Solid hardwood refers to planks that are cut from the tree in one solid piece. It is an extremely popular flooring due to its authenticity, and has a timelessness that cannot be overstated. However, as a natural material solid hardwood is slightly more fragile, requiring gentler treatment throughout its entire life. Solid hardwood must be properly acclimated, installed, and cared for to truly look its best, but many buyers agree that the results are worth the effort.