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TEC® <BR>H. B. Fuller Construction Products, Inc. Moisture Vapor Emission Control
 
         
SECTION 09 05 61.13
 
         
MOISTURE VAPOR EMISSION CONTROL
 
         
 
         
Copyright 2018 - 2018 ARCAT, Inc. - All rights reserved

          ** NOTE TO SPECIFIER ** TEC®
H. B. Fuller Construction Products, Inc.; Resilient/carpet/wood flooring adhesives, tile & stone setting materials, and the surface preparation products.
This section is based on the products of TEC®
H. B. Fuller Construction Products, Inc., which is located at:
1105 S. Frontenac
Aurora, IL 60504
Toll Free Tel: 800-832-9002
Fax: 800-952-2368
Email: request info
Web: http://www.tecspecialty.com
[ Click Here ] for additional information.
TEC from H.B. Fuller Construction Products is a leading manufacturer of technologically advanced construction materials and solutions to the commercial, industrial and residential flooring industry. Headquartered in Aurora, Illinois, the company's recognized and trusted brands - TEC®, CHAPCO® , Parabond®, Fortane® and others - are available through an extensive network of distributors and dealers, as well as home improvement retailers for the flooring industry. TEC® offers a broad range of products and systems including resilient/carpet/wood flooring adhesives, tile & stone setting materials, and the surface preparation products (concrete moisture vapor barrier, self-leveling underlayments/skim coats, etc.) needed to install both soft and hard flooring.
H.B. Fuller Construction Products is a subsidiary of H.B. Fuller. For over 130 years, H.B. Fuller has been a leading global adhesives provider focusing on perfecting adhesives, sealants and other specialty chemical products to improve products and lives. With fiscal 2018 net revenue of $3 billion, H.B. Fuller's commitment to innovation brings together people, products and processes that answer and solve some of the world's biggest challenges.
We pride ourselves on providing the highest quality products that empower people to create functional, personal and beautifully constructed spaces. Browse our site to learn more about our line of products or receive expert advice from our team of qualified staff.
 
          PART 1GENERAL
 
          1.1SECTION INCLUDES
          ** NOTE TO SPECIFIER ** Delete items below not required for project.
 
          A.Moisture vapor emission control. (TEC LiquiDam)
 
          1.2RELATED SECTIONS
          ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
          A.Section 03 30 00 - Cast-in-Place Concrete.
 
          B.Section - .
 
          C.Section 09 30 00 - Tiling
 
          D.Section 09 60 00 - Flooring.
 
          E.Section 09 67 66 - Fluid-Applied Athletic Flooring.
 
          F.Section - .
 
          G.Section 09 65 13 - Resilient Base and Accessories.
 
          H.Section 09 65 13 - Resilient Base and Accessories.
 
          I.Section - .
 
          J.Section 09 68 13 - Tile Carpeting.
 
          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 E 96 Standard Test Methods for Water Vapor Transmission of Materials.
          2.ASTM D 2240, Shore D, Durometer Hardness.
          3.ASTM D 7234 Tensile Bond Strength.
          4.ASTM F 710 - Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring.
          5.ASTM F 1869 Standard Test for measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride.
          6.ASTM F 2170 - Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes.
          7.ASTM F 3010 - Standard practice for Two-Component Resin Based Membrane-Forming Moisture Mitigation System for use Under Resilient Floor Covering
 
          1.4SYSTEM DESCRIPTION:
 
          A.Provide a system of moisture mitigation, surface preparation products, and adhesives from a single source manufacturer necessary to achieve proper installation of specified flooring material that will provide the Owner with a limited system warranty for a period of no less than 25 years.
 
          1.5SUBMITTALS
 
          A.Submit under provisions of Section 01 30 00 - Administrative Requirements.
 
          B.Product Data:
          1.Manufacturer's data sheets on each product to be used.
          2.Preparation instructions and recommendations.
          3.Storage and handling requirements and recommendations.
          4.Typical installation methods.
          5.System Warranty including moisture vapor barrier, self leveling underlayments and flooring adhesive from a single manufacturer.
 
          C.Sustainability Submittals: Refer to Division 01810 Facility Performance Requirements for additional requirements:
          1.Third party certificate of low VOC emissions compliant with performance requirements for hydraulic cement underlayment and concrete moisture vapor barrier: CDPH standard method V1.2 or specification 01350
          2.Submit certificate of CRI Green Label Plus for flooring adhesive.
          3.Submit contractor certification of compliance with installation requirements of products to maintain sustainability performance levels.
 
          D.Verification Samples: For each finish product specified, two samples, minimum size 6 inches (150 mm) square representing actual product, color, and patterns.
 
          E.Shop Drawings: Include details of materials, construction and finish. Include relationship with adjacent construction.
 
          1.6QUALITY ASSURANCE
 
          A.Manufacturer Qualifications: Company specializing in manufacturing products specified in this section with a minimum five years documented experience.
 
          B.Installer Qualifications: Company specializing in performing Work of this section with minimum two years documented experience with projects of similar scope and complexity.
 
          C.Source Limitations: Provide each type of product from a single manufacturing source to ensure uniformity.
          ** NOTE TO SPECIFIER ** Include mock-up if the project size or quality warrant the expense. The following is one example of how a mock-up on might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project. Delete if not required.
 
          D.Mock-Up: Construct a mock-up with actual materials in sufficient time for Architect's review and to not delay construction progress. Locate mock-up as acceptable to Architect and provide temporary foundations and support.
          1.Intent of mock-up is to demonstrate quality of workmanship and visual appearance.
          2.If mock-up is not acceptable, rebuild mock-up until satisfactory results are achieved.
          3.Retain mock-up during construction as a standard for comparison with completed work.
          4.Do not alter or remove mock-up until work is completed or removal is authorized.
 
          1.7PRE-INSTALLATION CONFERENCE
 
          A.Convene a conference approximately two weeks before scheduled commencement of the Work. Attendees shall include Architect, Contractor and trades involved. Agenda shall include schedule, responsibilities, critical path items and approvals.
 
          B.Discuss contract document requirements, moisture tests, manufacturer recommendations, installer's recommendations, scheduling, and protection of work from damage by other trades.
 
          C.Attendance required by: Contractor, Floor Installer, Manufacturer's Representative, Independent testing agency, Concrete Subcontractor, Ready Mix supplier.
 
          D.Objective of conference is:
          1.Review methods and procedures.
          2.Tour job site representative areas to inspect and discuss condition of substrate.
          3.Review concrete finishing requirements.
          4.Review and finalize construction schedule.
          5.Review required inspections, testing, certifications, material usage procedures.
          6.Review environmental restrictions and forecasts
          7.Record content of conference including attendance and topics.
 
          E.Furnish record of pre-installation conference to all parties who are affected by MVE control systems work.
 
          1.8DELIVERY, STORAGE, AND HANDLING
 
          A.Store products in manufacturer's unopened containers until ready for installation.
 
          B.Store products in a cool dry place out of direct sunlight.
 
          C.Maximum shelf life is 1 year from date of manufacture in unopened containers.
 
          D.Protect from damage due to weather, excessive temperature, and construction operations.
 
          1.9PROJECT CONDITIONS
 
          A.For interior application only.
 
          B.Do not bridge existing expansion joints.
 
          C.Do not install in temperatures below 50 degrees F.
 
          D.Not for use in conditions of hydrostatic pressure or excessive moisture (>100 percent Relative Humidity) per ASTM F 2170, or 25 lbs./1000 sq. ft. / 24 hours per ASTM F 1869.
 
          E.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.
 
          1.10SEQUENCING
 
          A.Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.
 
          1.11WARRANTY
          ** NOTE TO SPECIFIER ** Delete one of the following two warranties; coordinate with requirements of Division 1 section.
 
          A.10 Year Limited Product Warranty: Product shall be free from manufacturing defects and will not break down or deteriorate under normal use for 10 years.
 
          B.25 Year System Limited Warranty is available when using manufacturer's concrete moisture vapor barrier system in conjunction with specific surface preparation products and adhesives as identified on published warranty at the time of issuance. This warranty warrants to the Owner of the premises in which the product is applied, that the products, as indicated on published warranty, when installed as a complete system, will 1) reduce the moisture vapor emissions of treated concrete substrate from a maximum of 25 pounds per 1000 sq. ft./24 hours as determined by the Calcium Chloride Test Method ASTM F1869 (or 100 percent RH using the Relative Humidity Method ASTM F2170-09) to no more than 3 pounds per 1000 sq. ft./24 hours, and 2) if moisture vapor emissions comply with above, and the products are used as a complete System, the System a) will not fail due to a manufacturing defect, b) will prevent flooring damage and bond failure caused by vapor emissions from the concrete substrate.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
 
          A.Acceptable Manufacturer: TEC® ; H. B. Fuller Construction Products, Inc., which is located at: 1105 S. Frontenac; Aurora, IL 60504; Toll Free Tel: 800-832-9002; Fax: 800-952-2368; Email: request info; Web: http://www.tecspecialty.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 01 60 00 - Product Requirements.
 
          2.2PERFORMANCE REQUIREMENTS
 
          A.The moisture vapor barrier shall be installed over new or moist concrete (as little as 48 hours old) without the need to mechanically prepare on strong, clean surfaces. Weak or contaminated surfaces shall be mechanically prepared by a method such as shot blasting. Mechanically prepared surfaces must have a concrete surface profile of ICRI CSP 2-3 (similar to a light broom finish).
 
          B.Maximum allowable moisture emission rate of concrete at the time of testing: 25 lbs. per 1,000 ft2 per 24 hours when measured in accordance with ASTM F 1869, or an RH value of 100 percent or less when measured in accordance with ASTM F 2170.
 
          C.Underlayment shall be installed in accordance with the manufacturer's recommended specifications for use and installation.
 
          D.Moisture vapor barrier shall reduce the vapor emissions of the new or moist concrete to less than 3 lbs. per 1000 sq ft per 24 hours MVER and the underlayment shall be suitable to receive all types of floor coverings when allowed to properly cure in accordance with manufacturer recommendations.
 
          E.Moisture vapor barrier shall accept scheduled flooring materials installation in 4 hours.
 
          F.Surface Preparation Products: MAS Certified Green compliant with the VOC-emission limits and testing requirements specified in the California Department of Public Health Standard Method for the testing and evaluation of VOC emissions from indoor sources using environmental chambers, version 1.2 (also known as CDPH standard method V1.2 or specification 01350)" for classroom & private office scenario for hydraulic cast underlayment, skim coat, and concrete moisture vapor barrier used to verify Low VOC product information.
 
          G.Flooring Adhesives: CRI Green Label Plus Certified complying with California DPH Section 01 35 00 - Special Procedures Versions 1.1 and 1.2 Private Office Scenario.
 
          H.Contractor's certification of LEED Compliance: Contractor's certification verifying the installation of specified LEED Compliant products.
 
          2.3MOISTURE MITIGATION VAPOR BARRIER
 
          A.Basis of Design: TEC LiquiDam as manufactured by TEC / H. B. Fuller Construction Products.
          1.Maximum allowable moisture emission rate of concrete: 25 lbs. per 1,000 ft2 per 24 hours when measured in accordance with ASTM F 1869, or an RH value of 100 percent or less when measured in accordance with ASTM F 2170.
          2.Permeance shall be less than 0.10 perms per ASTM E96
          3.Hardness: 60 when tested in conformance with ASTM D 2240.
          4.Floor covering installation: 4 hours (dependent on substrate conditions, porosity and temperature.
          5.Two-part; 100 percent solids epoxy.
          6.VOC: 0 g/L (Part A and Part B mixed).
          ** NOTE TO SPECIFIER ** TEC® WoodStrong™ Premium Urethane Wood Flooring Adhesive, TEC® Releasable Pressure Sensitive Adhesive or TEC® Clear Thin Spread Adhesive may be applied directly to LiquiDam™ Moisture Vapor Barrier if concrete surface is sufficiently smooth and level. If the substrate is not smooth and level, please treat with appropriate TEC® surface preparation products. Floor coverings will require an application of a self-leveling underlayment or a trowel applied skim coat, which shall be TEC® PerfectFinish™ (no primer required) or a TEC® Level Set 300 self-leveling underlayment (TEC® Multipurpose Primer required), suitable for the intended use.
 
          2.4AUXILIARY SYSTEM COMPONENTS
          ** NOTE TO SPECIFIER ** An acrylic latex based primer used with TEC brand self leveling underlayments. Delete components not required.
 
          A.Primer: TEC Multipurpose Primer. For difficult to bond to substrates. Refer to data sheet for substrate requirements.
          1.Primer shall be solvent free; VOC less than 10 g/L.
          ** NOTE TO SPECIFIER ** A high performance skim coat for rough, irregular surfaces. Delete if not required.
 
          B.Skim Coat Patch: TEC PerfectFinish™ Skim Coat Patch:
          1.Compressive Strength shall be no less than 3,600 psi at 28 days (Air curing samples) when tested in conformance with ASTM C 109 Modified.
          2.Patching depth shall be from feather edge to 1/2 inch..
          3.Fast setting - install flooring in as soon as 15-60 minutes.
          ** NOTE TO SPECIFIER ** NEW! TEC® Feather Edge Skim Coat is a high quality, cement-based compound designed to skim coat, smooth and level irregularities from featheredge up to 1/2" (12 mm). Rapidly sets to install most floor coverings in as little as 15-20 minutes, with exceptional performance. Delete if not required.
 
          C.Feather Edge Skim Coat: TEC Feather Edge Skim Coat
          1.Compressive Strength shall be no less than 3,600 psi at 28 days (Air curing samples) when tested in conformance with ASTM C 109 Modified.
          2.Patching depth shall be from feather edge to 1/2 inch.
          3.Fast setting - install flooring in as soon as 15-20 minutes
          ** NOTE TO SPECIFIER ** Designed for deep fills, ramping and leveling of concrete and plywood sub floors. Delete if not required.
 
          D.Underlayment: TEC Fast-Set Deep Patch Underlayment:
          1.Compressive Strength shall be no less than 4,200 psi at 28 days (Air curing samples) when tested in conformance with ASTM C 109 Modified.
          2.Flexural Strength shall be no less than 1,100 psi at 28 days when tested in conformance with ASTM C 580.
          3.Walkable hardness in 60 minutes, apply most floor coverings in 1 to 1-1/2 hours.
          4.Application depth shall be from feather edge to 1-1/2 inches per application without the use of aggregate
          5.VOC shall be 0 g/L.
          ** NOTE TO SPECIFIER ** NEW! Ideal for fast track applications, Level Set® 300 is a high-performance, calcium aluminate-based, fiber-reinforced, self-leveling underlayment that provides a flat, extremely smooth, and durable surface for finished flooring installation. Delete if not required.
 
          E.Underlayment: TEC Level Set® 300 Self-Leveling Underlayment
          1.Compressive Strength shall be no less than 5,500 psi at 28 days (Air curing samples) when tested in conformance with ASTM C 109 Modified.
          2.Flexural Strength shall be no less than 1,100 psi at 28 days when tested in conformance with ASTM C 580.
          3.Walkable hardness in 2-4 hours.
          4.Featheredge up to 1-1/2 inch (up to 2 inches for Level Set 300) depth in a single pour, or up to 5 inches (12 cm) with proper aggregate.
          5.VOC shall be 0 g/L
          ** NOTE TO SPECIFIER ** Part of 25 Year Moisture Control System Limited Warranty. Delete if not required Delete if not required.
 
          F.Adhesive: TEC TrowelFast Vinyl Flooring Adhesive.
          1.Trowel Applied, fast-drying; accepts flooring as soon as 10-20 minutes.
          2.Concrete moisture resistant up to 95 percent RH / 10 lbs. MVER on newly laid concrete with declining values.
          3.LEED Compliant and CRI Green Label Plus Certified.
          4.VOC less than1 g/L.
          ** NOTE TO SPECIFIER ** Part of 25 Year Moisture Control System Limited Warranty. Delete if not required.
 
          G.Adhesive: TECRollFast as manufactured by H.B. Fuller Construction Products.
          1.Roller Applied, fast-drying; accepts flooring as soon as 10-20 minutes.
          2.Moisture resistant up to 95 percent RH / 10 lbs. MVER on newly laid concrete; declining values.
          3.LEED Compliant and CRI Green Label Plus Certified.
          4.VOC less than1 g/L.
          ** NOTE TO SPECIFIER ** Part of 25 Year Moisture Control System Limited Warranty. Delete if not required.
 
          H.Adhesive: TEC Flexera as manufactured by H.B. Fuller Construction Products.
          1.Trowel Applied; Moisture resistant up to 95% RH / 10 lbs. MVER on newly laid concrete; declining values.
          2.LEED Compliant and CRI Green Label Plus Certified.
          3.25 Year Surface Preparation and Flooring System Limited Warranty.
 
          PART 3EXECUTION
 
          3.1EXAMINATION
 
          A.Test moisture content of substrates:
          1.Before applying LiquiDam, Moisture Vapor Emission Rate (MVER), using "Anhydrous Calcium Chloride" testing per ASTM F1869, must be obtained to determine the Moisture Vapor Emission Rate, or a relative humidity of the concrete must be obtained using ASTM F2170.
          2.Notify the Architect and General Contractor in writing of any unsatisfactory conditions.
 
          3.2INSTALLATION
 
          A.Clean surfaces thoroughly prior to installation.
 
          B.Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
          1.All surfaces shall be structurally sound and free from oil, grease, dust, loose or peeling paint, sealers, floor finishes, curing compounds or any contaminant that would prevent a good bond.
          2.Minimum tensile bond strength of 150 psi (1 MPa) is required, when tested per ASTM D 7234 (tensile bond strength).
          3.Substrate temperature shall be a minimum of 50 degrees F (10 degrees C) during application.
          4.Air temperature shall be maintained between 50 to 90 degrees F (10 degrees to 32 degrees C).
 
          C.Application to concrete shall require evaluation and preparation to address any conditions that would prevent a good bond. Additional evaluation, testing and/or preparation shall be required to ensure the manufacturer's surface preparation requirements are met. It is necessary to evaluate all four conditions. Check for Condition 1 on the entire concrete surface. Conditions 2 through 4 shall be checked for at least once per every 50 ft2 (4.6 m2) on small applications (1000 ft2 (93 m2) or less) and once every 100 ft2 (9 m2) on large applications (greater than 1000 ft2 (93 m2)). Re-check to confirm the method success.
          1.CONDITION 1: Surface coatings and/or contamination such as gypsum plaster, joint compound, paint and adhesive. Evaluation: Look at the surface and note the type and location of the surface contamination. Preparation: First scrape off any lumps and loose material. Then use an appropriate cleaning method for the type of coating or contamination.
          a.For gypsum plaster and joint compound Scrub with warm water and detergent to remove any remaining material. Thoroughly rinse off any residue and allow concrete to dry prior to application of any materials.
          b.For paint Chemical strippers shall not be used. Paint not easily scraped off shall be mechanically removed.
          c.For adhesive Scrape off all the adhesive from the surface first, then remove the layer of adhesive-contaminated concrete by mechanical means.
          2.CONDITION 2: Weak top layer (called laitance) or damaged concrete such as spalling, scaling, delaminating or crumbling. Evaluation: First scrape the surface with a knife blade. If this produces a fine powder, then laitance is present. Then use a hammer or other heavy object to sound out weak or hollow areas. Note the areas that are weak or damaged. Preparation: Weak or damaged concrete shall be mechanically removed. Do NOT acid wash or etch concrete.
          3.CONDITION 3: Curing Compounds/Sealers
          a.Broom finish or Steel troweled finish (non-glossy) Evaluation: Apply water droplets onto the surface. If the droplets are not absorbed within 60 seconds the surface was treated with a curing compound/ sealer or is contaminated. Preparation: The sealed or contaminated layer of concrete shall be removed by mechanical means.
          b.Burnished finish (glossy surface) Evaluation: For glossy burnished concrete surfaces, apply test areas to confirm bond strength of at least 150 psi when tested per ASTM D7234 (tensile bond test). Preparation: Glossy burnished concrete surfaces that do not provide bond strength of at least 150 psi shall be removed by mechanical means.
          4.CONDITION 4: Final Surface Preparation - removal of dirt and dust. Evaluation: Wipe the surface with a clean dark cloth. If powder is visible on the cloth the surface is not clean. Note the areas that were not clean enough. Preparation: Use a two-step method to remove surface dirt and dust. First use a dry clean broom and sweep the entire surface. Do not use oil or wax based sweeping compounds. The second step shall consist of one of the following:
          a.Vacuuming use a heavy-duty industrial type vacuum to provide a dust-free surface. It may also be necessary to follow vacuuming with a damp sponge wipe to remove residual surface dust.
          b.Water cleaning use a stream of potable water with sufficient pressure to remove dust and dirt. When necessary, also scrub with a stiff bristled brush. Remove all wash water and allow concrete to thoroughly dry.
          c.Detergent water cleaning using a stiff bristled brush or broom, scrub the entire concrete surface with a cleaning product intended for concrete or a solution of at least 4 ounces (113 g) of trisodium phosphate per gallon (3.78 L) of warm water. Before the surface dries, thoroughly flush the concrete with clean potable water to remove all wash water and residue. Allow concrete to thoroughly dry prior to application of any products.
 
          3.3MIXING
 
          A.Mix materials in accordance with manufacturer's instructions.
          1.Pour entire container of Part B Curing Agent into the pail containing Part A.
          2.Mix thoroughly for 3 minutes using a low speed (<=150 rpm) mixer. Do not over mix and avoid using high speed mixing to prevent entraining air. (NOTE: Mixing initiates an exothermic reaction. Blended material left in the mixing container will generate heat and shorten working time.)
 
          3.4EXISTING CRACKS
 
          A.For Static Cracks, Cuts or Joints less than 1 mm wide (with no movement): Remove any dirt, debris or existing sealant from cracks and joints. Mix moisture mitigation vapor barrier per instructions. Treat all static joints with moisture mitigation vapor barrier by applying material into the joint with a paintbrush to completely coat the walls of the cavity.
 
          B.For Static Cracks / Control Joints 1 mm-3 mm wide (with no movement): Remove any dirt, debris or existing sealant from cracks and joints. Mix moisture mitigation vapor barrier per instructions. Blend at a 1:1 ratio with fine silica sand. Immediately pour into control joints and cracks, level with concrete surface.
 
          C.For Expansion Joints/Dynamic Cracks (with movement): Remove any dirt, debris or existing sealant from cracks and joints. Treat all dynamic joints with moisture mitigation vapor barrier by applying a layer into the joint with a paintbrush to completely coat the walls of the cavity. Once cured, fill the joint with sand or backer rod while leaving the top of joint open for proper treatment with sealant.
          ** NOTE TO SPECIFIER ** There is a major difference between the proper application of flooring over static vs. dynamic joints, as well as, variations based upon the type of flooring being installed. Please follow appropriate industry standards, as well as flooring manufacturer's recommendation for treatment of joints.
 
          3.5APPLICATION
 
          A.Layout the substrate area into 150 ft2 (13.9 m2) "grids" for each 1 gallon (3.78 L) blended kit.
 
          B.Immediately after mixing, pour the blended gallon container of moisture mitigation vapor barrier, across the grid area while spreading with a squeegee or 1/16 inch (1.6 mm) square-notched trowel allowing the moisture mitigation vapor barrier to saturate the surface.
 
          C.Back roll surface with a 3/16 inch (4.8 mm) nap foam roller to evenly distribute the product. First saturate the roller and then work at a smooth even pace.
 
          D.Do not exceed 180 ft2 per gallon.
          ** NOTE TO SPECIFIER ** Curing and Surface Preparation: Most floor coverings and adhesives require the application of a TEC® cementitious underlayment over LiquiDam™. LiquiDam™ cures to a tacky film with no transfer to the touch in as little as 4-5 hours. LiquiDam™ surface must be primed with undiluted TEC® Multipurpose Primer prior to installation of cementitious underlayment. To maximize installation efficiency primer can be applied in as little as 4-5 hours after installation of LiquiDam™. Allow primer to dry and apply appropriate TEC® cementitious underlayment at a minimum thickness of 1/8 inch (3 mm).
 
          3.6FIELD QUALITY CONTROL
          ** NOTE TO SPECIFIER ** Include if manufacturer provides field quality control with onsite personnel for instruction or supervision of product installation, application, erection or construction. Delete if not required.
 
          A.Manufacturer's Services: Coordinate manufacturer's services in accordance with appropriate sections in Division 01.
 
          3.7CLEANING AND PROTECTION
 
          A.Clean products in accordance with the manufacturer's recommendations.
 
          B.Touch-up, repair or replace damaged products before Substantial Completion.
 
         
END OF SECTION