SEAL-ONCE NANO+POLY Concrete & Masonry Sealer, 5 Gallon - Outdoor Use
SEAL-ONCE NANO+POLY Concrete & Masonry Sealer, 5 Gallon - Outdoor Use
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SEAL-ONCE NANO+POLY Concrete & Masonry Sealer, 5 Gallon - Outdoor Use

3.4 stars out of 7 reviews
(3.4)|
7 ratings

Key item features

  • Penetrates deep below the surface to form a durable, water-resistant barrier within concrete and masonry pores, preventing cracking, spalling, and efflorescence.
  • UV-stable, non-yellowing clear finish preserves the original look of your concrete, pavers, and masonry.
  • Highly resistant to abrasion, mold, mildew, and fungi, extending the life of high-traffic outdoor surfaces.
  • Eco-friendly, water-based, ultra-low VOC, and non-toxic—safe for people, pets, plants, and marine life.
  • Flexible, breathable barrier allows water vapor to escape, helping prevent peeling or trapping moisture.
  • Easy soap-and-water cleanup; applies easily by brush or sprayer for both horizontal and vertical surfaces.
Current price is $217.18
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3.4 out of 5 stars
stars7 ratings6 reviews
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Showing 1-3 of 6 reviews

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?0ZQT018HL710502580825
May 27, 2025
Fred J
5 out of 5 stars review

Wooden Deck Preserved

The NANO+POLY Wood Sealer is the best I've every used. I purchased last year and used on new deck boarding and decided I would seal again this year even though I don't think it needs it. The boards have dried and very small cracks are appearing and I thought it would be best to get the "new exposed wood' sealed. My plans are to keep using the sealant.

Review from UC Coatings
Helpful?0ZQT018HL710502580825
May 20, 2025
Billy M
5 out of 5 stars review

Deck Sealer review

This is actually a decorating of deck surface. Wanted the tint a little darker.

Review from UC Coatings
Helpful?0ZQT018HL710502580825