Seal Once Multi-Surface Concentrate Wood and Masonry Sealer 5-gallon

SEAL-ONCE has been leading the innovation in the use of nanotechnology to create long-lasting, eco-friendly wood sealers & tinted wood stains since 2005. Multi-Surface Concentrate with NANO deeply penetrates the surface to protect & stabilize wood, concrete & masonry against adverse weather & caustic conditions, including salt water spray. It uses proprietary nano-polymers to form a flexible, breathable barrier by coating the wood fibers and concrete pores, preventing water ingress.