A B C D E F G H I J K L M N O P Q R S T U V W A top Above Grade Refers to flooring installed above ground level, with a minimum of 18 inches of well-ventilated space available. Abrasion Refers to the act of wearing away at a hardwood floor finish, thereby damaging the wood. Acclimation Refers to the hardwood’s adjustment to the environment it is . . . Read more