Renewable can be referred to as a resource that can be replenished or reformed either naturally or by systemic recycling of used resources. Renewable is resource or source of energy that is replaced naturally or controlled carefully and can therefore be used without the risk of finishing it all (Oxford dictionary).
Engineered Hardwood Floors. Engineered hardwood floors are not solid hardwood. Only the top layer is finished real wood so that you get the look and feel of a hardwood floor. The bottom layer, or core, is made up of stacked layers of fiberboard or plywood.
Engineered floors can be nailed or stapled to a wood subfloor, or glued down to a wood subfloor or concrete slab. This makes engineered wood floors ideal for slab and basement installations, but they can be used in any room either above or below grade.