Clear, mildew-resistant water repellent designed to protect wood from water absorption. Will bead water for 2 years on horizontal surfaces. Allows wood to gray naturally. Immediate application to brand new, damp wood, even pressure-treated. Can be used on redwood and cedar. Exceeds Federal Specification TT-W-572b and NWWDA Specification M-2-81 for water repellency on wood. Can be used on brick, concrete and other masonry surfaces.