Why’s of Engineered Wood Floor Construction
During engineered wood floor construction each of the individual alternating plies will be stacked in the opposite direction. Through natural forces the plies pull against one another keeping them dimensionally stable and far less effected by moisture than a 3/4″ solid wood floor. This greater dimensional stability and resistance to moisture enables engineered wood floors to be installed over concrete slabs and below ground level as long as the concrete slab is dry and clean.
Engineered wood floor construction commonly consist of 2, 3 or even 5 thin layers. The top layer is a laminated unit with a thickness between ¼ – 9/16 inch. Available as both strip and plank flooring, the width will usually range between 2- ¼ and 7 inches wide. It is often found in random lengths of 12 – 60 inches. Any number of species, domestic or exotic can be used as the top or finish layer. While oak is the most common species used for engineered wood floor construction, though many different species wood are used. With engineered wood floor construction the top ply may be a totally different wood species than that of the other plies.
Hardwood Floors Magazine has an excellent article on engineered wood flooring titled, Engineered 101: Understand the Fundamentals of Engineered Wood Flooring.