USG Corporate Headquarters Levelrock Floor Underlayment Finished Floor Installation Guidelines ®
Table of Contents Levelrock Floor Underlayment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Substrate Requirements for Levelrock Floor Underlayment. . . . . . . . . . . . . . . 3 Surface Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Underlayment Surface Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Substrate Requirements for Levelrock Floor Underlayment Levelrock floor underlayment must be applied to a relatively dry substrate. In the case of new wood subfloors, any moisture from the subfloor has typically dissipated into the environment. However, where the underlayment is poured over structural concrete or concrete planks, the job scheduling may result in the subfloors being left open to the weather and will absorb moisture from rain and/or snow.
Surface Requirements Other situations that affect drying times are: leaks in roofs; lack of a permanent roof, windows or doors; and windows left open during storms which result in flooding of the floor—all of which have a potential negative effect on drying. responsible for ensuring that they are met.
Underlayment Surface Preparation Using Levelrock Floor Underlayment All Purpose Sealer Levelrock™ floor underlayment all purpose sealer can be applied to most Levelrock floor underlayments prior to the application of floor-covering adhesives to enhance the bond between the underlayment and the adhesive. Levelrock all purpose sealer can be applied by the floor covering manufacturer or a USG Levelrock authorized applicator.
Underlayment Surface Preparation Instructions for Finished Floor Goods Contractor If the surface of the underlayment has a light red color, this is an indication that the surface has already been treated by the Levelrock applicator. No further sealing of the surface is recommended. However, in areas subject to extended trade traffic, the sealer may have worn off. Place a drop of water onto suspect areas. Rapid absorption of water indicates a need for re-coating in that area.
General Recommendations In all cases, follow floor-covering manufacturer’s installation recommendations to maintain floor-covering manufacturer’s warranties. Before applying any of the USG floor treatments and the floor-covering, all surfaces must be clean and free of oil, paint, chemicals, wax, grease, dust, dirt and other construction debris.
Installation Laminated Hardwood and Engineered Wood Flooring Follow the Surface Requirements instructions to prepare the underlayment. Underlayment dryness is critical for wood floor coverings. Make sure all critical areas are tested for dryness using the Protimeter moisture meter. Follow wood floor-covering manufacturer’s recommendations for maximum moisture levels. Mechanical Attachment Follow and adhere to floor goods manufacturer’s general and installation recommendations.
Layered Warranties The following manufacturers provide a warranty on their products when used as specified in conjunction with Levelrock products. For further details, please contact the product manufacturer or your Levelrock /A lcorp Network representative. Merkrete (merkrete.com), a division of Parex USA Inc., will provide a 15-year warranty over all Levelrock materials meeting TCNA requirements as tile/stone underlayments.
References Levelrock floor underlayments are compatible with a variety of ancillary products that complete the installation of finished floors. The following pages include references for crack isolation and waterproof membranes, thin-sets, adhesives and floor coverings. For surface treatment recommendations, see pages 14 – 15. For more information about Levelrock floor underlayments, visit levelrock.com or contact your Levelrock /A lcorp Network representative at 817 329.1808.
Crack Isolation and Waterproof Membrane and Thin-Set Manufacturers Reference Manufacturer Product Amorim Cork Composites AcoustiCORK® R12 crack suppression membrane Phone Number/Web Site Bonsal American ProSpec® Flex-Guard crack isolation system, ProSpec® Speed-Flex crack isolation system Bostik, Inc. Hydroment® Ultra-Set Advanced waterproofing/crack/sound isolation membrane and setting adhesive (800) 7BOSTIK (726-7845) bostik-us.
Adhesives Approved for Use Over Levelrock Floor Underlayments Floor Covering Levelrock Floor Underlayment Adhesive* Action back carpet CSD® E arly E xposure™ APAC™ 440 Carpet 2500 Mapei® Ultrabond ECO® 185 Mannington® V-82 Commercial vinyl 3500 Domco commercial vinyl 4500 NXG DuraStone 2500 Congoleum® DS 100 DuraSet adhesive Laminated wood plank 2500 Bruce® Connection PR, Bruce® Equalizer Non vinyl-backed modular carpet tiles 3500/CSD E arly E xposure XL Brands Dyna-Mix NPB pressure sen
Additional Floor Covering and Adhesive Manufacturers Reference Manufacturer Floor Covering Adhesive Product Bostik, Inc.
General Surface Treatment Recommendations For Levelrock Floor Underlayment To Receive Floor Coverings Building Type Floor Covering Adhesive Levelrock Floor Underlayment Recommended Surface Treatment For Levelrock Floor Underlayment RESIDENTIAL / WOOD FRAME / MULTI-FAMILY CARPET WBA 2500, RH APS/FTP COMMERCIAL / 2- & 3-STORY WOOD FRAME / HOTEL, MOTEL, ASSISTED LIVING RESIDENTIAL / CORRUGATED STEEL DECK LIGHT-GAUGE STEEL FRAMING / CONDO FELT-BACKED VINYL WBA 2500, RH APS/FTP VINYL COMPOSITION
General Surface Treatment Recommendations For Levelrock Floor Underlayment To Receive Floor Coverings Building Type Floor Covering Adhesive Levelrock Floor Underlayment Recommended Surface Treatment For Levelrock Floor Underlayment RESIDENTIAL / CONCRETE DECK OR CONCRETE PLANK / HIGH-RISE CONDO CARPET WBA 2500, RH, CSD E arly E xposure* APS/FTP FELT-BACKED VINYL WBA 2500, RH, CSD E arly E xposure* APS/FTP VINYL COMPOSITION TILE WBA 2500, RH, CSD E arly E xposure* APS/FTP LINOLEUM WBA 25
Technical Service 800 USG.4YOU Web Sites levelrock.com usgdesignstudio.com Literature 888 874.2450 Samples 817 329.1808 Customer Service 800 621.9523 Manufactured by United States Gypsum Company 550 West Adams Street Chicago, IL 60661 800 USG.4YOU (874.4968) levelrock.com usgdesignstudio.com Product Information See usg.com for the most up-to-date product information. LEED Information For the most up-to-date information on LEED rating systems, project certification and the U.S.
