Backed by over 45 years of manufacturing excellence, Brock Deck has a lifetime residential warranty and a twenty-year commerical warranty. The deck railing has a lifetime warranty (non-prorated) against warping, rotting, corroding, flaking, peeling, blistering or discoloration. Sheerline decking and railing is manufactured by L.B. Plastics and both have a lifetime warranty. As accelerated age testing is ongoing, the life expectancy for our decking is estimated to be at least 35 to 40 years. However, it should outlast us all!