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W. R. Meadows, Inc. Air Barriers
 
         
SECTION 07270
 
         
AIR BARRIERS
 
         
 
         
 
         
Copyright 2006 - 2009 ARCAT, Inc. - All rights reserved

          ** NOTE TO SPECIFIER ** W.R. Meadows, 1nc.; air barriers.

This section is based on the products of W.R. Meadows, Inc., which is located at:
300 Industrial Drive
P.O. Box 338
Hampshire, IL 60140-0338
Tel: (800) 342-5976
Fax: (847) 683-4544
E-mail: wrmil@wrmeadows.com
Web: www.wrmeadows.com


Since, 1926, W. R. MEADOWS, INC. has built a coveted reputation for product quality, company integrity and service among architects, engineers, and contractors in both the private and public sectors of the construction industry. Our broad SEALTIGHT line of high performance, premium grade construction products has been developed for use in, on, around and under concrete. SEALTIGHT Products are manufactured to comply with the exacting and rigid engineering and governmental specification standards of today's demanding construction industry. In application, contractor-proven SEALTIGHT Products are specifically designed to enhance the aesthetic qualities and functional capabilities of every square foot of concrete you place. Products are available promptly worldwide through our North American and International network of trained SEALTIGHT Distributors. Products are in stock and ready for shipment from any of our nine strategically located facilities serving the construction industry throughout the United States and Canada.
 
          PART 1GENERAL
 
          1.1SECTION INCLUDES
          ** NOTE TO SPECIFIER ** Delete, add items to list below in accordance with project requirements.
 
          A.Air barrier systems, including surface preparation.
 
          1.2RELATED SECTIONS
          ** NOTE TO SPECIFIER ** Delete, add items to list below in accordance with project requirements.
 
          A.Section 04050 - Basic Masonry Materials and Methods.
 
          B.Section 07200 - Thermal Protection.
 
          C.Section 07500 - Membrane Roofing.
 
          D.Section 07600 - Flashing and Sheet Metal.
 
          E.Section 07800 - Fire and Smoke Protection.
 
          F.Section 07900 - Joint Protection.
 
          G.Section 08050 - Common Work Results for Openings.
 
          H.Section 08500 - Windows.
 
          I.Section 09200 - Plaster and Gypsum Board.
 
          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 D 146 - Standard Test Methods for Sampling and Testing Bitumen-Saturated Felts and Fabrics Used in Roofing and Waterproofing.
          2.ASTM D 412 - Standard Test Methods for Vulcanized Rubber and Thermoplastic Rubbers and Thermoplastic Elastomers-Tension.
          3.ASTM D 570 - Standard Test Method for Water Absorption of Plastics.
          4.ASTM D 882 - Standard Test Method for Tensile Properties of Thin Plastic Sheeting.
          5.ASTM D 903 - Standard Test Method for Peel or Stripping Strength of Adhesive Bonds.
          6.ASTM D 1970 - Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection.
          7.ASTM E 96 (Method B) - Standard Test Methods for Water Vapor Transmission of Materials.
          8.ASTM E 154 - Standard Test Methods for Water Vapor Retarders Used in Contact with Earth Under Concrete Slabs, on Walls, or as Ground Cover.
          9.ASTM E 283 - Standard Test Method for Determining Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen.
          10.ASTM E 783 - Standard Test Method for Field Measurement of Air Leakage Through Installed Exterior Windows and Doors.
          11.ASTM E 1105 - Standard Test Method for Field Determination of Water Penetration of Installed Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform or Cyclic Static Air Pressure Difference.
          12.ASTM E 2178 - Standard Test Method for Air Permeance of Building Materials.
 
          B.CGSB 37-GP-56M - Membrane, Modified Bituminous, Prefabricated, and Reinforced for Roofing.
 
          1.4SUBMITTALS
 
          A.Submit under provisions of Section 01300 - Submittal Procedures.
 
          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.Application methods.
 
          C.Shop Drawings:
          1.Submit manufacturer's shop drawings showing product dimensions, rough-in dimensions, trim and accessories.
          2.Submit manufacturers drawings showing installation details and locations of each unit specified.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          D.Verification Samples: For each product specified, two samples.
 
          1.5QUALITY ASSURANCE
 
          A.Installer Qualifications:
          ** NOTE TO SPECIFIER ** Delete if not required.
          1.The air barrier contractor shall be, during the bidding period as well as for the duration of the installation, officially recognized as a Licensed Contractor by the Air Barrier Association of America (ABAA).
          a.Each worker who is installing air barriers must be either a Certified Applicator or an installer who is registered with ABAA.
          b.Each Lead Certified Applicator can supervise a maximum of five registered installers. The Certified Applicator shall be thoroughly trained and experienced in the installation of air barriers of the types being applied. Lead Certified Applicators shall perform or directly supervise all air/vapor barrier work on the project.
          ** NOTE TO SPECIFIER ** Delete if not required.
          2.Air barrier installers must be trained and certified by NECA (National Energy Conservation Association) and PSDI (Professional Skills Development Institute for energy conservation).
 
          B.Single Source Requirements: Obtain air barrier materials from a single manufacturer regularly engaged in manufacturing the product.
 
          C.Provide products which comply with all state and local regulations controlling use of volatile organic compounds (VOCs).
          ** 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.
 
          D.Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
          1.Finish areas designated by Architect.
          2.Do not proceed with remaining work until workmanship and application technique are approved by Architect.
          3.Refinish mock-up area as required to produce acceptable work.
          4.Prior to installation of air barrier, apply air barrier as follows to verify details under shop drawing submittals and to demonstrate tie-ins with adjoining construction, and other termination conditions, as well as qualities of materials and execution.
          ** NOTE TO SPECIFIER ** Delete if not required.
          5.Apply air barrier in field-constructed mock-ups of assemblies specified in Division 01.
          6.Construct typical exterior wall panel, 8 feet long by 8 feet wide, illustrating materials interface and seals, incorporating specified options including but not limited to the following: Back-up wall, cladding, window and doorframe and sill, insulation, flashing, building corner condition, junction with roof system, junction with foundation wall, and typical penetrations and gaps.
          ** NOTE TO SPECIFIER ** Delete if not required.
          7.Test mock-up in accordance project requirements. Air Barrier System in accordance with ASTM E783 and ASTM E1105 for air and water infiltration.
          8.Cooperate and coordinate with the Owner's inspection and testing agency. Do not cover any installed air barrier membrane unless it has been inspected, tested and approved.
 
          1.6PRECONSTRUCTION MEETING
 
          A.Preconstruction Meeting: Convene a meeting with subcontractors and manufacturers affected by the Work of this Section a minimum of one week prior to commencing Work of this section. Agenda shall include materials, details of construction, compatibility of materials, sequencing of construction.
 
          B.Coordinate Work with other operations and installation of finish materials to avoid damage to adjacent materials.
 
          1.7DELIVERY, STORAGE, AND HANDLING
 
          A.Deliver materials to site in manufacturer's original, unopened containers and packaging, with labels clearly identifying product name and manufacturer.
 
          B.Store materials in a clean dry area in accordance with manufacturer's instructions. Store adhesives and primers at temperatures of 40 degrees Fahrenheit (4 degrees Celsius) and above to facilitate handling. Store membrane cartons on pallets.
 
          C.Do not store at temperatures above 90 degrees Fahrenheit (32 degrees Celsius) extended periods. Keep away from sparks and flames. Completely cover when stored outside. Protect from rain.
 
          D.Protect materials during handling and application to prevent damage or contamination.
 
          1.8ENVIRONMENTAL CONDITIONS
 
          A.Maintain environmental conditions (temperature, humidity, and ventilation) within recommended limits recommended for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
 
          B.Air barriers are not intended for uses subject to abuse or permanent exposure to the elements. Protect membrane from direct sunlight until ready for use.
 
          C.Do not apply membrane when surfaces are frozen.
 
          1.9WARRANTY
 
          A.Manufacturer's Warranty: W.R. Meadows, Inc. warrants at the time and place we make shipment, our material will be of good quality and will conform to the published specifications in force on the date of acceptance of the order. See actual warranty for specific terms and conditions.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
 
          A.Acceptable Manufacturer: W. R. Meadows, Inc., which is located at: 300 Industrial Dr. P. O. Box 338 ; Hampshire, IL 60140-0338; Toll Free Tel: 800-342-5976; Tel: 847-214-2100; Fax: 847-214-2154; Email: request info; Web: www.wrmeadows.com
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
          B.Substitutions: Not permitted.
 
          C.Requests for substitutions will be considered in accordance with provisions of Section 01600.
          ** NOTE TO SPECIFIER ** Selection of the correct material should be based on a number of factors including building use, wall design, climate zone and code requirements.
 
          2.2AIR BARRIER SYSTEMS
          ** NOTE TO SPECIFIER ** Delete requirements not applicable to project. Delete if not required.
 
          A.Air-Shield Self-Adhering Air/Vapor Barrier Membrane: As manufactured by W.R. Meadows, Inc.
          1.Description: Polymeric air/vapor barrier membrane protected by release paper on cross-laminated polyethylene carrier film with exposed polymeric membrane strips on both sides protected by pull-off release strips with the following physical properties:
          2.Appearance: White carrier film and black polymeric membrane.
          3.Thickness: 40 mils (1 mm).
          4.Application Temperature: 40 degrees Fahrenheit (4 degrees Celsius).
          5.Film Tensile Strength:
          a.ASTM D 412: Modified (MD), 4,000 psi (27.6 MPa).
          b.ASTM D 882: (MD): 23.5 lb/inch (4.1 N per mm).
          6.Film Elongation:
          a.ASTM D 412: Modified (MD, percent), 400 (Typical).
          b.ASTM D 882: (MD, percent): 400 minimum.
          7.Puncture Resistance, ASTM E 154: 40 lbf (178 N) minimum.
          8.Water Vapor Permeance, Free Film, ASTM E 96: Procedure B; 0.035 perms.
          9.Water Vapor Permeance, Percent by Weight:
          a.ASTM D 1970: 0.25 Maximum.
          b.ASTM D 570: 0.1 Maximum.
          10.Air Permeability, ASTM E 283: 75 Pa (1.57 lbs/ft^2): Less than 0.004 cfm/ft^2 (less than 0.02 L/S/m^2) under a pressure differential of 0.3 in. water.
          11.Air Permeability, ASTM E 2178: 75 Pa (1.57 lbs/ft^2): Less than 0.004 cfm/ft^2 (less than 0.02 L/S/m^2) under a pressure differential of 0.3 in. water.
          12.Low Temperature Flexibility: At -22 degrees Fahrenheit (-30 degrees Celsius), CGSB 37-GP-56M; pass.
          13.Lap Peel Strength, ASTM D 903: 180 degree bend, at 39 degrees Fahrenheit (3.9 degrees Celsius); 10 lbf per inch (1.75 N per mm).
          ** NOTE TO SPECIFIER ** Delete requirements not applicable to project. Delete if not required.
 
          B.Air-Shield LM Air/Vapor Barrier Membrane: As manufactured by W.R. Meadows, Inc.
          1.Description: Single component, polymer modified, cold applied, water-base, liquid air/vapor barrier membrane with the following physical properties:
          2.Air Permeability, ASTM E 2178: Less than 0.004 cfm / ft^2 at 75 Pa (1.57 lbs / ft^2) under a pressure differential of 0.3 in. water.
          3.Air Permeability, ASTM E 283: Less than 0.004 cfm / ft^2 at 75 Pa (1.57 lbs / ft^2) under a pressure differential of 0.3 in. water.
          4.Water Vapor Permeance, ASTM E 96: 0.03 perms.
          5.Elongation, ASTM D 412: 1500 person.
          6.Tensile Strength: ASTM D 412: 15 psi.
          7.Percentage Solids: 70 percent.
          ** NOTE TO SPECIFIER ** Delete requirements not applicable to project. Low temperature application. Delete if not required.
 
          C.Air-Shield LM (All Season) Liquid Air/Vapor Barrier Membrane: As manufactured by W.R. Meadows, Inc.
          1.Description: Single component, polymer modified, cold applied liquid air/vapor barrier membrane with the following physical properties:
          2.Air Permeability, ASTM E 2178: Less than 0.004 cfm / ft^2 at 75 Pa (1.57 lbs / ft^2) under a pressure differential of 0.3 in. water.
          3.Air Permeability, ASTM E 283: Less than 0.004 cfm / ft^2 at 75 Pa (1.57 lbs / ft^2) under a pressure differential of 0.3 in. water.
          4.Water Vapor Permeance, ASTM E 96: 0.06 perms.
          5.Elongation, ASTM D 412: 1000 percent.
          6.Tensile Strength, ASTM D 412: 15 psi.
          7.Percentage Solids: 65 percent.
          ** NOTE TO SPECIFIER ** Delete requirements not applicable to project. Delete if not required.
 
          D.Air Shield LMP Vapor Permeable Air Barrier Membrane: As manufactured by W.R. Meadows, Inc.
          1.Description: Single component, polymer modified, cold applied liquid vapor permeable air barrier membrane. Air barrier membrane shall be water-based, that cures to form a tough, seamless, elastomeric membrane having the following characteristics.
          2.Air Permeability, ASTM E 2178: Less than 0.004 cfm / ft^2 at 75 Pa (1.57 lbs / ft^2) under a pressure differential of 0.3 in. water.
          3.Air Permeability, ASTM E 283: Less than 0.004 cfm / ft^2 at 75 Pa (1.57 lbs / ft^2) under a pressure differential of 0.3 in. water.
          4.Water Vapor Permeance ASTM E 96: 12 perms.
          5.Elongation ASTM D 412: 1000 percent.
          6.Flexibility at -20 degrees C, ASTM C 836: 2 inch mandrel; pass.
          7.Percentage Solids: 58 percent.
 
          2.3ACCESSORIES
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          A.Primer: Mel-Prime Water Base Primer, as manufactured by W.R. Meadows, 1nc., with the following physical properties.
          1.Flash point: 210 degrees Fahrenheit (98.9 degrees Celsius).
          2.VOC Compliant.
          3.Application Temperature: Above 40 degrees Fahrenheit (4 degrees Celsius).
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          B.Primer: Mel-Prime Solvent-Base VOC Compliant Primer, as manufactured by W.R. Meadows, Inc. with the following physical properties.
          1.Flash point: 50 degrees Fahrenheit (10 degrees Celsius).
          2.VOC Compliant.
          3.Application Temperature: Above 40 degrees Fahrenheit (4 degrees Celsius) / below 30 degrees Fahrenheit (-1 degrees Celsius): Solvent Based Primer.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          C.Flashing and Transition Membrane: Air Shield Thru-Wall Flashing as manufactured by W.R. Meadows, Inc., self adhesive polymeric air/vapor barrier membrane having a thickness of 40 mils (1 mm).
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          D.Sealer: W.R. Meadows Pointing Mastic, cold applied, single-component polymeric sealing compound with the following physical properties.
          1.Flash point: 110 degrees Fahrenheit (43.3 degrees Celsius).
          2.Application Temperature: Above 40 degrees Fahrenheit (4 degrees Celsius).
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          E.Termination Bar: W.R. Meadows Termination Bar, multi-purpose, preformed plastic strip designed to properly terminate Air-Shield membranes, with the following physical properties:
          1.Length: 10 (3048mm) foot by 1 1/8 inch (28.6mm) sections with holes every 6 inches (152mm).
          2.Color: White.
          3.Trapezoidal profile acts as a receiver lip for application of sealants.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          F.Joint Filler: Air Shield Joint Filler, pre-mixed, cold-applied, single-component joint filler.
 
          PART 3EXECUTION
 
          3.1EXAMINATION
 
          A.Examine surfaces to receive membrane.
 
          B.Do not begin installation until substrates have been properly prepared. Before installation, verify substrate is in compliance with manufacturer's instructions. Do not begin surface preparation or application until unacceptable conditions have been corrected.
 
          C.If rough opening preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
 
          D.Acceptance of Conditions: Beginning of installation constitutes acceptance of existing conditions.
 
          3.2SURFACE PREPARATION
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          A.Air-Shield Self-Adhering Air/Vapor Barrier Membrane:
          1.Protect adjacent surfaces not designated to receive air/vapor barrier system.
          2.Clean and prepare surfaces to receive air/vapor barrier in accordance with manufacturer's instructions.
          3.Do not apply air/vapor barrier to surfaces unacceptable to manufacturer.
          4.All surfaces must be clean, smooth and dry and must be clean of oil, dust and excess mortar.
          5.Strike masonry joints flush.
          6.Patch all holes and voids and smooth out any surface misalignments.
          7.Concrete surfaces must be cured for a minimum of 14 days.
          8.If curing compounds are used, they must be clear, resin based, without oil, wax, or pigments.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          B.Air-Shield LM / Air Shield LM (All Season):
          1.Protect adjacent surfaces not designated to receive air/vapor barrier.
          2.Clean and prepare surfaces to receive air/vapor barrier membrane in accordance with manufacturer's instructions.
          3.Do not apply membrane to surfaces unacceptable to manufacturer.
          4.Concrete surfaces must be clean, free of standing water, ice, snow, frost, dust, dirt, oil, curing compounds or any other foreign material that could prevent proper adhesion of the membrane.
          5.Patch all holes and voids and smooth out any surface misalignments.
          6.Cracks in masonry and concrete should be sealed with a strip of self-adhesive membrane 6 inches (150 mm) wide, centered over the crack.
          7.Ensure joints between dissimilar building materials are sealed with a strip of self-adhesive membrane 6 inches (150 mm) wide, centered over the joint.
          8.If using exterior sheathing panels, ensure all joints over 1/4 inches (6 mm) are filled with joint filler compound and a strip of self adhesive membrane 4 inches (150 mm) wide, is centered over the joint.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          C.Air Shield LMP:
          1.Protect adjacent surfaces not designated to receive air barrier.
          2.Clean and prepare surfaces to receive air barrier membrane in accordance with manufacturer's instructions.
          3.Do not apply membrane to surfaces unacceptable to manufacturer.
          4.Concrete surfaces must be clean, free of standing water, ice, snow, frost, dust, dirt, oil, curing compounds or any other foreign material that could prevent proper adhesion of the membrane.
          5.Patch all holes and voids and smooth out any surface misalignments.
          6.Patch all cracks, protrusions, small voids, offsets, details, irregularities and small deformities with cementitious patching mortar at least two hours before application.
          7.Ensure joints between dissimilar building materials are sealed with a strip of self-adhesive membrane 6 inches (150 mm) wide, centered over the joint.
          8.If using exterior sheathing panels, ensure all joints over 1/4 inches (6 mm) are taped with minimum 2 inches (51 mm) wide contractors' mesh style wall tape, or alternatively filled with joint filler compound.
 
          3.3APPLICATION
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          A.Air-Shield Self-Adhering Air/Vapor Barrier Membrane:
          1.Apply air/vapor barrier membrane system in accordance with manufacturer's instructions.
          2.Ensure accessory materials are compatible with membrane and approved by membrane manufacturer.
          3.Prime surfaces to be covered in one working day with applicable primer. Re-prime uncovered surfaces next day.
          4.Apply membrane to primed surface by removing release paper and rolling membrane firmly into place.
          5.Remove release paper only as membrane is being applied.
          6.Ensure membrane is fully adhered and remove all wrinkles and/or fish mouths.
          7.Cut membrane with a utility knife to detail around protrusions and masonry reinforcing.
          8.Overlap subsequent courses of membrane a minimum of 2 inches (51 mm).
          9.Vertical terminations of membrane should either be tied into the wall system or mechanically fastened with a termination bar.
          10.Inspect membrane before covering and repair as necessary. Cover tears and inadequate overlaps with membrane. Seal edges of patches with pointing mastic.
          11.Seal all end laps and protrusions with pointing mastic.
          12.Avoid use of products, which contain tars, solvents, pitches, polysulfide polymers, or PVC materials that may come into contact with waterproofing membrane system.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          B.Air-Shield LM:
          1.Apply air/vapor barrier membrane in accordance with manufacturer's instructions.
          2.Thoroughly mechanically mix membrane prior to application.
          3.Apply membrane by spray or roller at a minimum coverage rate of 20-25 ft^2/gal. (60 mils wet, 45 mils dry).
          4.Apply two coats (30 mils wet) as recommended in manufacturer's written instructions.
          5.Frequently inspect surface area with a wet mil gauge to ensure consistent thickness.
          6.Work material into any fluted rib forming indentations.
          7.Cured thickness of membrane should be 45 mils dry.
          8.Avoid use of products which contain tars, solvents, pitches, polysulfide polymers, or PVC materials that may come into contact with waterproofing membrane system.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          C.Air Shield LM (All Season):
          1.Apply air/vapor barrier membrane in accordance with manufacturer's instructions.
          2.Thoroughly mechanically mix membrane prior to application.
          3.Apply membrane by spray or roller at a minimum coverage rate of 17-20 ft^2/U.S. gal (1.6-1.9 m^2/3.78L) providing a thickness of 80 wet mils in two coats.
          4.Frequently inspect surface area with a wet mil gauge to ensure consistent thickness.
          5.Work material into any fluted rib forming indentations.
          6.Cured thickness of membrane should be 45 mils dry.
          7.Avoid use of products which contain tars, solvents, pitches, polysulfide polymers, or PVC materials that may come into contact with waterproofing membrane system.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          D.Air Shield LMP:
          1.Apply air barrier membrane in accordance with manufacturer's instructions.
          2.Thoroughly mechanically mix membrane prior to application.
          3.Apply membrane by spray or roller at a minimum coverage rate of 16-20 ft^2/U.S. gal (1.6-1.9 m^2/3.78L) providing a thickness of 90 wet mils in two coats.
          4.Frequently inspect surface area with a wet mil gauge to ensure consistent thickness.
          5.Work material into any fluted rib forming indentations.
          6.Cured thickness of membrane should be 45 mils dry.
          7.Allow 48 hours for full cure of the membrane.
 
          3.4PROTECTION
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          A.Air-Shield Self-Adhering Air/Vapor Barrier Membrane: Apply insulation as soon as possible to protect the air/vapor barrier membrane.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          B.Air-Shield LM:
          1.Allow material to air dry to a tack-free film prior to placement of insulation.
          2.Cover air/vapor barrier membrane as soon as possible, within 30 days, since it is not designed for permanent exposure.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          C.Air-Shield LM (All Season):
          1.Allow material to air dry for a minimum of 48 hours prior to placement of insulation.
          2.Cover air/vapor barrier membrane as soon as possible, within 30 days, since it is not designed for permanent exposure.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          D.Air Shield LMP: Cover air barrier membrane as soon as possible, within 30 days, since it is not designed for permanent exposure.
 
          3.5PROTECTION
 
          A.Protect installed products until completion of project.
 
          B.Touch-up, repair or replace damaged products before Substantial Completion.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          3.6TING
 
          A.Section 01700 - Execution Requirements: Testing, adjusting, and balancing.
 
         
END OF SECTION