Seal-Once Stain & Sealers

NANO+POLY Premium Wood Sealer In Clear and Ready Mixed Colors


Seal Once Nano + Poly Wood Sealerlow-VOC-content

Long-lasting, Eco-Friendly Wood Protector & Stain

Seal-Once Nano+Poly is a premium waterproofing wood stain & sealer all in one can!

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

Combining proprietary nanotechnology, while adding the strength of polyurethane, it provides 360° of protection to wood surfaces.
Also offering a highly durable & breathable matte finish, while protecting the surface of the wood against everyday wear and tear, UV fading and water damage.
There are 9 ready-mix colors to choose from including clear.

Unlike many sealers where the finish sits on or near the top of the wood, NANO+POLYTM penetrates well below the surface to form a long-lasting, water-resistant shield around the wood fibers at the cellular level.  This penetrating protection from moisture and water intrusion helps resist wood rot, decay, mold & mildew. It also provides stability to the wood, eliminating warping & cupping. It is a great investment to preserve old or new wood & will extend its natural life for years.

Seal-Once exterior stain & sealer is a product that the end user only dreams of using:

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Use on:

1.) Decks & Fences
2.) Wood Siding
3.) Log Homes
4.) Outdoor Furniture
5.) Swing Sets
6.) Pergolas
7.) Thermally Modified Wood
8.) Shakes

Features & Benefits:

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
Extends natural life of wood
Easy soap & water clean-up
Clear allows the wood to grey naturally
Soap & Water cleanup
Excellent for use in high traffic areas
Tinted formula provides additional UV protection

Seal Once Nano + Poly Wood SealerSeal-once Color Swatches


Seal-Once Stain & Sealers low-VOC-contentSeal-Once Stain & Sealers 10 year Protection

Coverage per gallon of Seal-Once Stain & Sealers

  • Approximate coverage – 250-350 sq. ft./gallon
  • Actual coverage may vary due to porosity of the surface

Application Information

  • Do not use if air or surface temperature is below 50°F/10°C or above 95°F/35°C.
  • Do not apply in rain or when rain is imminent. For all stains (including Ready-Mixed), intermix gallons and stir to ensure color consistency.
  • DO NOT THIN. Mix well. Stir contents or shake thoroughly prior to use.
  • Test a small area to ensure acceptable appearance and penetration.
  • Apply first coat with a synthetic brush; pump-up garden sprayer; air-assisted and/or airless sprayer. Use 15-17 tip and medium to coarse spray pattern. When spraying, always back brush for best results.
  • Second coat can be applied once first coat has penetrated but is still damp. Second coat must be applied within one hour of applying first coat.
  • For best results, apply in the shade and out of direct sunlight.
  • Apply to all surfaces. 
  • Do not use with other waterproofing products.
  • Remove excess stain sitting or puddling on the surface. Back brush or use a rag to wipe away any runs, drips, or puddles that have not soaked in.

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Product & Safety Data Sheets


NANO+POLY Safety Data Sheet










Additional Premium Seal-Once Products to Note!

Seal-once Concrete & Masonry SealerSeal-once Marine Wood SealerSeal-once "All Wood Cleaner"Seal-once Concrete & Masonry CleanerSeal-once Exotic Wood Sealer Seal-once Nano Penetrating Wood SealerNon-Hazardous to Aquatic Life