SEAL-ONCE MARINE Coastal Grey Premium Wood Sealer, 5 Gallon - Outdoor Use
SEAL-ONCE MARINE Coastal Grey Premium Wood Sealer, 5 Gallon - Outdoor Use
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SEAL-ONCE

SEAL-ONCE MARINE Coastal Grey Premium Wood Sealer, 5 Gallon - Outdoor Use

4.5 stars out of 55 reviews
(4.5)|
55 ratings
SEAL-ONCE MARINE Coastal Grey Premium Wood Sealer, 5 Gallon - Outdoor UseSeal Once MARINE Coastal Grey Premium Wood Sealer 5 GallonSeal Once MARINE Clear Premium Wood Sealer 5 GallonSeal Once MARINE Natural Premium Wood Sealer 5 GallonSeal Once MARINE Natural Premium Wood Sealer 1 GallonSeal Once marine Premium Wood Sealer 1 galSeal Once MARINE Bronze Cedar Premium Wood Sealer 5 GallonSeal Once MARINE Clear Premium Wood Sealer 1 GallonSEAL ONCE Bronze Cedar MARINE Premium Wood Sealer 1 Gallon for wood boat docks
Size:5 gal
Actual Color:Gray
Beige
Bronze
Clear
selected, Gray

Key item features

  • Marine Protection: Special marine-grade formula deeply penetrates to stabilize and protect wood exposed to freshwater, saltwater, and high-moisture environments like docks and piers.
  • Eco-Friendly Formula: Ultra-low VOC, water-based, and non-toxic, ensuring safety for aquatic life, pets, and landscaping.
  • Flexible Barrier: Forms a breathable barrier that allows wood to expand and contract naturally, resisting cracking, warping, and cupping.
  • Weather Resistance: Repels water within 4 hours, guarding against rain, humidity, and salt spray while maintaining the wood's natural beauty.
  • Durable Longevity: Withstands harsh marine conditions, including UV exposure and mildew, for up to 10 years of vertical and 6 years of horizontal protection.
  • Natural Finish: Dries clear to let wood age and gray naturally or showcase its original grain, suitable for new, bare, or previously stained exterior wood.
  • Easy Application: Simple to apply by brush, roller, or sprayer with soap-and-water cleanup, available in 1-gallon and 5-gallon sizes.
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Current price is $339.98$68.00/gl
Price when purchased online
  • Free shipping

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Columbus, 43215
Arrives by Wed, Feb 11
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Sold and shipped by U-C Coatings
4.5 stars out of 5, based on 20 seller reviews(4.5)
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Customer ratings & reviews

4.5 out of 5 stars
stars55 ratings29 reviews
How item rating is calculated
  1. 5 stars78% (43)
  2. 4 stars7% (4)
  3. 3 stars5% (3)
  4. 2 stars4% (2)
  5. 1 star5% (3)

Reviews summary

Pros
  • : Applies easily with various tools.
Cons
  • : Colors may not match expected shades or tones.
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Showing 1-3 of 29 reviews

Aug 30, 2025
Mitzi
Top Reviewer
Item details
Size: 1 gal
Color: Clear
Sold byU-C CoatingsDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Worth the extra money!

I wasn't sure what to expect. Our deck is 3 years old. They used the other brand when it was built and most of the wood floor is cracking %26 splitting. First evening I pressure washed the deck. Next evening, I used my Mr clean sponge mop %26 a paint pan to apply. It Looks like thick milk or glue, so it's easy to see what you've covered. We will see if it lasts 6 years, but I'm very pleased with it today.

Incentivized Review
Helpful?396HHPSWIABP3342981803
reply from uccoatings Team

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

Aug 20, 2020
Earl
Item details
Size: 1 gal
Color: Clear
5 out of 5 stars review

Verified Purchase

So far so good!

So far so good. It's only been a few weeks since I purchased this product so keep that in mind. It applies very easy, I'm using it on my new cedar deck. It's rained a little and I have noticed that the water on the cedar is beading up. I'll apply a second coat later this year.

Helpful?396HHPSWIABP3342981803
reply from uccoatings Team

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

Oct 12, 2025
Allen
Item details
Size: 1 gal
Color: Clear
Sold byU-C CoatingsDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Good for another winter

Great product, excellent coverage and a nice subtle amber color that shows application. Super glad I bought for my trellis and planters.

Incentivized Review
Helpful?396HHPSWIABP3342981803