Seal Once Nano Penetrating Wood Sealer 5 Gallon Pail

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Seal Once Nano Penetrating Wood Sealer.

Seal Once Nano penetrating wood sealer has been leading the innovation in the use of nanotechnology to create long-lasting, Eco-friendly wood sealers & tinted wood stains since 2005.  Our New & Improved NANO Penetrating Wood Sealer, deeply penetrates the surface of wood to protect and also stabilize against water damage and decay.  Unlike many top-coat sealers that trap moisture below the surface, NANO creates a long-lasting, flexible, breathable barrier, that allows water vapor to escape & help prevent damage.  NANO is warranted to prevent water intrusion for up to 10 years on vertical & 6 years on horizontal surfaces.

SEAL ONCE NANO Waterproofing Wood Sealer & Stain is ideal for use on unfinished interior and also exterior wood surfaces. The clear formula allows the wood to age naturally without decay, changing to a rich silver-gray over time. It can also be used as a wood stain, when mixed with a full range of semi-transparent tints to enhance the appearance & provide additional UV protection from sun rays.

Seal Once Nano penetrating wood sealer RECOMMENDED USES:

  • Fences
  • Wood Siding
  • Log Homes
  • Shake Roofs
  • Thermally Modified Wood
  • Outdoor Furniture
  • Swing Sets
  • Pergola
  • Shakes
  • Decks


  • Water-based, Ultra-Low VOC
  • Eco-friendly, Non-toxic, No Odor
  • Won’t harm people, pets or plants
  • Penetrates below the surface
  • Creates flexible, breathable barrier
  • Helps resist mold, mildew & wood rot
  • Stabilizes wood from warping
  • UV barrier protects from sun rays
  • Extends natural life of wood
  • Easy soap & water clean-up
  • Clear allows the wood to grey naturally

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Additional information

Weight 42 lbs