Installation Guide

MOHAWK TECHNICAL SERVICES – HARD SURFACE | [e-mail] | 888.387.9881 1603_2020 | ES | 09/2020 | 5 of 12
Concrete Suboor
Lightweight Concrete: Engineered wood ooring is not recommended for glue down installation over lightweight concrete suboors. To test for lightweight or
acoustical concrete, scrape a coin or key across the surface of the suboor. If the surface powders easily or has a dry density of l00 pounds or less per cubic foot,
the engineered ooring should not be installed using the glue down method. Product can be installed using oating installation method.
Other Substrates
Existing perimeter glued resilient vinyl and rubber tiles are unacceptable underlayment and must be removed. Existing terrazzo, vinyl, resilient tile, cork and
linoleum or hard surfaces that are dry, structurally sound and level are suitable as underlayment. As above, the surface must be sound, tight and free of paint, oil,
existing adhesives, wax, grease and dirt. Terrazzo and ceramic tile must be scuffed to assure adhesion.
WARNING: Do not sand existing resilient tile, sheet ooring, backing, or felt linings. These products may contain asbestos bers that are not readily identiable.
Inhalation of asbestos dust can cause asbestosis or other serious bodily harm. Check with local, state and federal laws for handling hazardous material before
attempting the removal of these oors.
Direct Glue Installation: Make sure existing oor covering materials are well bonded to the suboor or underlayment with full spread adhesive and no more
than two layers thick, not to exceed 3/16" (5 mm). With approved wood or wood composite suboors, if vinyl or tiles are loose, broken or in poor condition, install
a 3/8" (9.5 mm) approved suboor panel directly over the ooring materials. Clean the ooring materials as necessary to remove waxes, sealers or cleaning
residues to allow a good adhesive bond. Cork oor sealers and surface treatments must be removed. Always perform a bond test prior to beginning direct
glue installation.
Before You Start
Adhesive Selection: Acceptable suboor moisture condition requirements will vary dependent upon your selection of M1000, M808 or M92X adhesive.
Adhesive moisture requirements are not interchangeable between adhesives and vary dependent upon the suboor type and conditions. The suboor moisture
requirement and test for each adhesive is outlined in the following:
M1000 ULTRATACK ADVANCED 3 IN 1 ADHESIVE (CONCRETE ONLY)
• Up to 95% RH levels in concrete using in-situ probes in accordance with the latest version of ASTM F2170.
• pH test results up to 11.0.
• Test for sealers and curing compounds.
M808 TRI-POLYMER ADHESIVE
Wood
• Wood substrates should test less than 12% using a wood moisture meter.
Concrete
• Up to 85% RH levels in concrete using in-situ probes in accordance with the latest version of ASTM F2170.
• pH test results between 7.0 and 9.0.
• Test for sealers and curing compounds.
M92X MODIFIED MOISTURE CURED URETHANE ADHESIVE
Wood
• Wood substrates should test less than 12% using a wood moisture meter.
Concrete
• Up to 90% RH levels in concrete using in-situ probes in accordance with the latest version of ASTM F2170.
• pH test results between 7.0 - 9.0.
• Test for sealers and curing compounds.
To correct any suboor conditions concerning moisture, either wait until the suboor dries to meet specications or use an appropriate moisture barrier. For
more information concerning moisture conditions, please contact Mohawk Technical Services at [e-mail] or call 888-387-9881.
NOTE: DO NOT INSTALL FLOORING IF MOISTURE TESTS RESULTS EXCEED RECOMMENDED LIMITS.