design for the vegetated roof system.
          1.Sedum Cuttings: Taken from healthy, vigorous plants, minimum of 5 varieties. Provide specimens that are freshly cut not more than three weeks prior to installation and not in flower. Cuttings are to be provided in bulk bags.
          a.Spread Rate: 25 lbs per 1000 sq ft (12 kg per 100 sq m).
          2.Sedum Plugs: Healthy, vigorous, well-rooted specimens, minimum of 5 varieties, provided in 72-plug tray with well-established rooting.
          a.Depth: 2 in (51 mm), minimum.
          b.Spacing: 9 in (229 mm) on center.
          3.Pre-Grown Sedum Mats: Three dimensional filament mat pre-grown with succulent vegetation and growing media to form a cohesive vegetated blanket.
          ** NOTE TO SPECIFIER Paragraph below applies to VR HydraMax and VR Max semi-intensive and intensive vegetated roofing systems. Delete if not required.
 
          C.Semi-Intensive and Intensive Planting Materials:
          1.Seed: A minimum of 90 percent purity, in dry form and without litter. Seed mix to be provided via injection into Blower Truck's Supplemental Injection System.
          a.Spread Rate: 5 lbs per 1000 sq ft (2.5 kg per 100 sq m).
          Specifier: Pre-established vegetation must be hardened off in the local hardiness zone of the project or a cooler hardiness zone to ensure vegetation is sufficiently prepared for the local climate. Consult with VRA specialist.
          2.Perennial Plugs: Healthy, vigorous, well-rooted specimens, provided in 50-plug tray with well-established rooting.
          a.Depth: 2 in (51 mm), minimum.
          b.Spacing: 6 in (152 mm) on center.
          3.Perennial Pots: Healthy, vigorous, well-rooted specimens, with well-established rooting. Root bound plants will not be accepted.
          a.Depth: 3.5 in (89 mm), minimum.
          b.Spacing: 12 in (305 mm) on center.
          4.Shrubs, Trees: As per plans and specifications.
          ** NOTE TO SPECIFIER ** The following two paragraphs apply to VR Mod roofing systems. Delete the paragraph not required or delete both if not specifying a VR Mod roofing system.
 
          D.Pre-Vegetated Modular Tray: Modular unit, pre-vegetated with sedum plantings, that includes growth media, and a permanent water retention and drainage layer, above which is situated an integrated drainage and filtration barrier. Also includes a built-in positive locking mechanism to attach the modules together, consisting of 100 percent recycled content. Integrated irrigation available upon request.
          1.Basis of Design Product: Tremco Incorporated, VR Mod Sedum Pre-Vegetated Modular Tray.
          2.Modular Tray:
          a.Physical Properties:
          1)Tray Dimensions: 12 x 24 x 5.75 in (305 x 610 x 146 mm).
          2)Depth of media profile: 4 in (102 mm).
 
          E.Pre-Vegetated Modular Tray: Modular unit, pre-vegetated with forbs and graminoid plantings, that includes growth media, and a permanent water retention and drainage layer, above which is situated an integrated drainage and filtration barrier. Also includes a built-in positive locking mechanism to attach the modules together, consisting of 100 percent recycled content. Integrated irrigation available upon request.
          1.Basis of Design Product: Tremco Incorporated, VR Mod Meadow Pre-Vegetated Modular Tray.
          a.Tray Dimensions: 12 x 24 x 5.75 in (305 x 610 x 146 mm).
          b.Depth of media profile: 4 in (102 mm).
 
          2.7VEGETATION-FREE ZONE MATERIALS
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs "Walkway Roof Pavers" or "Aggregate Ballast" or keep both if required.
 
          A.Walkway Roof Pavers: pre-cast concrete pavers with pedestals.
          1.Basis of Design: Armtec, Pedslab.
          2.Physical Properties:
          a.Size: 24 x 24 in (610 x 610 mm).
          b.Thickness: 2-1/4 in (57 mm).
          c.Weight: 11 lbs per sq ft (54 kg per sq m), minimum.
          d.Colors and Textures: natural color with shot blast finish.
          3.Mechanical Properties:
          a.Compressive Strength: 8000 psi (55 MPa), minimum.
          b.Absorption: 5 percent, maximum.
          c.Freeze-thaw Resistance: 1.0 percent loss in weight after 40 cycles, maximum.
          4.Paver Supports: SBR rubber, high-density polyethylene, or polyurethane paver supports. Shims, and spacer tabs for joint spacing of 1/8 to 3/16 in (3 to 5 mm).
          ** NOTE TO SPECIFIER ** Delete pedestal options not required.
          a.Pedestals: Fixed-height.
          b.Pedestals: Adjustable.
          c.Pedestals: Stackable.
          ** NOTE TO SPECIFIER ** Selection of aggregate ballast requires use of edging restraint.
 
          B.Aggregate Ballast: ASTM D 1863, No. 6 or No. 67, clean, dry, opaque, water-worn gravel, free of sharp edges.
          1.Size: ASTM D 448, Size 4, 3/4 to 1-1/2 in (19 to 38 mm).
          ** NOTE TO SPECIFIER ** Delete article if not required.
 
          2.8WATERPROOFING MEMBRANE SYSTEM
          ** NOTE TO SPECIFIER ** Delete basis of design paragraphs not required.
 
          A.Basis of Design; Cold Fluid Applied System: TREMproof 250GC waterproofing system by Tremco Incorporated, www.tremcosealants.com
          1.Cold Fluid-Applied Waterproofing: Single component, reinforced, high solids, modified aliphatic polyurethane, ASTM C 836/C 836M and coal-tar free, formulated for application to damp and green concrete.
          a.Basis of Design Product: Tremco, Incorporated, TREMproof 250GC.
          ** NOTES TO SPECIFIER ** Delete VOC content paragraph not required.
          b.VOC Content: Less than 13.4 oz per gal (100 grams per L), roller and self-leveling grades.
          c.VOC Content: Less than 21.4 oz per gal (160 grams per L), trowel detailing grade.
          d.Hardness, ASTM D 2240: 70 to 80.
          e.Low Temperature Flexibility and Crack Bridging, ASTM C 1305: Pass.
          f.Adhesion in Peel, ASTM C 794: 26 lbf per in. (4553 N per m).
          2.Accessory Materials: Recommended by Manufacturer to produce complete waterproofing system meeting performance requirements, and compatible with waterproofing material and adjacent materials.
          a.Substrate Patching Material: Manufacturer's trowel-grade filler material.
          b.Liquid Primer: Meet VOC limitations. Manufacture recommended for substrate.
          c.Elastomeric Detail Sheet: Blended thermoset reinforced with polyester woven scrim.
          1)Basis of Design Product: Tremco, Incorporated, TRA Elastomeric Sheeting.
          d.Termination Bars: Manufacturer's aluminum or stainless steel bars, with stainless steel fasteners.
          e.Termination Mastic: Manufacture's cold fluid-applied elastomeric liquid; trowel grade, with recommended glass-fiber-mesh tape.
          f.Joint Sealant per ASTM C 719: High performance, medium-modulus, low-VOC, UV-stable, non-sag polyurethane sealant for adhesion and compatibility with waterproofing and accessories.
          1)Basis of Design Product: Tremco, Incorporated, Dymonic 100.
 
          B.Basis of Design; Cold Fluid Applied System: Dual Waterproofing System by Tremco Incorporated, www.tremcosealants.com .
          1.Waterproofing Membrane:
          a.Basis of Design: Tremco, Incorporated, TREMproof 250GC.
          ** NOTES TO SPECIFIER ** Delete VOC content paragraph not required.
          b.VOC Content: Less than 13.4 oz per gal (100 grams per L), roller and self-leveling grades.
          c.VOC Content: Less than 21.4 oz per gal (160 grams per L), trowel detailing grade.
          d.Hardness, ASTM D 2240: 80 to 90.
          e.Low Temperature Flexibility and Crack Bridging, ASTM C 1305: Pass.
          f.Adhesion in Peel, ASTM C 794: 26 lbf per in. (4553 N per m).
          2.Roof substrate board.
          3.Substrate Patching Material: Manufacturer's standard trowel-grade filler material.
          4.Surface conditioner
          5.Liquid Primer: Meet VOC limitations. Recommended by manufacturer for substrate.
          6.Reinforcing: Manufacturer's spun-bonded polyester fabric reinforcing sheet.
          a.Basis of Design: Tremco, Incorporated, Reemay Fabric.
          7.Flashing Accessories:
          a.Flashing Sheet: Thermoset elastomeric consisting of neoprene rubber.
          1)Basis of Design: Tremco, Incorporated, Elastomeric Sheeting.
          2)Physical Properties; Thickness: Minimum 60 mils (1.52 mm).
          b.Flashing Detail Sheet: Blended thermoset elastomeric reinforced with polyester woven scrim.
          1)Basis of Design: Tremco, Incorporated, TRA Elastomeric Sheeting.
          c.Flashing Cover Sheet: SBS modified bituminous sheet, granular-surfaced reinforced flashing membrane.
          1)Basis of Design: Tremco, Incorporated, 2190.
          d.Composite Elastomeric Sheet: SEBS rubber faced on two sides with absorbent non-woven felt.
          1)Basis of Design: Tremco, Incorporated, DualFlex.
          e.Metal Termination Bars: Aluminum or stainless steel termination bar, with stainless steel fasteners.
          8.Adhesives and Sealants: Single-component urethane contact adhesive to adhere waterproofing with accessories.
          a.Basis of Design: Tremco, Incorporated, Dymonic 100.
          ** NOTES TO SPECIFIER ** Delete one of following two separation protection course paragraphs not required.
          9.Separation Protection Course: Mineral-reinforced asphaltic core protection board, per ASTM D 6506, Class B, pressure laminated between two asphalt-saturated fibrous liners.
          a.Basis of Design: Tremco, Incorporated, Protection Board 2550 and Protection Board 2560.
          ** NOTES TO SPECIFIER ** Delete thickness option not required.
          b.Thickness (Vertical Applications): 1/8 in (3.0 mm).
          c.Thickness (Horizontal Applications): 1/4 in (6.0 mm).
          10.Separation Protection Course: Fiberglass reinforced modified bituminous protection sheet.
          a.Basis of Design: Tremco, Incorporated, Power Ply Standard Smooth or Tremco, Incorporated, Power Ply Standard White Granular.
          b.Thickness: 0.08 in (2.0 mm) minimum.
          11.Accessory Materials: Recommended by Manufacturer to produce complete waterproofing system meeting performance requirements, and compatible with waterproofing material and adjacent materials.
          a.Substrate Patching Material: Manufacturer's trowel-grade filler material.
          1)Basis of Design Product: Tremco, Incorporated, TREMproof 250GC T.
          b.Liquid Primer: Meet VOC limitations. Manufacture recommended for substrate.
          1)Basis of Design Product: Tremco, Incorporated, Vulkem 191 QD.
          c.Elastomeric Detail Sheet: Blended thermoset reinforced with polyester woven scrim.
          1)Basis of Design Product: Tremco, Incorporated, TRA Elastomeric Sheeting.
          d.Termination Bars: Manufacturer's aluminum or stainless steel bars, with stainless steel fasteners.
          e.Joint Sealant: ASTM C 920, single-component urethane, for adhesion and compatibility with waterproofing and accessories.
          1)Basis of Design Product: Tremco, Incorporated, Dymonic 100.
 
          C.Basis of Design; Hot Fluid Applied System: TREMproof 6100 waterproofing by Tremco Incorporated, www.tremcosealants.com .
          1.Membrane: Hot, fluid-applied, rubberized asphalt waterproofing membrane, consisting of a single component, 100 percent solids, applied in two applications in conjunctions with an interlayer of reinforcing fabric. The membrane shall meet the CGSB-37.50-M89 standard and other pertinent physical properties.
          a.Basis of Design Product: Tremco, Incorporated, TREMproof 6100.
          b.Thickness: Minimum 215 mils (5.46 mm).
          c.Vapor Permeability per ASTM E96: 0.03 perms (1.7 ng per Pa x s x sq m) maximum.
          d.Combustion Characteristics per ASTM E 84: Class A, flame spread, not greater than 25; smoke developed, not greater than 450.
          2.Roof substrate board.
          3.Substrate Patching Material: Manufacturer's standard trowel-grade filler material.
          4.Surface conditioner.
          5.Liquid Primer: Meet VOC limitations. Recommended by manufacturer for substrate.
          6.Reinforcing: Manufacturer's spun-bonded polyester fabric reinforcing sheet.
          a.Basis of Design: Tremco, Incorporated, Reemay Fabric.
          7.Flashing Accessories:
          a.Flashing Sheet: Thermoset elastomeric consisting of neoprene rubber.
          1)Basis of Design: Tremco, Incorporated, Elastomeric Sheeting.
          2)Thickness: Minimum 60 mils (1.52 mm).
          b.Flashing Detail Sheet: Blended thermoset elastomeric reinforced with polyester woven scrim.
          1)Basis of Design: Tremco, Incorporated, TRA Elastomeric Sheeting.
          c.Flashing Cover Sheet: SBS modified bituminous sheet, granular-surfaced reinforced flashing membrane.
          1)Basis of Design: Tremco, Incorporated, 2190.
          d.Composite Elastomeric Sheet: SEBS rubber faced on two sides with absorbent non-woven felt.
          1)Basis of Design: Tremco, Incorporated, DualFlex.
          e.Metal Termination Bars: Aluminum or stainless steel termination bar, with stainless steel fasteners.
          8.Adhesives and Sealants: Single-component urethane contact adhesive to adhere waterproofing with accessories.
          a.Basis of Design: Tremco, Incorporated, Dymonic 100.
          ** NOTES TO SPECIFIER ** Delete one of following two separation protection course paragraphs not required.
          9.Separation Protection Course: Mineral-reinforced asphaltic core protection board, per ASTM D 6506, Class B, pressure laminated between two asphalt-saturated fibrous liners.
          a.Basis of Design: Tremco, Incorporated, Protection Board 2550 and Protection Board 2560.
          ** NOTES TO SPECIFIER ** Delete thickness option not required.
          b.Thickness (Vertical Applications): 1/8 in (3.0 mm).
          c.Thickness (Horizontal Applications): 1/4 in (6.0 mm).
          10.Separation Protection Course: Fiberglass reinforced modified bituminous protection sheet.
          a.Basis of Design: Tremco, Incorporated, Power Ply Standard Smooth or Tremco, Incorporated, Power Ply Standard White Granular.
          b.Thickness: Minimum 80 mils (2.0 mm).
          11.Accessory Materials: Recommended by Manufacturer to produce complete waterproofing system meeting performance requirements, and compatible with waterproofing material and adjacent materials.
          a.Substrate Patching Manufacturer's standard trowel-grade filler material.
          b.Liquid Primer: Meet VOC limitations. Manufacture recommended for substrate.
          c.Reinforcing Fabric: Spun-bonded polyester fabric.
          1)Basis of Design: Tremco, Incorporated, Reinforcing fabric.
          d.Elastomeric Sheet: Thermoset neoprene rubber sheet not less than 60 mils (1.52 mm).
          1)Basis of Design Product: Tremco, Incorporated, Elastomeric Sheeting.
          e.Elastomeric Detail Sheet: Blended thermoset reinforced with polyester woven scrim.
          1)Basis of Design Product: Tremco, Incorporated, TRA Elastomeric Sheeting.
          f.Composite Elastomeric Sheet: SEBS rubber faced on two sides with absorbent non-woven felt.
          1)Basis of Design Product: Tremco, Incorporated, DualFlex.
          g.Termination Bars: Manufacturer's aluminum or stainless steel bars, with stainless steel fasteners.
          h.Joint Sealant: ASTM C 920, single-component urethane, for adhesion and compatibility with waterproofing and accessories.
          1)Basis of Design Product: Tremco, Incorporated, Dymonic 100.
          ** NOTES TO SPECIFIER ** Delete the protection course paragraph not required.
          i.Protection Course: Waterproofing manufacturer's standard protection course material recommended for application.
          j.Protection Course: Provide the following:
          ** NOTES TO SPECIFIER ** Delete protection courses not required. If specifying more than one protection course, add location of protection course or indicate location of each on Drawings.
          1)Polyethylene sheet:
          a)Basis of Design Product: Tremco, Incorporated, Polyethylene Protection/Barrier Course.
          ** NOTE TO SPECIFIER ** Basic waterproofing and vapor barrier protection: 20 mils; Basic waterproofing, vapor barrier, and root barrier protection: 40 mils; Basic waterproofing, vapor and root barrier protection, and methane gas infiltration: 60 mils. Delete thickness options not required.
          1)Thickness: 20 mils (0.51 mm).
          2)Thickness: 40 mils (1.02 mm).
          3)Thickness: 60 mils (1.52 mm).
          2)Smooth-surfaced modified bitumen sheet, 80 mils (2 mm) thick.
          a)Basis of Design Product: Tremco, Incorporated, PowerPly Standard Smooth.
          3)White granular-surfaced modified bitumen sheet, 120 mils (3 mm) thick.
          a)Basis of Design Product: Tremco, Incorporated, PowerPly Standard White Granular.
          4)Woven glass-fiber fabric, synthetic resin-impregnated.
          a)Basis of Design Product: Tremco, Incorporated, 2011.
          5)Asphalt-impregnated fiberglass ply felt.
          a)Basis of Design Product: Tremco, Incorporated, 2178.
          6)Premium asphalt-impregnated and coated fiberglass ply felt.
          a)Basis of Design Product: Tremco, Incorporated, 2190.
          7)Extruded hollow-core copolymer mat.
          a)Basis of Design Product: Tremco, Incorporated, 2450.
          8)Semi-flexible, asphaltic fiberglass-faced sheet with polymer-modified asphalt core.
          a)Basis of Design Product: Tremco, Incorporated, 2550/2560.
          9)UV-resistant, lightweight polyester mat.
          a)Basis of Design Product: Tremco, Incorporated, Protection Mat.
 
          D.Basis of Design; PUMA System: TREMproof polyurethane-methacrylate (PUMA) waterproofing by Tremco Incorporated, www.tremcosealants.com .
          1.Cold Fluid-Applied Waterproofing: Polyurethane methacrylate- based (PUMA) membrane. A 2- component methacrylate-based (PUMA) liquid membrane, self-flashing and self-adhering field applied membrane. Tremco EWS (horizontal waterproofing system).
          a.Basis of Design Product: Tremco, Incorporated, Vulkem EWS BC 370 or Tremco, Incorporated, 371 Waterproofing System.
          b.VOC Content: 0 grams per L, all grades.
          c.Elongation ASTM D-638: 407.
          d.Low Temperature Flexibility and Crack Bridging, ASTM C 1305: Pass.
          e.Tensile Strength D-638 at 75 degrees F: 1680 psi.
          2.Roof substrate board.
          3.Substrate Patching Material: Manufacturer's standard trowel-grade filler material.
          4.Surface conditioner.
          5.Liquid Primer: Meet VOC limitations. Recommended by manufacturer for substrate.
          6.Reinforcing: Manufacturer's spun-bonded polyester fabric reinforcing sheet.
          a.Basis of Design: Tremco, Incorporated, Reemay Fabric.
          7.Flashing Accessories:
          a.Flashing Sheet: Thermoset elastomeric consisting of neoprene rubber.
          1)Basis of Design: Tremco, Incorporated, Elastomeric Sheeting.
          2)Thickness: Minimum 60 mils (1.52 mm).
          b.Flashing Detail Sheet: Blended thermoset elastomeric reinforced with polyester woven scrim.
          1)Basis of Design: Tremco, Incorporated, TRA Elastomeric Sheeting.
          c.Flashing Cover Sheet: SBS modified bituminous sheet, granular-surfaced reinforced flashing membrane.
          1)Basis of Design: Tremco, Incorporated, 2190.
          d.Composite Elastomeric Sheet: SEBS rubber faced on two sides with absorbent non-woven felt.
          1)Basis of Design: Tremco, Incorporated, DualFlex.
          e.Metal Termination Bars: Aluminum or stainless steel termination bar, with stainless steel fasteners.
          8.Adhesives and Sealants: Single-component urethane contact adhesive to adhere waterproofing with accessories.
          a.Basis of Design: Tremco, Incorporated, Dymonic 100.
          ** NOTES TO SPECIFIER ** Delete one of following two separation protection course paragraphs not required.
          9.Separation Protection Course: Mineral-reinforced asphaltic core protection board, per ASTM D 6506, Class B, pressure laminated between two asphalt-saturated fibrous liners.
          a.Basis of Design: Tremco, Incorporated, Protection Board 2550 and Protection Board 2560.
          ** NOTES TO SPECIFIER ** Delete thickness option not required.
          b.Thickness (Vertical Applications): 1/8 in (3.0 mm).
          c.Thickness (Horizontal Applications): 1/4 in (6.0 mm).
          10.Separation Protection Course: Fiberglass reinforced modified bituminous protection sheet.
          a.Basis of Design: Tremco, Incorporated, Power Ply Standard Smooth or Tremco, Incorporated, Power Ply Standard White Granular.
          b.Thickness: Minimum 80 mils (2.0 mm).
          11.Accessory Materials: Recommended by Manufacturer to produce complete waterproofing system meeting performance requirements, and compatible with waterproofing material and adjacent materials.
          a.Substrate Patching Material: Manufacturer's trowel-grade filler material.
          b.Primer: Tremco Vulkem Primer 70.
          c.Detailing Membrane: Tremco Vulkem 372 thixotropic polyurethane methacrylate based membrane for use in detailing and filed applied cant beads.
          d.Flashing Membrane for Vertical and Penetration Applications: Mix of Vulkem BC 370 and BC 372 at a 1 to 1 ratio
          e.Crack Filler and Patching Material: Vulkem WC 570 and silica
          f.Topcoat: TC 970 to be utilized in areas of UV exposure greater than 3 weeks
          g.Initiator: Vulkem EWS Initiator, used to catalyze all EWS resins
          h.Cleaner: Vulkem EWS Cleaner
          i.Joint Sealant per ASTM C 920: For adhesion and compatibility with waterproofing and accessories.
          1)Basis of Design Product: Tremco, Incorporated, Dymonic 100.
 
          PART 3EXECUTION
 
          3.1EXAMINATION
          ** NOTE TO SPECIFIER ** Delete paragraph applying to waterproofing if not required.
 
          A.Surface Condition for Waterproofing: Before applying waterproofing materials, examine substrate and conditions to ensure substrates are fully cured, smooth, clean, dry, and free from high spots, depressions, loose and foreign particles and other deterrents to adhesion, and conditions comply with manufacturer's written recommendations.
          1.Verify concrete and masonry surfaces are visibly dry, have cured for time period recommended by waterproofing manufacturer, are free from release agents, curing agents, laitance, and other contaminates, and have adequate profile for adhesion of product.
          2.Test for capillary moisture by plastic sheet method according to ASTM D 4263.
          3.Test for waterproofing adhesion per manufacturer's recommended method.
          4.Verify masonry joints are filled with mortar and struck flush.
          5.Verify drains have suitable flanges at membrane level flush with deck surface.
          6.Verify deck penetrations including pipes, conduits, and vents are rigidly installed and flashed and ready to receive waterproofing application.
          7.Notify Architect of unsatisfactory conditions.
 
          B.Surface Condition for Vegetated Roof: Examine surfaces and report any adverse conditions which may negatively impact appearance or performance of vegetated roof system. Ensure all unacceptable conditions are corrected before proceeding. Coordinate sequencing of waterproofing work and vegetated roofing work with work of other sections.
          1.Verify that roof insulation over membrane roofing is in place, secure, and flush along all seams.
          2.Verify that perimeter and other flashings are in place and secure along entire lengths where they will be covered by vegetated roof assembly.
 
          C.Ensure adequate provisions have been made for loading, unloading, storage, parking and access to roof site.
 
          D.Ensure all equipment is in good working order. Protect all equipment which comes into contact with roofing membrane, flashings and related work.
 
          E.Ensure adequate safety equipment has been obtained for all operations.
 
          F.Proceed with installation of vegetated roof assembly only after unsatisfactory conditions have been corrected.
 
          3.2PREPARATION
 
          A.General: Protect structures, utilities, sidewalks, pavements, and other facilities and areas from damage caused by installation.
 
          B.Protect waterproofing according to the Manufacturer's written recommendations to prevent damage and wear during examination, testing, installation, and remainder of construction period.
          ** NOTE TO SPECIFIER ** Delete the following four paragraphs if waterproofing is not addressed in this specification.
          1.Clean, prepare, and treat substrates in accordance with waterproofing manufacturer's written instructions including published details.
          a.Mask adjacent finished surfaces.
          b.Remove contaminants and film-forming coatings from substrates.
          c.Remove projections and excess materials and fill voids with substrate patching material.
          d.Prepare and treat joints and cracks in substrate per ASTM D 4258 and waterproofing manufacturer's written instructions.
          e.Close off deck drains and other deck penetrations to prevent spillage and migration of waterproofing fluids.
          2.Metal Flashings: Where metal flashings are substrate to waterproofing membrane, set the flashings in continuous bedding bead of urethane sealant; install sealant S-bead between metal laps and mechanically fasten to substrate along leading edges at every 4 in (102 mm) on center, staggered linearly, to lay flat without fishmouths.
          3.Detail Preparation: Prepare non-moving shrinkage cracks, large cracks, construction joints, expansion joints, projections and protrusions, penetrations, drains, and changes in plane in accordance with waterproofing manufacturer's written instructions and details, using accessory materials specified.
          a.Prime substrates as required.
          b.Adhere strips of elastomeric sheet to moving joints and large cracks by embedding in a layer of hot rubberized asphalt and overlay with coat of hot rubberized asphalt.
          4.Transitions to Adjacent Materials: Install elastomeric and composite reinforced flashing to form connect and seal waterproofing material to adjacent components of building waterproofing system, including, but not limited to, roofing system waterproofing, exterior fenestration systems, door framing, and other openings
          a.Seal top of through-wall flashings to waterproofing with continuous transition strips of type recommended by waterproofing manufacturer for application.
          b.Install elastomeric sheets at terminations of waterproofing membrane according to manufacturer's written instructions.
          c.Install termination bars and mechanically fasten to top of elastomeric flashing sheet at terminations and perimeter of waterproofing.
          ** NOTE TO SPECIFIER ** Delete the following paragraph if waterproofing is to remain in this specification. Retain if waterproofing is removed from this specification.
 
          C.Membrane Integrity Test (EFVM): Install as per manufacturer's written instructions.
          ** NOTE TO SPECIFIER ** Delete the following article if waterproofing is not addressed in this specification.
 
          3.3WATERPROOFING INSTALLATION
 
          A.Install waterproofing in accordance with Manufacturer's recommendations and installation instructions to achieve a continuous waterproofing according to waterproofing manufacturer's written instructions. Apply waterproofing material within manufacturer's recommended application temperature ranges.
 
          B.Membrane Integrity Test (EFVM): Install as per manufacturer's written instructions.
          ** NOTE TO SPECIFIER ** This article applies to extensive and semi-intensive or intensive vegetated roofing systems. delete article if not required.
 
          3.4VEGETATED ROOF ASSEMBLY INSTALLATION
          ** NOTE TO SPECIFIER ** Delete components listed in paragraphs below that are not specified in Part 2 of this specification.
 
          A.Install vegetated roof assembly components according to Manufacturer's written instructions and approved shop drawings.
 
          B.Continuous Growing Media Handling and Placement: Place growing media for continuous growing planted areas with equipment and methods approved by Manufacturer.
          1.Final determination of growing media composition, depth, and supplements shall be by vegetated roof assembly Manufacturer based upon approved plant types and layout, subject to approval of Architect.
 
          C.Vegetation:
          ** NOTE TO SPECIFIER ** Delete paragraphs not required.
          1.Seed Mix: In the event of a seeding application, the seed mix should be calibrated with the supplemental injection at the recommended seeding rate and applied in the top 1 in (25 mm) of growing media prior to erosion netting being installed.
          2.Perennial Plugs, Perennial Pots: Where perennial plugs or pots are used, dig a hole larger than the size of the root ball after extracting it from the pot. Lightly cover root ball, ensure plants are planted to their full root depth and gently tamp in place. If netting is used, cut holes sufficient in size to plant through.
          3.Shrubs, Trees: Where shrubs or trees are used, dig a hole larger than the size of the root ball. Lightly cover root ball, ensure plants are planted to their full root depth and gently tamp in place. Stake as required.
          ** NOTE TO SPECIFIER ** The following article applies to VR Mod roofing systems. Delete article if not required.
 
          3.5PRE-VEGETATED MODULAR SYSTEM INSTALLATION
 
          A.Install pre-vegetated modular tray system components according to Manufacturer's written instructions and approved shop drawings.
 
          3.6VEGETATION-FREE ZONE INSTALLATION
          Specifier: Where a protected membrane assembly is used, place roof pavers directly on top of insulation.
 
          A.Install roof pavers on paver supports and apply aggregate ballast, and other components according to Manufacturer's written instructions and approved shop drawings.
          1.Apply aggregate ballast uniformly not damaging roofing membrane and base flashings. Apply as insulation is installed, leaving roofing membrane insulated and ballasted at end of workday.
          2.Ballast Load: As indicated on Drawings.
          3.Install two rows of walkway roof pavers in lieu of aggregate ballast at roof perimeter, corners, and penetrations, unless otherwise indicated on Drawings.
 
          3.7FIELD QUALITY CONTROL
 
          A.Manufacturer's Field Service: Engage membrane roofing and vegetated roof assembly Manufacturer's authorized technical service representative to provide full-time inspection of vegetated roof assembly installation and prepare interim and final inspection reports.
 
          B.Correct identified deficiencies or irregularities in work that do not comply with requirements.
 
          3.8PLANT MAINTENANCE
 
          A.General: During maintenance period prior to substantial completion, and during warranty period, maintain plantings by pruning, cultivating, supplemental watering if required, weeding, fertilizing if required, removal of debris from drainage areas, adjusting and repairing devices, resetting plants to proper elevations or vertical position, and performing other operations as required to establish healthy, viable plantings.
 
          B.Replace growing media that becomes displaced or eroded because of settling or other processes.
 
          C.Maintain integrated pest management program to keep plant materials, planted areas, and growing media free of pests and pathogens or disease following recommendations of USEPA as appropriate to minimize the use of pesticides and reduce hazards.
 
          D.Use only products and methods acceptable to membrane roofing Manufacturer.
 
          3.9CLEANING AND PROTECTION
 
          A.During planting and maintenance, keep adjacent areas and construction clean and maintain work area in an orderly condition.
 
          B.Protect vegetated roof assemblies from damage due to planting operations and operations of other contractors and trades. Repair or replace damaged vegetated roof assemblies.
 
         
END OF SECTION