Engineered flooring is made using a cross ply veneer construction using 5 plies of hardwood veneer. All of which are laid on top of each other at 90 degree angles this stops the wood from expanding the bottom. Middle layer usually consists of spruce wood and on top of this is a layer of real hardwood which can range in thickness from between 1.5mm and 4mm the overall thickness of structured flooring can range from 10mm to 14mm. This is the most stable construction of all wood floors that we know about on the market today.  It is designed to be glued directly to a concrete slab or laid in several ways with the most common being glue between the tongue and groove. This product is for those interested in a custom finish.  We recognize the importance of creating a custom design with a particular stain, finish and species of wood.