Lifetime Structural Integrity Limited Warranty Limited warranty, to the original purchaser (cannot be assigned or transferred), that its first quality products, in their original manufactured condition, will be free from manufacturing defects in milling, dimension, and grade for the lifetime of the floor. Engineered products are warranted against de-lamination of the plies due to bond line failure. This limited warranty does not cover the normal expansion and contraction of wood flooring due to seasonal changes. Cupping, buckling, checking, or other wood movement due to moisture conditions not in conformance with guidelines is not warranted. 50-Year Finish Wear Layer Limited Warranty: Limited warranty, to the original purchaser, that the factory finish will not wear through or separate from the wood for 50 years from the original date of purchase on all factory finished products in the aforementioned collections when used in normal residential traffic conditions. 5-Year Light Commercial Finish Wear Layer Limited Warranty: Limited warranty, to the original purchaser, that the factory finish will not wear through or separate from the wood for 5 years from the original date of purchase on all factory finished products in the aforementioned collections. Light commercial applications include such areas as business offices and retail shops. "Wet areas" such as commercial kitchens, hair salon chair stations, etc. are not considered "light commercial".