

💧 Seal your space, save your style — waterproof like a pro!
SEAL-ONCE MARINE is a 1-gallon, water-based wood sealer designed for high-moisture outdoor environments. Its ultra-low VOC formula offers UV-stable, waterproof protection that penetrates wood fibers deeply, creating a flexible, breathable barrier ideal for docks, decks, and piers. Safe for aquatic life and easy to apply with soap-and-water cleanup, it enhances wood’s natural beauty while extending its lifespan.












| ASIN | B00EQ89RYW |
| Best Sellers Rank | #2,682 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Household Stains |
| Brand Name | Seal-Once |
| Color | Clear |
| Compatible Material | Wood |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,333) |
| Included Components | SEAL-ONCE MARINE - 1 Gallon Penetrating Wood Sealer, Waterproofer & Stain. Water |
| Item Dimensions | 12 x 12 x 12 inches |
| Item Form | Liquid |
| Item Weight | 8.8 Pounds |
| Manufacturer | New Image Coatings, LLC |
| Material Type | Polyurethane |
| Model | 7614 |
| Number of Items | 1 |
| Part Number | 7614 |
| Style Name | Outdoor |
| Surface Recommendation | Walls,Wood |
| UPC | 850336001024 |
| Unit Count | 128.0 Fluid Ounces |
| Water Resistance Level | Waterproof |
B**A
This is what you need!
Wow! I couldn’t be more impressed! I searched for the perfect sealer for a live edge outdoor art piece and this one ticked all the boxes: Goes on quick and easy, low/no odor, soap & water clean up, fast drying, non-yellowing and excellent waterproofing. The best part!? It lived up to all of my expectations! The only “negative” about this product (which was actually an amazing bonus) was the clip added to the top of the gallon to prevent leaking during shipping was on tight and took some muscle to remove!! Shipping was lightening fast too!! It did an excellent job in sealing the live edge of the wood and I anticipate it will preserve it for years!
K**E
Awesome product for sealing cedar
Used this to seal our cedar deck that I built. Goes on smooth, used a pump sprayer and then went over with a paint roller. Has a milky color when first applying and then dries clear. Applied two coats back to back. Deck is about 450 square feet and I used almost two gallons. Only complaint is the handle, I had one break off while pouring product in to my pump sprayer. Beads water like crazy and brings out the beautiful color of the wood. Smooth to walk on and very easy to clean once dry.
I**L
Awesome product
this stuff is amazing. After sanding my porch steps, I treated them with this sealer. The wood was instantly sealed and the water just pearled. I prefer the natural wood look.
G**T
I believe it will help the life of my treated lumber.
Having just applied the product to a full sun and rain deck application, I found the product easy to apply and clean up. Not sure about longevity at this point, but water beads up. Product leaves a satin finish. One point: I applied the first coat and waited 20 minutes to apply the second (I individually coated each deck board on all sides and ends). The second coat is still sticky three days later. I began to watch the absorption rate on the first coat and applied the second coat much sooner, allowing the coats to blend and the final boards had only a very light tack to them after 24 hours. The temperature maximum was 85 degrees during the applications.
R**G
READ and following the instructions
All of my reviews are of things I buy for myself. I do not accept freebies or anything in exchange for my reviews. Period. The Marine stain-sealer works very good. It has good coverage, goes on easily and quickly and the result is long lasting and looks great. It's my go-to stain-sealer now. I use it on my decks instead of the nano type. I've read many of the reviews and throughout many of them the same theme comes up, lack of proper wood prep or not following instructions. Preoprly prepared wood and follwing instruction will provide you with one of the best stain and sealer applications of any product including the top tier name brands. The wood. If the wood isn't properly prepared then no matter what you put on it will fail prematurely. Putting any stain and selaer on new bought wood is a mistake unless you first clean it and sand it. The wood you buy often has a waxy coating on it and sometimes anti-mold agents put on it. If all you try to do is buy new wood for your deck or project and then just stain and seal it, it won't last. Clean the new wood first, it's easy and you can use a dilution of bleach, water and dawn dish soap. Use a deck brush to scrub the wood and then rinse it off real good. The let it dry for at least two days, 3 or 4 days if it's humid or not really warm outside. If you don't do this the stain and sealer will not take. Before you apply the stain-sealer, test for penetration. When you apply a small amount it should soak right into the wood. If it sits on top, it's not going to work, nothing else will either. If you are using it on a deck, sand it even after cleaning the boards. Then just before you sapply, wipe the boards with a damp clean rag. Do not rely on using an air compressor or brush to get the sanding dust off. The rag should be just damp, not soaking. Let the boards dry for a few minutes and then apply the stain-sealer. It should soak right into to wood. This coat should not be heavy, but rather a light to medium light coart. You should not see shine on the surface. If you do, that means the stain-sealer isn't penetrating and you didn't prepare the wood correctly. On a 16' typical deck board, start from one end and let it sit for about 5-10 minutes. Go back to where you started to put on the secnd coat. This will be a light coat and it might seem shiny for just a short time. Don't use a heavy coat or it will sit on top and come off ahwn it wears or water gets on it. Curing. Let it cure. 2 days is best. Planning for this time is essential. If you need to use the deck then do part of it and then block that area off. Rotate areas you can use vs areas that need to cure. When to apply. After the morning sun is up and temps are up. Applying stain-sealer while the air has a lot of humidity is bad practice. Same with trying to finish some boards late in the afternoon unless your area is still nice and warm with low humidity. Decks or docks near or over water. The air is full of humidity so only aply at the height of the warm part of the day. Many boards on docks have been previous treated with oily sealers. Sorry, you'll never get that stuff off the boards so your choice is to use a similar sealer because nothing else will hold up. So clean your dock boards really good. The problem is that anything you use to clean much be ok if it gets into the water or can drain into the water. That means if the wood was treated with any oily type selaer nothing you can use that is safe for the water will also take off the previous oily sealer. Use the right product for the job. Brushes. Amazingly, some of the cheap synthetic brushed worked far better than expensive name brand brushes. The more expensive brush load up too much sealer and that isn't what you want. You want the sealer to run off and out of the brush so you can control how much goes on the wood. Trying to spread the sealer using the brush is a waste of time and leads to a bad result. Light coats. Clean-up. Dawn dish soap applied directly to the brush on both sides and then just a little water to let it suds up. Work the brush in a stainless steel pan back and forth really good. The start rinsing. Keep rinsing until thre are no more suds and the water runs clear. SHake the brush and let dry. Do that and just slightly beding the bristles before next use is like a new brush. Prep, prep, prep. You only stain-seal once every few years, don't skimp on the prep.
A**W
Not happy & returned
Had the worst possible experience with this. Follow the directions to a T. Applied the second coat as well, hoping to not have to cover the deck for 5-10 years.. It’s been months since the application. But after a rain, there’s this white milky substance on the top that comes out. If in the sun on a hot day, the product is extremely sticky as you’re walking, and if you have sandals on or sliding shoes, the shoes actually are like stuck in this goo. I did return the product. I did get my money back. But the company said spray the deck with water a couple times a day. It needs to cure. But if it’s a hot sunny day, and it has been at least two months, it just is a gooey sticky mess. So very disappointed. But at least the company gave us back our money, but I think the deck is ruined. And we did all this work to prep the deck and then coat the deck and it’s an absolute mess. Like I said, we got our money back. But on a cool day or not overly warm day, you might not stick to the deck. But on a hot day, it’s just like someone put glue all over the deck and you walk through it and just stick to it. We followed the instructions as directed and the second coat. Very sorry that we have nothing but a mess to deal with now and not even sure what to do. Since they gave us back our money, I’m not sure what else can be done. But will probably have to sand down the whole deck and apply some other product so that it’s water sealed. But I won’t be buying this again.
M**G
Looks fresh and new
Im in central FL and had this playhouse in the elements for maybe 1 week with heavy rain twice. After leaving it to dry it really dried out the cedar. Always kept it covered and only 6 months old. Glad I sealed it because it did not come sealed. This was easy to use and not messy. A little runny but worked well with a regular brush. Was able to get 2 coats on quickly since it dried fast. Dried very smooth, no problems with bubbling unless I was trying to get in the small spots and they would brush right off after a few minutes. Finish is smooth, hope this lasts. Great price and value compared to others.
D**Y
One of the best products I found for water proofing wood. Just amazing. And super easy to apply.
C**N
excellent produit je l'utilise aussi avec des objets de bois pour la douche
A**I
I wasn't able to use the product because it was separated and unspreadable. It's probable due to wrong storage procedure but I had to return it.
H**Y
It isn't cheap but far less expensive than rebuilding or repairing my sea side deck. As an 80 year old when I say that it is easy to apply, it must be super easy. The twenty minute drying time between coats is a real boon; by the time you get to the end of the project with the first coat, you can immediately start applying the second without doing a clean-up. The salt ocean air and the rain from the Japanese current are tough on wood so a marine finish is the way to go.
J**.
Used it this week on logs I had harvested from the sea at our cottage; so they are dried out and ready to use as fence posts, The 4" & 5" diameter (6'00" long) logs are now 2'00" into the ground where I hope this coating will last for another 30 years. The ones I replaced I had treated with creosote - now now available unfortunately, and was about 10% of the cost of this stuff ! I'm frankly not fully convinced that this stuff penetrated the wood in the way that creosote does. But I am 91 and probably wont know how long it does last !
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