Engineered hardwoods are composed of layers of wood, glued together on the bottom, and a veneer of finished hardwood on the top. Because they’re made of real woods, they require the same care and maintenance as real wood products do. Because of their cross-ply construction, engineered floors are more dimensionally stable than solid wood. These floors can be installed on any level of a home, and even on top of radiant heat because of the reduction in expansion/contraction of the planks normally caused by variations in humidity and moisture. Most engineered floors can be glued or stapled down, or floated over many different types of subfloors, including wood, dry concrete slabs, and a few types of existing flooring. They are available in plank and longstrip format, and come in a variety of widths, thicknesses, colors and species. Some types of engineered floors can be refinished, but some cannot.