Seal Once Poly Blend nano-tech eco-friendly waterproofing wood protector is formulated with aliphatic polyurethane for exterior and interior surfaces to crate Seal Once Poly bland. The combination of Seal Once and poly increases abrasion, scuff and mar resistance and provides additional UV protection to the semitransparent stains. Product has excellent non-yellowing properties and chemical resistance. Properly prepare unsealed wood surfaces such as decks, siding, railings, fences, shingles, play structures, bleachers, log homes, outdoor furniture, garden beds and timber frames. Allow pressure treated lumber to age 3 to 6 months before application. To test readiness of the untreated materials, spill water onto the surface. If it soaks in, the surface is ready for Seal Once Ply Blend.