Wood subfloors should be suspended with a minimum of 18” of well‐ ventilated air space below.Wood subfloors must be structurally sound and in compliance with local building codes.The maximum allowable moisture content must not exceed 15%. Surface must be dry, clean, smooth, free of all dust, and structurally sound.Ī moisture test is required using a pin‐type moisture meter. Internal relative humidity rate may not exceed 90%.One additional test, for each additional 1000 ft 2. Three internal relative humidity tests should be conducted for areas up to 1000 ft 2.Internal Relative Humidity – Tests must be performed per the latest edition of ASTM F 2170. Use of gypsum‐based patching and/or leveling compounds which contain Portland or high alumina cement and meet or exceed the compressive strength of 3,000 psi are acceptable. Use cementitious patching and leveling compounds that meet or exceed Shaw’s maximum moisture level and pH requirements. Follow adhesive guidelines for moisture limits when installing using the glue down method.Concrete floors shall be flat and smooth within 1/8” in 10 feet.See current edition of the Resilient Floor Covering Institute (RFCI) publication Recommended Work Practices for Removal of Resilient Floor Coverings for detailed information and instructions on removing all resilient covering structures. Regulations may require that the material be tested to determine asbestos content and may govern the removal and disposal of material. Unless positively certain that the product is a non‐asbestos‐containing material, you must presume it contains asbestos. Smoking by individuals exposed to asbestos fibers greatly increases the risk of serious bodily harm. Inhalation of such dust is a cancer and respiratory tract hazard. These products may contain either asbestos fibers and/or crystalline silica. Avoid creating dust. WARNING! DO NOT SAND, DRY SWEEP, DRY SCRAPE, DRILL, SAW, BEAD BLAST ORMECHANICALLY CHIP OR PULVERISE EXISTING RESILIENT FLOORING, BACKING, LINING FELT, ASPHALTIC “ CUT BACK” ADHESIVES OR OTHER ADHESIVES. Adhesive removal through the use of solvents or citrus adhesive removers is not recommended. Solvent residue left in or on the subfloor may affect the new adhesive and floor covering.Once Shaw Surface Prep EXT has been properly cleaned and removed, apply one coat of Shaw MRP for additional protection. If a chemical abatement has been performed, use Shaw Surface Prep EXT to remove any residual chemicals present.If the adhesive residue is asphalt‐based (cut‐back), or any other type of adhesive is present, it must be removed by industry accepted methods such as mechanical removal or wet scraping.Substrates shall be smooth, structurally sound, permanently dry, clean and free of all foreign material such as dust, solvents, grease, oils, old adhesive residue.1000 ft2/24 hours or 90% using a rh test for loose lay installation. Moisture vapor emission rate may not exceed 8 lb.Internal Relative Humidity RH – Test must be performed per the latest edition of ASTM F 2170 and shall not exceed 90%.Calcium Chloride – Tests must be performed per the latest edition of ASTM F 1869 and shall not exceed 8lb.New and existing concrete subfloors should meet the guidelines of the latest edition of ACI 302 and ASTM F 710, "Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring" available from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428 610‐832‐9585. Test Before Starting InstallationsĪll substrates to receive moisture sensitive floor covering must be tested for moisture. Installation Guidelines For VERSA FIT™ Vinyl Plank 1.
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