---
product_id: 23682665
title: "Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes"
brand: "seal-once"
price: "744.93 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Seal Once"
url: https://www.desertcart.tn/products/23682665-nano-poly-wood-sealer-and-waterproofer-clear-1-gallon-polyurethane
store_origin: TN
region: Tunisia
---

# Ultra-low VOC, eco-friendly & non-toxic Penetrates deep for lasting water resistance 10-year vertical surface waterproof warranty Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes

**Brand:** seal-once
**Price:** 744.93 DT
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smart, protect longer — your wood’s best defense against time and elements!

## Quick Answers

- **What is this?** Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes by seal-once
- **How much does it cost?** 744.93 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/23682665-nano-poly-wood-sealer-and-waterproofer-clear-1-gallon-polyurethane)

## 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 & Stylish:** Available in 9 semi-transparent tints to customize your wood’s natural beauty with a professional finish.
- • **Eco-Conscious & Safe:** Ultra-low VOC formula ensures a non-toxic finish safe for pets, plants, and your family.
- • **Long-Term Confidence:** Backed by up to 10 years of waterproof protection on vertical surfaces and 6 years on horizontal ones.
- • **Effortless Maintenance:** Fast-drying, flexible, and breathable coating that cleans up easily with soap and water.
- • **Deep Penetration, Not Just Surface:** Creates a durable, water-resistant shield beneath the wood surface for unmatched protection.

## Overview

Seal-Once Nano+Poly Wood Sealer and Waterproofer is a premium water-based, ultra-low VOC wood finish that penetrates deeply to provide a flexible, breathable, and waterproof barrier. Suitable for decks, fences, log homes, and outdoor furniture, it offers up to 10 years of protection on vertical surfaces. This non-toxic, fast-drying sealer enhances wood’s natural look with optional tinting and ensures easy cleanup, making it the go-to choice for professionals and homeowners seeking durable, eco-friendly wood protection.

## 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: Seals and protects outdoor work tables. Attractive and easy to clean. - Purchased both the clear and the dark cedar. Both worked well on some wood work table I have outdoors under cover but where they receive plenty of sunlight. I used two coats each of the clear on the sanded plywood tops and the dark cedar on the structure and legs underneath. Goes on easily, seals and protects. Appears to be entirely waterproof. Seems to be holding up very well so far over the course of several months. The dark cedar staining was a little hard to prevent being streaky but not too bad and is an attractive rich color. I really like the satin surface quality. The tables are easy to wipe down and clean. I've been using them primarily for clay work.
Review: Excellent sealing waterproof - Well, now we talking about sealing...I have a little deck with stairs, sturdy lumber natural colored. My wife complain about the color are not much with anything, so she want me to make it black, with white railing around. Thus, after researching a little bit I went for this sealing. Best sealing I ever see around!. I applied two times, and a third just in case, but I don't know it really need it. The results were absolutely impressive!. After a rain you can see the drops just rest there, but without affect the lumber, like a piece of plastic sheet on the surface. Excellent!

## 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 | #4,196 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #30 in Hardware Sealers |
| Brand | Seal-Once |
| Brand Name | Seal-Once |
| Color | Clear |
| Compatible Material | Wood |
| Customer Reviews | 4.3 out of 5 stars 1,518 Reviews |
| Item Dimensions | 7 x 7 x 9 inches |
| Item Form | Liquid |
| 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 |
| 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:** 8.73 Pounds
- **Item dimensions L x W x H:** 7 x 7 x 9 inches
- **Material:** Wood
- **Style:** Protection

## Images

![Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes - 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

### ⭐⭐⭐⭐⭐ Seals and protects outdoor work tables. Attractive and easy to clean.
*by E***. on July 15, 2026*

Purchased both the clear and the dark cedar. Both worked well on some wood work table I have outdoors under cover but where they receive plenty of sunlight. I used two coats each of the clear on the sanded plywood tops and the dark cedar on the structure and legs underneath. Goes on easily, seals and protects. Appears to be entirely waterproof. Seems to be holding up very well so far over the course of several months. The dark cedar staining was a little hard to prevent being streaky but not too bad and is an attractive rich color. I really like the satin surface quality. The tables are easy to wipe down and clean. I've been using them primarily for clay work.

### ⭐⭐⭐⭐⭐ Excellent sealing waterproof
*by E***O on July 1, 2026*

Well, now we talking about sealing...I have a little deck with stairs, sturdy lumber natural colored. My wife complain about the color are not much with anything, so she want me to make it black, with white railing around. Thus, after researching a little bit I went for this sealing. Best sealing I ever see around!. I applied two times, and a third just in case, but I don't know it really need it. The results were absolutely impressive!. After a rain you can see the drops just rest there, but without affect the lumber, like a piece of plastic sheet on the surface. Excellent!

### ⭐⭐⭐⭐⭐ Do your research!
*by C***L on July 19, 2026*

If you spend any time online researching deck sealants, this product will keep popping up. So, of course, I assumed it was paid advertisement. Off to forums I went, and there too, Seal Once was the recommended choice. This product is a lot thicker than competitors and was really pretty easy to apply. There was little splatter using a roller. No strong odor. It dried to the touch within an hour, but I left it overnight to be certain. The clear version did NOT stain our deck, but did add a low sheen ( which we like). The ONLY negative comment would be: in a couple places we got a bit sloppy and didnt notice. So, now when it rains, those spots turn white. Luckily its in a place that doesnt really stand out. I have not found any spots where the sealant has not adhered or worn off ( we applied this about 3 months ago now). Imo, worth every cent. Will definitely purchase again when needed.

## 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)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-06*