An EPA approved organic preservative protects against rot, termites, fungi, water and corrosion to fasteners. Lifespan is durable, non-corrosive, and carries a 30-year warranty. The product's factory-applied two-coat alkyd primer system further protects against water infiltration and weathering. The first full primer coat provides deep penetration and high film build to provide water repellence and to limit cracking. The second primer coat acts as an undercoat, providing a smooth, even, defect-free surface, concealing fingerjoints. The primers used in Lifespan are supplied by PPG Industries.