Preparation of Concrete Slabs to Receive Resilient Flooring
- Dry, clean, smooth, and structurally sound
- Free of dust, solvent, paint, wax, oil, grease, residual adhesive, adhesive removers; curing, sealing, hardening, or parting compounds; alkaline salts, excessive carbonation or laitance, mold, mildew, and other foreign materials that might prevent adhesive bond.
- Calcium chloride moisture tests (ASTM F1869); results should be 3 pounds or less or resilient flooring manufacturer’s recommendations
- RH Probe Test 75% or less or resilient flooring manufacturer’s recommendations.
- Alkalinity testing; maximum pH of 9
- Don’t use adhesive removers
- Radiant heated floors: surface temperature should not exceed 85 degrees F (29 degrees C)
- Flatness requirements: +3/16″ in 10 feet (FF32)
- Drying time for slab: minimum of 60-90 days
- Water/cement ratio: 0.40 to 0.45
- Moisture retarders recommended under all on- and below-grade concrete floors.
This is a summary. For a copy of the latest version of ASTM F 710 Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring, contact ASTM International at: https://www.astm.org/Standards/F710.htm