Installing engineered hardwood over concrete is a standard practice, but it requires diligent subfloor preparation to succeed. Concrete is porous and can release trapped moisture, which can ruin a hardwood installation. Before starting, the concrete slab must be tested for moisture using calcium chloride tests or relative humidity probes to ensure it meets the manufacturer’s and NWFA requirements. If moisture levels are elevated, you must apply a high-quality, professional-grade moisture mitigation system or a concrete sealer before proceeding. Once the subfloor is dry and level, use an approved underlayment, which often acts as a vapor barrier and provides sound dampening. The flooring can then be installed using a glue-down or floating method depending on the specific product's design. If gluing down, ensure the adhesive is compatible with the flooring and the moisture barrier. Following these technical steps ensures the floor remains stable, prevents board gapping or cupping, and satisfies the conditions of the manufacturer's warranty.
Key considerations
- Anderson Tuftex
- hardwood installation
- concrete subfloor
- engineered hardwood