Wolman Durastain Transparent Stain is a clear water-based exterior water repellant designed to provide protection against water damage and UV graying. Durastain Transparent Stain formula beautifies wood with sheer natural wood-toned color, which allows the wood’s character to show through while protecting the surface from water damage. The NeverWet hydrophobic technology properties and superior water repellency helps maximize resistance to wood cracking, checking, splitting and warping.