SEAL-ONCE MARINE Clear Premium Wood Sealer, 5 Gallon - Outdoor Use

Special marine-grade formula penetrates deeply to stabilize and protect wood exposed to freshwater, saltwater, and high-moisture environments like docks, piers, and pool decks. Ultra-low VOC, water-based, and non-toxic—safe for use near aquatic life, pets, and landscaping.

Forms a flexible, breathable barrier that allows wood to expand and contract naturally, resisting cracking, warping, and cupping. Repels water within 4 hours, guarding against rain, humidity, and salt spray while maintaining wood’s natural beauty. Withstands harsh marine conditions, including UV exposure and mildew, for up to 10 years of vertical protection and 6 years of horizontal protection.

Dries clear to let wood age and gray naturally or showcase its original grain; suitable for new, bare, or previously stained exterior wood. Easy to apply by brush, roller, or sprayer with simple soap-and-water cleanup, available in both convenient 1-gallon and 5-gallon sizes to fit any project scale.