Follow all surface preparation instructions issued by the flooring manufacturer. Substrates must be structurally sound, solid and stable. Surfaces must be clean and free from dirt, dust, debris, oils, waxes, or any other material that would inhibit bonding of the adhesive to the substrate. Floor level cannot exceed a variance of 3/16” per 10 feet. Moisture testing must be carried out on all concrete subfloors in accordance with ASTM F1869 or ASTM F2170. MVER must not exceed 5 lbs. per 1,000 sq. ft. per 24 hrs. or 80% RH on existing slabs. Green slabs must not have a MVER in excess of 8 lbs. per 1,000 sq. ft. per 24 hrs. or 90% RH.