Engineered hardwood consists of two layers. The top slab is the same real wood that you
get with solid hardwood planks. The surface veneer, which is called the lamella, is sawn from genuine logs and dried to remove the natural moisture. This produces a stable top layer that is
better able to resist cupping. The lamella can be cut from any type of domestic or exotic hardwood although oak, maple and hickory are the most prolific in the market. The hardwood skin is
available in a variety of textures and stains and is sealed with a factory finish.
The top hardwood veneer is then glued onto the core, which consists of multiple plies of wood that are stacked in opposing directions. This cross-ply construction further strengthens the
stability to make the flooring more rigid and resistant to cupping and warping. The wood in each ply is bonded with adhesives, intense heat and pressure and then fused to the next ply to reduce
the normal contraction and expansion problems found in hardwood flooring. The core layer is most often made of plywood, but hardwood and high density fiberboard (HDF) are also commonly used. The
number of plies varies widely in the industry, ranging from three to seven. Premium products have more layers and sometimes include a hardwood backing on the bottom to provide extra