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🪵 Seal your style with science — protect wood like a pro!
SEAL-ONCE Nano+Poly Wood Sealer and Waterproofer in Bronze Cedar is a premium, water-based polyurethane finish that penetrates deeply using advanced nanotechnology to create a durable, breathable, and UV-stable barrier. This ultra-low VOC, non-toxic formula is ideal for protecting outdoor wood surfaces such as decks, fences, and furniture, enhancing natural wood beauty while providing long-lasting waterproof protection with easy application and cleanup.












| ASIN | B087YRCZ32 |
| Best Sellers Rank | #7,263 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #52 in Household Stains |
| Brand | Seal-Once |
| Brand Name | Seal-Once |
| Color | Bronze Cedar |
| Compatible Material | Wood |
| Customer Reviews | 4.3 out of 5 stars 1,491 Reviews |
| Item Dimensions | 10 x 4 x 10 inches |
| Item Form | Liquid |
| Item Weight | 9 Pounds |
| Item dimensions L x W x H | 10 x 4 x 10 inches |
| Manufacturer | UC Coatings |
| Material | Polyurethane |
| Material Type | Polyurethane |
| Model | S07507 |
| Part Number | S07507 |
| Style | Protection |
| Style Name | Protection |
| Surface Recommendation | Furniture,Siding,Wood |
| UPC | 850009973009 |
| Unit Count | 128 Fluid Ounces |
| Water Resistance Level | Water Resistant |
W**S
Great product, needs packaged better
Works very well, although they need to start packaging these better one was damaged in shipping and leaked all over the place. Make sure you stir well. Mine had some serious settling.
S**T
Easy to apply but read the directions.
Amateur wood worker. teated lumber has issues with standard paints when the wood is new. Did some research that poly or resin were the best paint solution. Rebuilding the deck I built 25 years ago and one of the issues treated joists deteriorated. I determined I wasn't making that mistake 2x and settled on this product. I ordered the brown color. I applied with a brush but product well suited for a sprayer. Product absorbs quickly and you do want to follow with second coat so ensure your job is divided in the 15 minute time slots for second coat. Because these are joists I did not spend more than a light sanding before application. I really like how the brown tint came out on treated lumber and it appears to protect the wood well from moisture. The product is very easy to apply with a brush and goes a long ways in spite of the two coats. I highly recommend this product on treated wood, in my case I think it will do well as the poly really soaks into the wood. I suspect it will hold up very well, but only time will tell.
J**B
Yep
Very easy to apply and dries quickly. Used it on old treated lumber that I power washed and made into a boat dock. Water beads up and the color looks great. How long it last I don’t know.
M**R
Looks good so far...easy to brush on.
My deck is treated Southern Yellow Pine. The Seal Once Nano Poly was easy to apply. However, I did a lot of prep work to hopefully, ensure a long lasting finish. I opted for a waterbased finish for two reasons; 1. I have dogs and didn't want them getting into anything toxic. 2. I have dogs...and needed the deck to dry fairly quickly so they wouldn't have to stay locked in the house for more than necessary. I chose the Nano + Poly because of the UV inhibitors in the poly. I wanted to avoid pigment in my very unevenly grained boards. After installing all new treated decking, I let it dry / season for about 6 months. Then, I power washed the deck after using a deck restore cleaner and scrub brush. I let that dry for a day and followed up by knocking off the raised grain with a belt sander and 80 grit belt. After thoroughly sweeping the dust off, I applied the Seal Once plus Poly with a 4" brush. I flooded the surface of each board to get as much of the finish absorbed into the wood as possible, then brushed out the excess. I took care to get as much into any knotholes and checking cracks as I could, in order to prevent rot from starting in these vulnerable areas. It was a hot day and the Seal Once was dry to the touch, within an hour. I went back over most of the boards for a second coat per the instructions, while they were still damp. Even so, the material already started to bead up on itself. This was not a problem, as it brushed out fine and leveled itself. Still, that tells me that the second coat is more of a surface finish. I love the look of the natural, untinted finish. Hopefully, the poly will help keep the wood from turning gray too soon. The Seal Once Poly imparted a slightly deeper color than the plain wood and added a satin surface look. Coverage was about what I expected. My deck is just under 200 square feet. Once gallon just covers it with either one heavy or two light coats. Anyway, I'm happy with the result. I'm just hoping it lasts.
S**E
Quality and durability, looks amazing!!
I've used so many different stains and waterproofing and by far this is hands down the best ever. It may cost some money but you get what you pay for in this Nano stain and seal. Its amazing
B**K
Terrible consistency and only 1 of 3 gallons was right!
I've ordered 3 gallons so far. I'm using this to stain the wood deck of a utility trailer. The first gallon was perfect, pitch black and very stain like in terms of consistency. It poured out like water and turned the wood completely black which is what I bought it to do. After realizing I needed more to do a second and even a third coat, I ordered another gallon. This gallon was a much thicker consistency and appeared to be a bluish gray. It had the consistency of paint vs stain. It also did not apply dark at all, and had a gray tint which eventually turned into a dark gray stain. I thought this might just be a bad gallon. I ordered a second gallon which arrived today. The package was crushed and stain was leaking out all over the concrete. The Amazon driver clearly took a picture from an angle of the box that showed no damage. So about 1/4 of the gallon was lost due to leakage. I could instantly tell that the consistency in color was the same as the second gallon I purchased. It's gray blue and very thick compared to the first gallon. I'm very frustrated that I have a trailer taken apart that I can't finish until I get a gallon that is mixed correctly.
A**S
Good stuff, used on my trailer decking
Wow, I used this stuff to seal the deck on my trailer and really happy with how it turned out. I used the light brown and it is just a great color. The day before I applied the stain, I pressure washed the deck and then let it dry.
D**A
What happened to UV protection???
This is my fourth time getting this product. The first time I got it, it came with UV protection, which is rare for clear sealants. I LOVE how easy this is to apply, it soaks in like water and just works. I used the UV protection one on my tool shed 4 years ago and till today it hasn't grayed! But then I guess they took that off the shelf, because I thought I bought the same product and sprayed it on my cedar fence the same as my shed, but it's completely grayed now. Bottom line: easy to use, feels really natural and safe to use (no smell and you get a little latex layer on your skin that's easy to scrape off), complete protection from mold and rot, but will not prevent graying anymore. Yes, put the second coat on fast if you're going to. In my experience it hasn't needed multiple coats when you apply the first thick enough. Hey Seal-Once! Bring back the UV protection formula, it really worked and the natural alternatives out there are crazy expensive!
L**V
Wood sealer
Good wood sealer, but you need to cover it every year to maintain the condition of the wood.
R**T
Good stuff! Just apply evenly.
Not much to say but awesome product. Be aware, it dries pretty fast and requires you to apply evenly. Overlapping coats that have dried will be noticeable. So No “splash and Dash”! Lol
J**.
Works well
Fantastic product will continue to purchase
P**A
Longevity
The product was easy to apply, but one needs to be very aware of the 20-30 minute time between first and second coats. Break the deck area down into smaller sections the size that you can apply the first coat in the time period but an area that you will be able to fully reach in order to apply the second coat. I used a brush which allowed me to really work the product in real well to obtain the best penetration on the first coat. My deck is Western Red Cedar which is a very porous and absorbs well so I needed to make sure to apply enough on the first coat to ensure a full penetration seal. The next most critical thing is to keep the leading edge of your application live or you will get a line between the the application stages. I live in the interior of British Columbia in Canada. Winters are long, wet, snowy and cold. Summers are hot and dry. All products that I have used in the past never make it through a single season. I apply them in May - June and they are gone by the end of December. I always have to fully sand and refinish every spring. Claims for Seal-Once Nano + Poly suggest I should get multiple years of use with out refinishing. Only time will tell. I am very hopeful but the jury is still out, as I only just finished the sealing.
K**N
non penetrating
Seal once brushes on easy and does not change color of wood. What is most satisfying is that when it rains you can see the water just laying on the surface as it will not penetrate wood.
Trustpilot
1 month ago
3 weeks ago