Engineered Unfinished
Engineered flooring is made up of a veneer layer glued to a core. The core can be made of hardwood, plywood or other wood materials. Engineered flooring can go over concrete, areas with more moisture and allows for wider width sections (without cupping like very wide solid wood boards might).
Engineered unfinished wood has become popular recently. It provides the stability and flexibility of the engineered wood but provides flexibility in terms of finish color. See our Engineered Unfinished options here.
For more information about engineered flooring, you can read this article (on an external site).