--- product_id: 23682665 title: "NANO + POLY" brand: "seal-once" price: "EC$451" currency: XCD in_stock: true reviews_count: 13 category: "Seal Once" url: https://grenada.desertcart.com/products/23682665-nano-poly store_origin: GD region: Grenada --- # UV-stable, flexible waterproof barrier Water-based, eco-friendly formula Penetrates deep for long-lasting protection NANO + POLY **Brand:** seal-once **Price:** EC$451 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal smart, protect longer — your wood’s best defense starts here! ## Quick Answers - **What is this?** NANO + POLY by seal-once - **How much does it cost?** EC$451 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [grenada.desertcart.com](https://grenada.desertcart.com/products/23682665-nano-poly) ## Best For - seal-once enthusiasts ## Why This Product - Trusted seal-once brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Tint Options:** Customize your wood’s look with 9 semi-transparent colors, blending protection with style. - • **Ultra-Low VOC & Odorless:** Safe for your home, pets, and plants—breathe easy while protecting your wood. - • **Fast-Drying & Easy Cleanup:** No-fuss application with soap and water cleanup—perfect for busy pros. - • **10-Year Vertical Protection:** Industry-leading warranty ensures your wood stays safeguarded for a decade. - • **Deep Penetration, Not Just Surface:** Creates a durable shield beneath the wood surface for unmatched water resistance. ## Overview Seal-Once Nano+Poly Wood Sealer is a premium, water-based, low-VOC wood protector that penetrates deeply to form a flexible, UV-stable waterproof barrier. Ideal for decks, fences, and log homes, it offers up to 10 years of vertical surface protection with easy application and cleanup, plus customizable tint options for a stylish finish. ## Description Buy Seal-Once Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes: Everything Else - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: I love, love, love this stuff - I stumbled across this product as I was researching gazebo kits to buy, and thankfully another desertcart purchaser mentioned this product in their comments and sent me off in the direction to research it too. VERY glad I did! So far I've sealed two cedar chaise lounges, a small gazebo, a larger pergola, and numerous cedar trellises with the Light Brown color, and an outdoor TV cabinet & subwoofer cabinet with the Mahogany color. (See photo.) The color differences between the gazebo on the left and the pergola on the right is due to the gazebo starting off as a natural cedar color, and the pergola already being lightly colored brown when I started. The TV and subwoofer boxes were also natural cedar when I started, with Mahogany applied. In both cases, the consistency of color was excellent, ease of use the same, and cleanup was a breeze. I really don't understand the bad reviews of this product, and I'm entirely willing to write off any negative reviews to user error. I'm on my third gallon across three deliveries, and although the cans are shipped with metal retainers to keep the lid on, I did have one that had a very small leak on it. (It was tiny, but it was a leak.) Like any product of this type, surface prep is CRITICAL to successful results. In my case I had it very easy because I had new, clean, untreated, and sanded cedar to work with, so my prep work was limited to just wiping down everything with mineral spirits. The product is very thin with an almost watery consistency, and it needs to be applied as such - in thin coats. I found that applying the first coat the thickest (but not THICK) so it soaks into the wood works best, and since the product dries so quickly, following that up shortly thereafter with very thin coats to even out the color and coverage. Subsequent coats definitely make a difference in coloring, and it will consistently darken with each coat. (See photo of TV box door panel, the left side is one coat of Mahogany, the right side is two coats.) There were no problems with the product adhering to any of my materials, but again I was working with new, clean wood that I prepped with mineral spirits. (I would guess that old wood would need to be sanded & degreased & cleaned first.) For me, I couldn't be happier with the results. The gazebo, (the first piece I ever used the product on), is on its second summer in Las Vegas and still looks as good as the day I applied it. Review: So far so good - Update- almost 2 years since it was done. It’s faded a bit and no longer has its rich color. It does seem to still be protecting, but has turned a sort of white dry weathered look. See before and two years after pictures. Hmm. Not sure what to expect. I’m not a wood person. August 2024 The first one got damaged in shipping. I was kind of frustrated because I needed it for the weekend. They also didn’t offer a replacement until I initiated it. The second one came. It went a long way and was easy to apply. I first used a hot dog roller on my redwood gate. I used clear. It didn’t seem to be too yellow as some have said. I applied one side in the direct sun and in about 95* weather with no issues. I purposely tried to apply it differently in some areas to see if I could get it mess up. No matter what I did I couldn’t duplicate any of the complaints. I did a second coat with the roller and a third coat with a weed sprayer that you pump up. Runs and everything dried clear and you couldn’t tell. Overall very happy and looks great. Hope it lasts and it will be an A+. I live in Ca and it’s in the sun. ## Features - WATER-BASED WOOD FINISH: Our sealant provides top-notch protection against wear and tear in high traffic areas. It's odorless and suitable for use on wood siding, log homes, swing sets, outdoor furniture, wooden deck and fence, and more - PENETRATING WOOD SEALANT: Unlike many sealers that only form a topcoat, our protector penetrates below the surface to create a long-lasting, water-resistant shield around the wood. It helps protect against the elements - ULTRA-LOW VOC FLOOR SEALER: Our premium gloss is ultra-low VOC and enhances the extended life of your exterior flooring. The sealant can be safely applied around your home, landscaping, vegetation, or over any water area - WATERPROOF SEALER: Ditch the oil-based sealers and choose a UV-stable coating option. Our fast-drying liquid creates a flexible, breathable barrier and provides a no-fuss, easy clean-up with soap and water, as it allows the wood to grey naturally - NON-TOXIC WOOD PROTECTION: Our user-friendly wood sealers and stains are an effective way to protect your lumber against water damage. When you use Seal-Once, you have the satisfaction of knowing our products will not harm pets, plants, or people - LONG-LASTING WARRANTY COVERAGE: This wood sealer is warranted to protect against water accumulation for up to 10 years on vertical surfaces and 6 years on horizontal surfaces, providing reliable long-term protection - VERSATILE COLOR OPTIONS: Can be tinted and used as wood stain or finish in 9 semi-transparent color tints including Coastal Gray, Black, Bronze Cedar, Brown, Cedar, Light Brown, Mahogany, Natural, Redwood. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B015C8AC1Q | | Best Sellers Rank | #8,694 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #63 in Hardware Sealers | | Brand | Seal-Once | | Brand Name | Seal-Once | | Color | Clear | | Compatible Material | Wood | | Customer Reviews | 4.2 out of 5 stars 1,566 Reviews | | Item Dimensions | 7 x 7 x 9 inches | | Item Form | Liquid | | Item Highlight | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes | | Item Weight | 8.7 pounds | | Item dimensions L x W x H | 7 x 7 x 9 inches | | Manufacturer | U-C Coatings | | Material | Wood | | Material Type | Wood | | Model | SOP 500G | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | SO7500 | | Style | Protection | | Style Name | Protection | | Surface Recommendation | Floor,Furniture,Siding,Wood | | UPC | 854734005042 | | Unit Count | 128 Fluid Ounces | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Seal-Once - **Item Weight:** 8.7 pounds - **Item dimensions L x W x H:** 7 x 7 x 9 inches - **Material:** Wood - **Style:** Protection ## Images ![NANO + POLY - Image 1](https://m.media-amazon.com/images/I/81wAqrTQlgL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: do you need to sand the wood first to make it smooth before applying the sealer?** A: Sanding exterior wood "smooth" is a very bad idea. Exterior wood needs to be sanded to open up the pores of the wood for deeper penetration. Sand with 80 grit sandpaper, nothing finer. Most times, cleaning with Seal-Once All Wood Cleaner would be a better choice. It would also depend on the type of wood and the project.......... siding or deck, exterior furniture? Call us. **Q: What is the difference in the Nano+Poly and the Marine?** A: I believe that the marina stain is has a special formula for freshwater and saltwater **Q: Should i use wood putty/filler before sealing or after sealing by seal-once nano+poly?** A: Use a top-quality name-brand stainable/paintable outdoor (or interior-exterior) wood filler of genuine wood fibers that will provide expansion and contraction with the surrounding wood. Fill no more than 1/8th to 1/4” per layered application until flush with the surrounding surface--allow ample time for each layer to cure. Sand top layer flush. If choosing to stain, do so next to match if surrounding hue. After the final stain coat dries, apply 1-3 liberal coats of wood hardener, allowing it to dry between each application. If panting, skip stain and then paint over the top coat of dried wood hardener. It should last for the life of the wood in most cases. **Q: Can this be applied with a sprayer? thanks** A: Yes, but you must immediately back brush. Brush the area that you just sprayed. Apply the second coat while the first coat is still wet. Within 5-15 minutes. ## Customer Reviews ### ⭐⭐⭐⭐⭐ I love, love, love this stuff *by R***E on July 7, 2026* I stumbled across this product as I was researching gazebo kits to buy, and thankfully another Amazon purchaser mentioned this product in their comments and sent me off in the direction to research it too. VERY glad I did! So far I've sealed two cedar chaise lounges, a small gazebo, a larger pergola, and numerous cedar trellises with the Light Brown color, and an outdoor TV cabinet & subwoofer cabinet with the Mahogany color. (See photo.) The color differences between the gazebo on the left and the pergola on the right is due to the gazebo starting off as a natural cedar color, and the pergola already being lightly colored brown when I started. The TV and subwoofer boxes were also natural cedar when I started, with Mahogany applied. In both cases, the consistency of color was excellent, ease of use the same, and cleanup was a breeze. I really don't understand the bad reviews of this product, and I'm entirely willing to write off any negative reviews to user error. I'm on my third gallon across three deliveries, and although the cans are shipped with metal retainers to keep the lid on, I did have one that had a very small leak on it. (It was tiny, but it was a leak.) Like any product of this type, surface prep is CRITICAL to successful results. In my case I had it very easy because I had new, clean, untreated, and sanded cedar to work with, so my prep work was limited to just wiping down everything with mineral spirits. The product is very thin with an almost watery consistency, and it needs to be applied as such - in thin coats. I found that applying the first coat the thickest (but not THICK) so it soaks into the wood works best, and since the product dries so quickly, following that up shortly thereafter with very thin coats to even out the color and coverage. Subsequent coats definitely make a difference in coloring, and it will consistently darken with each coat. (See photo of TV box door panel, the left side is one coat of Mahogany, the right side is two coats.) There were no problems with the product adhering to any of my materials, but again I was working with new, clean wood that I prepped with mineral spirits. (I would guess that old wood would need to be sanded & degreased & cleaned first.) For me, I couldn't be happier with the results. The gazebo, (the first piece I ever used the product on), is on its second summer in Las Vegas and still looks as good as the day I applied it. ### ⭐⭐⭐⭐⭐ So far so good *by D***Z on August 4, 2024* Update- almost 2 years since it was done. It’s faded a bit and no longer has its rich color. It does seem to still be protecting, but has turned a sort of white dry weathered look. See before and two years after pictures. Hmm. Not sure what to expect. I’m not a wood person. August 2024 The first one got damaged in shipping. I was kind of frustrated because I needed it for the weekend. They also didn’t offer a replacement until I initiated it. The second one came. It went a long way and was easy to apply. I first used a hot dog roller on my redwood gate. I used clear. It didn’t seem to be too yellow as some have said. I applied one side in the direct sun and in about 95* weather with no issues. I purposely tried to apply it differently in some areas to see if I could get it mess up. No matter what I did I couldn’t duplicate any of the complaints. I did a second coat with the roller and a third coat with a weed sprayer that you pump up. Runs and everything dried clear and you couldn’t tell. Overall very happy and looks great. Hope it lasts and it will be an A+. I live in Ca and it’s in the sun. ### ⭐⭐⭐⭐⭐ Very Pleased! *by P***3 on November 12, 2020* 1/2023 - Update I didn't remember to post in 2022, but I wanted to add a couple of pictures. I will say that am not sure if the product is going to hold up through six years (horizontal surfaces like the deck) as it's going on 3 years and I feel like I am seeing wearing I didn't expect. However, I am not a professional. I applied it with a brush and, perhaps, I didn't apply it as well as I should have. I am not comfortable blaming the product alone. Some sections seem to be holding up better than others. Currently, the furniture is covered up, but most of it seems to be holding up better than certain areas of the deck. It should be noted that most of the deck is probably close to 30 years old if not older. That may be a factor as well. 6/2021 - Update I originally posted last November after treating wooden deck furniture. This June, I treated the deck after having it power washed. Still thrilled with the product and the way it's working. I am adding 2 additional pictures. The first is after the deck was power washed and the second is after I treated/painted it with this product. You can even see beaded water on the deck 🙂 11/2020 I am posting a review of this product along with some pictures. I will plan on updating it each year as the product is said to last approximately 6 on horizontal surfaces and 10 years on vertical surfaces. First, let me say that I wasn't exactly sure what to expect. When the product arrived I found it to be somewhat thin. When I realized it was water based, it made more sense that it wasn't very thick. That being said, I have been very pleased thus far with the results. I did the application with a brush. As you will see in the pictures, it does what it needs to do when it comes to rain. I also wasn't sure what color to get. I picked the bronze cedar and when used on new wood, that is the color you get. It is beautiful! You will see the color is not quite the same (seems a bit darker depending on the light) when used on wood that has already been treated with a previous product (I don't recall what product or color was on the furniture that I re-treated) It doesn't bother me, though, that the color isn't the same. Now for the pictures. The picture of the deck boards that I treated show the true color. I have not yet treated the rest of the deck as I want to make sure to power wash and clean it first and won't be able to do that till spring. When you see the picture of the boards with the water beaded on them and then see the boards around it don't have beaded water, it's because the rest of the deck has not yet been treated. The pictures of the furniture show the "before" of one of the small end tables and the "after." It also shows an "after" of another chair and table set and big picnic table. Mind you, the furniture wasn't in the best of condition. The last time it was treated was several years ago. I am very pleased with the way this product has worked so far. If you do happen to see an area that was missed, it is NOT the fault of the product, but of the person doing the application (me!) I look forward to treating the rest of the deck (and furniture) in the spring with this excellent product! ## Frequently Bought Together - Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Clear - Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement - Double Thick Chip Paint Brush - Wood Stain Brushes for Painting Walls and Fence Staining - Wooden Handle Masonry Paintbrush for Varnish, Paste, Gesso and Limewash (4 inch) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://grenada.desertcart.com/products/23682665-nano-poly](https://grenada.desertcart.com/products/23682665-nano-poly) --- *Product available on Desertcart Grenada* *Store origin: GD* *Last updated: 2026-10-12*