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