SEAL-ONCE NANO+POLY Wood Sealant, Polyurethane Exterior Waterproof Deck Treatment, 5 Gallon - Outdoor Use
SEAL-ONCE NANO+POLY Wood Sealant, Polyurethane Exterior Waterproof Deck Treatment, 5 Gallon - Outdoor Use
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SEAL-ONCE

SEAL-ONCE NANO+POLY Wood Sealant, Polyurethane Exterior Waterproof Deck Treatment, 5 Gallon - Outdoor Use

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Size:5 gal
Actual Color:Beige

Key item features

  • Advanced Formulation: Features a proprietary nanotechnology formula fused with polyurethane for maximum flexibility and durability, providing comprehensive 360 protection.
  • Deep Penetration: Penetrates deep beneath the wood surface to form a lasting, water-resistant barrier at the cellular level, resisting rot, decay, and cupping.
  • Eco-Friendly Design: Water-based, eco-friendly, and ultra-low VOC formulation, making it odorless and safe for people, plants, pets, and surrounding landscaping.
  • Versatile Application: Suitable for various outdoor wood surfaces including decks, fences, wood siding, log homes, outdoor furniture, swing sets, and pergolas.
  • Protective Benefits: Shields against wear, tear, UV fading, water damage, and mildew, while allowing wood to naturally expand and contract.
  • Color Options: Available in Clear and Ready Mixed Colors, including Coastal Gray, Light Brown, and Natural, to both protect and beautify wood surfaces.
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Current price is $317.00
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Arrives by Mon, Jun 22
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Sold and shipped by U-C Coatings
4.647058823529412 stars out of 5, based on 34 seller reviews(4.6)
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4.7 out of 5 stars
stars22 ratings14 reviews
How item rating is calculated
  1. 5 stars82% (18)
  2. 4 stars9% (2)
  3. 3 stars5% (1)
  4. 2 stars5% (1)
  5. 1 star0% (0)
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Showing 1-3 of 14 reviews

May 26, 2026
anonymous
Item details
Size: 1 gal
Color: Bronze
Sold and shipped byU-C Coatings
5 out of 5 stars review

Verified Purchase

The product work better than expected. I'm glad I made my decision on this product.

Incentivized Review
Helpful?7H76OXN37RMS895617070
reply from uccoatings Team

Thank you for your feedback, we’re happy to hear that this product worked well for your application!

Nov 6, 2025
Chris
5 out of 5 stars review

Seller Verified Purchase

Excellent Stain and Sealer

This is one the best stain/sealers on the market. It goes on easy, clean up is easy, and lasts a long time. The color tint is excellent.

Review from UC Coatings
Helpful?7H76OXN37RMS895617070
May 31, 2025
kathleen
Top Reviewer
Item details
Size: 1 gal
Color: Brown
Sold and shipped byU-C Coatings
5 out of 5 stars review

Verified Purchase

Deck stain

Yes, “Seal Once”…once a year.

Helpful?7H76OXN37RMS895617070
reply from uccoatings Team

Thank you for your feedback, we’re happy to hear that this product worked well for your application!