

💧 Seal in strength, shine, and sustainability — your wood’s new best friend!
Waterlox Marine Sealer is a clear, oil-based primer that penetrates and waterproofs wood surfaces, formulated with 90% renewable Tung oil resin. Ideal for both interior and exterior use, it restores and protects bare wood, brightening grain and allowing multiple coats without sanding. Designed to be used with Waterlox Marine Finish, it ensures durable, natural, and eco-friendly protection for marine and household wood projects.
| ASIN | B01N4F7FM7 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #288,177 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #790 in Hardware Sealers #1,440 in Household Finishes, Sealers & Stains |
| Color | Clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (88) |
| Date First Available | October 7, 2015 |
| Included Components | Marine Sealer |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 7.78 pounds |
| Item model number | TB3809 GL |
| Manufacturer | Waterlox |
| Material | Oil Based |
| Part Number | TB 3809 Gallon |
| Product Dimensions | 6 x 4 x 1 inches |
| Size | Gallon |
| Style | Compact |
P**.
Keep a wet tip.
This is an excellent product for interior or exterior finish on bare wood.
N**N
Restores old wood easily
Love this product! We used this on our barn softwood floors, you can add coats on top of coats without sanding. If you get a scratch you can hand sand the area and then water lock without having to sand the whole floor.it brightens the fliers beautifully. I have used it to restore old dry furniture.
T**E
AMAZING WOOD PROTECTION
This sealer is simply fantastic for any wood project. We used this on a restoration project of a 1903 wood porch. The sealer brings out the color and texture of the wood like magic! This can go on any natural wood flooring (after sanding). They use this sealer in the White House. The sealer alone will work if no UV protection is needed (it is a little bit more durable than the finish). If you need UV protection, then the Waterlox Marine Finish should go on top. I can not recommend this product highly enough. We also used it on some brick in the basement, brought out the red of the brick like magic also. A++++++
C**R
As expected
Use for refinishing shutters
K**H
Authentic product?
I'm just not certain I got an authentic product. The can had some drizzle from braising on the lid. Not something you'd see if it was machine done. The finish seems right from all other appearances, though this is my first go with this product. I like the results, and I'll use this product on anything I want a nice light amber clear coat on. I hear the shine goes away after the ridiculously long 30-90 day curing. Looks really nice, but you will see everything separating your product from fine art due to clarity of the finish.
R**R
Don’t waste your money
This product is simply inappropriate for marine use. Cannot be used in high humidity, direct sunlight, typical marine conditions. Misleading promotion
5**N
Excellent Product
This sealer is great! Watch the videos they have for application, get the applicator they recommend. Give a light sanding prior to use, clean with a tack cloth, and you will get a flawless, smooth finish! Wish I had found this years ago!
A**R
Exceptional Quality
In years of doing wood maintenance and projects I've found nothing that comes close to Waterlox quality. It's a time consuming process as you really do need to wait at least 24 hours between coats but the maintenance afterwards is a walk in the park. I highly recommend their products especially if you have an exterior surface to treat like does, shutters or gables.
B**A
Used for outdoor deck chairs so will have to wait to see how long this protects from rain and sun
Trustpilot
2 weeks ago
1 week ago