---
product_id: 25229153
title: "Thompsons Water Seal 21801 1-Gallon Clear Waterproofed Plus Clear Wood Protector"
brand: "thompson's"
price: "€ 109.78"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/25229153-thompsons-water-seal-21801-1-gallon-clear-waterproofed-plus-clear
store_origin: HR
region: Croatia
---

# VOC Compliant Wood Compatible Rainproof Thompsons Water Seal 21801 1-Gallon Clear Waterproofed Plus Clear Wood Protector

**Brand:** thompson's
**Price:** € 109.78
**Availability:** ✅ In Stock

## Summary

> 🌟 Seal the Deal with Thompson's Water Seal!

## Quick Answers

- **What is this?** Thompsons Water Seal 21801 1-Gallon Clear Waterproofed Plus Clear Wood Protector by thompson's
- **How much does it cost?** € 109.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/25229153-thompsons-water-seal-21801-1-gallon-clear-waterproofed-plus-clear)

## Best For

- thompson's enthusiasts

## Why This Product

- Trusted thompson's brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Low Odor Formula:** Enjoy a pleasant application experience without overwhelming fumes.
- • **Moisture Barrier:** Defend against rain and moisture with advanced waterproofing technology.
- • **Eco-Friendly Choice:** Feel good about your purchase with VOC compliant materials.
- • **Versatile Application:** Perfect for all your exterior wood needs, from decks to fences.
- • **Protect Your Investment:** Keep your wood surfaces looking pristine and protected from the elements.

## Overview

Thompson's Water Seal 21801 is a 1-gallon clear waterproof wood protector designed to shield your exterior wood surfaces from moisture and rain. With a low odor and VOC compliant formula, it ensures a safe and pleasant application while providing long-lasting protection.

## Description



## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Clear |
| Brand | Thompson's |
| Surface Recommendation | Wood |
| Material | Wood |
| Model Name | TH.021801-16 |
| Coating Description | Waterproof |
| Item dimensions L x W x H | 6.75 x 7.83 x 10.3 inches |
| Finish Type | Natural/Unfinished |
| Recommended Uses For Product | exterior |
| Liquid Volume | 128 Fluid Ounces |
| Number of Items | 4 |
| Manufacturer | THOMPSONS WATERSEAL |
| Unit Count | 128 Fluid Ounces |
| UPC | 032053218019 |
| Part Number | 21801 |
| Item Weight | 7.85 pounds |
| Product Dimensions | 6.75 x 7.83 x 10.3 inches |
| Item model number | 21801 |
| Is Discontinued By Manufacturer | No |
| Finish | Natural/Unfinished |
| Item Package Quantity | 1 |
| Coverage | covers up to 300 sq. ft. per gallon |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Color:** Clear
- **Brand:** Thompson's
- **Surface Recommendation:** Wood
- **Material:** Wood
- **Model Name:** TH.021801-16

## Images

![Thompsons Water Seal 21801 1-Gallon Clear Waterproofed Plus Clear Wood Protector - Image 1](https://m.media-amazon.com/images/I/81OjqEKVPQL.jpg)

## Questions & Answers

**Q: Can it be put on top of polyurethane?**
A: Don’t know BUT—- when I used this product on my finished board it never dried, and that was my work shop for three days temp 70 degrees, hate this product

**Q: I plan on using this on a wooden stool I have not assembled yet. Would you recommend applying this before I assemble the stool or after it’s put toge?**
A: I would do it after assembly if I was doing it.

**Q: Is this real oil based and if so, is this different in California than what can be purchased in other states? ?**
A: Thompson's® WaterSeal® Penetrating Timber Oil is an oil-based product that provides protection by penetrating into wood pores and sealing out water infiltration.

**Q: How long do kids need to stay off of playset after Thompson water seal is applied**
A: I was told about 48 hours. This is to allow the product to air dry completely outside.

## Frequently Bought Together

- Thompsons Water Seal 21801 1-Gallon Clear Waterproofed Plus Clear Wood Protector
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**Shop now:** [https://www.desertcart.hr/products/25229153-thompsons-water-seal-21801-1-gallon-clear-waterproofed-plus-clear](https://www.desertcart.hr/products/25229153-thompsons-water-seal-21801-1-gallon-clear-waterproofed-plus-clear)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-14*