Engineered hardwood floors are wooden floors made with multiple layers of wood adhered together, rather than one plank cut from a single timber, to create flooring planks available in multiple sizes and thicknesses. The top layer, often referred to as the veneer, is made of the species of wood desired to be seen. The bottom layer is also made of wood, but not necessarily the same species as the top layer. In the middle is a core built from 5 to 7 layers of plywood that crisscross in different directions. The species of wood uses for these core layers will vary depending on the quality of the product. Higher quality engineered wood products will boast core layers made of higher grade hardwoods.
This crisscross construction of the core layers creates a highly stable core that is less likely to expand, contract or shift when exposed to moisture, humidity and temperature. This makes engineered wood flooring a great option in rooms that are subject to moisture (like basements) or over concrete slab and radiant heating systems. Often times engineered hardwood products are warrantied for use in rooms where solid hardwood would not be warrantied, such as below grade.