TRIÂNGULO® Exotic Hardwoods utilizes the highest quality engineering process in the industry. Each of the under layers of real wood (or plies) is glued under pressure in different directions for strength and durability. This cross-ply construction results in a product this is more stable than solid hardwood flooring. The stability of Triangulo hardwood flooring refers to susceptibility to shrinkage and expansion caused by environmental conditions. It is this additional stability that allows for Triangulo engineered hardwoods to be installed over a mature concrete slab and may be installed in multiple applications; unlike solid wood floors.