Unlike many sealers that only form a top-coat, NANO+POLY^TM penetrates below the surface to form a long-lasting, water-resistant shield around the wood fibers at the cellular level.  This penetrating protection from water intrusion helps resist wood rot, decay, mold & mildew.  It also stabilizes wood, eliminating warping & cupping.   It is a great investment to preserve old or new wood & extend its natural life for years.

When used as a wood stain, Seal Once Nano-Poly Standard Colors provides added UV protection.  NANO+POLY^TM has no toxic chemicals like many oil & solvent based sealers,  so it can be applied around your home, landscaping, vegetation or over water safely.  Warranted to prevent long-standing water accumulation for up to 10 years on vertical & 6 years on horizontal surfaces.