Engineered wood refers to the way that the product is constructed. Rather than being one solid piece of wood, engineered floors are made of multiple wood plies stacked together in opposite directions. This creates a floor that is dimensionally stable and far less effected by moisture than a ¾” solid wood floor. Engineered wood construction is generally used when the floor is installed over slab concrete where the hardwood floor needs to adhere to the subfloor. It is the number one choice of homeowners because of the numerous styles, availability, and its ability to accommodate different types of subfloors.