






๐ Seal your space with marine-grade confidenceโbecause your deck deserves the best!
Seal-Once Marine Waterproof Wood Sealer and Stain is a premium, water-based polyurethane formula designed specifically for outdoor wood exposed to marine environments. It offers UV-stable, waterproof protection that penetrates deeply to shield wood fibers from saltwater, moisture, and decay. Safe for use over open water and non-toxic to aquatic life, this sealer extends the life of decks, docks, and siding with up to 10 years of vertical surface protection. Its natural finish ages wood beautifully while preventing mold and mildew, making it the go-to choice for professionals and homeowners seeking durable, eco-conscious wood care.












| ASIN | B08WNBKFYK |
| Base Material | Wood |
| Best Sellers Rank | #525,939 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #915 in Household Stains |
| Brand | Seal-Once |
| Brand Name | Seal-Once |
| Coating Description | Water-based |
| Color | Natural |
| Compatible Material | Wood |
| Container Type | Jug |
| Customer Reviews | 4.4 out of 5 stars 87 Reviews |
| Finish Types | Natural |
| Item Dimensions | 17 x 14 x 14 inches |
| Item Weight | 3.98 kg |
| Item dimensions L x W x H | 17 x 14 x 14 inches |
| Liquid Volume | 1 gallons |
| Manufacturer | U C COATINGS |
| Manufacturer Part Number | SOMARINEWOOD |
| Material | Wood |
| Material Type | Wood |
| Model Number | SO7620FBA |
| Paint Type | Water Based |
| Recommended Uses For Product | Thermally modified wood, boat docks, flooring, siding, porch, decks, retaining walls |
| Surface Recommendation | Wood |
| UPC | 759126974022 |
| Unit Count | 128 Fluid Ounces |
| Warranty Type | Time-based (Limited) |
M**Z
The quality of the product
Excellent paint. I have this deck since 2020 & I painted it myself 3 times. This new one is the 4th try.. Iโm pretty sure that it would be the best wood deck paint I ever used.
S**H
Worked great as stain for maple trim
This marine stained worked fantastically as an interior door stain to match existing maple trim. This is a fir door replacement. The stains at the big box store (yellow can variety) were all off - either too dark or too orange-ey. The seal once in โnaturalโ fit the ticket. I have no clue if this is a recommended application of this product, but it was easy to apply and seems fine. The exterior of the door is painted so wonโt be able to comment on longevity. Seller was responsive to question and product came shipped very nicely/securelyโฆ. Perhaps a little *too* securely; the plastic lid lock was not easy to pop off and required several different tries with pliers, multiple screwdrivers, etc.
C**Z
Deck sealant
Phenomenal product highly recommend but purchase it in 5 gallon quantity less trash to throw away
B**Y
Recoat while wet.
I got the clear for sanded fir 2 x 6โs. Iโd get the warmer tone if I was you. It does look good with 2 coats. Be sure to put on the second coat while the first coat is still wet. It should work well.
K**G
Does what it says
I coated the teak on my sail boat with two coats and the water now beads up on the teak. Prepping the teak is hard work but applying this product is easy as brushing on water. I used the clear to protect the natural teak.
D**S
follow instructions and you'll be happy
i used this on my private dock and it looks great and protects wood from elements. a little pricy but worth it.
R**L
Excellent product.
Easy to apply. The Wood just soaks it in. It dries fast and water just beads after application.
A**R
It stays wet more that 24 Hours but is instantly waterproof
Too expensive but would buy again
Trustpilot
1 week ago
3 weeks ago