Depends on the installation. If the PEX was laid in wood sub-floor or radiant wood panels, yes. If the tubing is in concrete, maybe. If the system is in gypcrete with a sleeper system, definitely. We recommend quartered and rift sawn oak over radiant heat as it is the most dimensionally stable material we have found through research. So same material over wood sub-floors and sleepers (a lot of waste with sleepers. On concrete? Moisture testing and glued down engineered flooring is better.