Hardwood Flooring
Flooring manufactured from hardwood species such as oak, ash, or walnut. Available as solid boards (18–20 mm thick, can be sanded and refinished multiple times) or engineered boards (a thin hardwood veneer bonded to a stable plywood core, dimensionally more stable). Engineered hardwood is better suited to underfloor heating than solid wood because it tolerates temperature and moisture variation more readily.