• No other floor covering compares to the richness, beauty and value of wood. Bois Expansion offers you a complete selection of North American wood species, with a natural finish or stained. You will find what you need in our large selection of floorboards which come in different widths. Moreover, our customized selection of "Bois Expansion" floorboards is environmentally friendly because we use wood pieces that would otherwise be unusable. This glued-laminated timber resists really well to temperature variations and to humidity, and it can be sanded like a traditional wood floor.