Specifications Part 2

Page 4 of 5 6065-M (2016_7_6)
PART 3 – EXECUTION
3.01 SITE INSPECTION
A. Examine the subfloor before installation to ensure that the surface is clean, dry, smooth, structurally sound
and free from foreign substances that may adversely affect adhesion or cause discoloration. Furthermore,
ensure that the subfloor is free of adhesive, oil, grease, solvent and other foreign substances that may
adversely affect adhesion or alter the appearance or durability of the vinyl flooring.
B. Verify the surface to ensure there is no powder, scaling or mold. If there is, remove it with a mechanical
sander and level with a good-quality cement-based Portland primer.
C. Never remove residual or other adhesive with chemical adhesive removal products; their use will
automatically void the Mohawk product warranty.
D. Report and rectify all unsatisfactory conditions. Do not start flooring installation until all rectifications have
been completed.
3.2 SUBFLOOR PREPARATION
A. All subfloors should be smooth, flat and dust free with the tolerance not exceeding more than 3/16” in a 10’
span. All subfloor and underlayment patching must be performed with a non-shrinking, water-resistant
Portland-based patching compound.
B. Concrete subfloors must be dry, smooth and free from dust, solvent, paint, wax, grease, oil, asphalt sealing
compounds and other extraneous materials. The surface must be hard and dense, and free from powder or
flaking. The floor should have a moisture reading of less than 95%RH per ASTM F 2170.
C. New concrete slabs must be thoroughly dry (at least six weeks) and completely cured. The final responsibility
for determining if the concrete is dry enough for installation of the flooring lies with the floor covering
installer.
D. Holes, grooves, expansion joints and other depressions must be filled with a Portland-based underlayment
and troweled smooth and feathered even with the surrounding surface.
E. Measure the humidity levels in the cement in compliance with the following standards before installation:
1. ASTM F 2170, Relative Humidity (RH) test using in situ probes. The maximum allowable reading:
a. 95% RH for M95.0 Adhesive
b. 93% RH for the MS160 Spray Adhesive
2. The ASTM test frequency recommendation is 3 measures for the first 1,000 sq. ft. (92.9 sq. m) and
one measure for each additional 1,000 sq. ft. (92.9 sq. m).
F. Installs on slabs with up to 95%RH.
G. In case of doubt, test the adhesion on the cement subfloor or other surface that will be covered by the
flooring. Do the test using the specified flooring and recommended adhesive.
H. Follow all other subfloor preparation guidelines as outlined in the Mohawk Group installation instructions.
3.3 RESILIENT FLOORING INSTALLATION
A. Install the flooring according to the latest version of Mohawk Group’s Installation Instructions. Use the tools,
adhesives, trowel types and procedures recommended in the instructions.
B. Acclimatize the subfloor, all flooring material and adhesive for 48 hours before and during the installation by
maintaining the room temperature between 65°F (18°C) and 85°F (29°C). Afterwards, maintain the
temperature between 55°F (13°C) and 90°F (32°C).