Wolman RainCoat Oil Base Clear Sealer is an exceptional, one coat, oil base exterior water repellent designed to provide protection against water damage and mildew. The RainCoat Clear Sealer formula allows the wood’s original color and character to show. Its Extreme Weather Protection formula includes hydrophobic technology that provides superior water repellency to maximize resistance to wood cracking, splitting and warping. It is recommended for immediate application to pressure-treated lumber products.