Suitable Substrates*
- Concrete (structurally sound)
- Absorbent terrazzo on concrete†
- Patching, leveling or fill materials
- APA-grade underlayment plywood, untreated†
- Properly primed gypsum underlayments (above-grade only)
- Radiant-heated subfloors not to exceed 85°F (29°C)
- Other approved, non-porous materials:†
- Non-porous (non-absorbent) cementitious terrazzo
- Ceramic, quarry or porcelain tiles
- Epoxy coatings
- Epoxy terrazzo
- Existing resilient flooring (fully adhered, non-cushion
backed) - Certain metals (contact the ARDEX Technical Service Department for guidance)
*Refer to the specific recommendations of the flooring manufacturer for suitable substrates. Please note that all substrates must be clean, sound, solid, well bonded and prepared as detailed below.
†Must be sound, solid and well-bonded to underlying, structurally sound substrates.