--- product_id: 25229153 title: "Thompsons Water Seal 21801 1-Gallon Clear Waterproofed Plus Clear Wood Protector" brand: "thompson's" price: "197267CFA" currency: XOF in_stock: true reviews_count: 13 category: "Thompson's" url: https://www.desertcart.sn/products/25229153-thompsons-water-seal-21801-1-gallon-clear-waterproofed-plus-clear store_origin: SN region: Senegal --- # Dries in 48 hours 300 sq.ft. coverage/gallon Clear natural wood finish Thompsons Water Seal 21801 1-Gallon Clear Waterproofed Plus Clear Wood Protector **Brand:** thompson's **Price:** 197267CFA **Availability:** ✅ In Stock ## Summary > 💧 Seal the deal with crystal-clear protection that lasts! ## 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?** 197267CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/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 - • **Fast-Drying Formula:** Ready for the elements in just 48 hours, adapting to temperature and humidity. - • **Effortless Application:** Brush, roll, spray, or dip—flexible methods for flawless, even coverage every time. - • **Generous 1-Gallon Supply:** Covers up to 300 sq. ft. per gallon—perfect for large decks, fences, and outdoor furniture. - • **Invisible Beauty Enhancer:** Clear formula preserves and highlights natural wood grain without altering appearance. - • **Ultimate Waterproof Shield:** Advanced waterseal tech protects wood from water damage and extends outdoor life. ## Overview Thompsons Water Seal 21801 is a 1-gallon clear wood protector designed for exterior use, offering superior waterproofing that covers up to 300 sq. ft. per gallon. Its versatile application methods and fast 48-hour drying time make it ideal for decks, fences, and outdoor furniture, preserving the natural beauty of wood with a transparent finish. ## Description Protect and enhance your exterior wood surfaces with this clear, natural/unfinished finish wood sealer, designed for long-lasting waterproofing and durability. Manufactured by Thompson's, this 1-gal. solution is ideal for decks, fences, and outdoor furniture, providing a transparent barrier that helps prevent water damage, warping, and cracking. The easy-to-apply formula can be brushed, rolled, dipped, or sprayed for even coverage, and dries within 48 hours depending on temperature and humidity. With a package weight of 3.57 kg and dimensions of 10.3 in. high, 6.75 in. long, and 7.83 in. wide, this product is convenient to store and handle. No batteries are required, and each package contains four 128 fl. oz. units, making it suitable for large projects. For best results, clean and dry the wood before application, and follow the recommended number of coats. This waterproof wood sealant acts as a reliable wood water sealer clear, offering superior protection while maintaining the natural beauty of your wood surfaces. Review: Excellent... - Excellent...Fantastic...Superb... Review: The Best - You can't go wrong using Thompson, High quality product. Recommended ## Features - SUPERIOR WATERPROOF PROTECTION: Shields wood surfaces with a clear finish using advanced waterseal wood protector technology. Helps prevent water damage and extends wood life outdoors. - EASY APPLICATION PROCESS: Apply with brush, roller, sprayer, or dipping method for even coverage. Dries in 48 hours depending on temperature, humidity, and wood type. - IDEAL FOR EXTERIOR WOOD: Designed for decks, fences, and outdoor furniture. This waterproof wood sealant is perfect for protecting natural or unfinished wood surfaces. - GENEROUS 1 GALLON SIZE: Each package contains 128 fl oz, providing ample coverage for large projects. Convenient for multiple applications or treating several wood surfaces. - CLEAR NATURAL FINISH: Leaves wood looking natural and transparent without altering its appearance. The thompson water sealer clear formula enhances wood grain and beauty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00GP4TJ9I | | Base Material | wood-based | | Best Sellers Rank | #273,565 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #448 in Household Stains | | Brand Name | Thompson's | | Coating Description | Waterproof | | Color | Clear | | Compatible Material | Wood | | Coverage | covers up to 300 sq. ft. per gallon | | Customer Reviews | 4.5 4.5 out of 5 stars (331) | | Finish Types | Natural/Unfinished | | Item Dimensions | 6.75 x 7.83 x 10.3 inches | | Liquid Volume | 128 Fluid Ounces | | Manufacturer | THOMPSONS WATERSEAL | | Material Type | Wood | | Model Name | TH.021801-16 | | Model Number | 21801 | | Recommended Uses For Product | exterior | | Surface Recommendation | Wood | | UPC | 032053218019 | | Unit Count | 128 Fluid Ounces | ## Product Details - **Brand:** Thompson's - **Color:** Clear - **Material:** Wood - **Model Name:** TH.021801-16 - **Surface Recommendation:** Wood ## 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent... *by A***J on February 11, 2026* Excellent...Fantastic...Superb... ### ⭐⭐⭐⭐⭐ The Best *by R***A on June 27, 2023* You can't go wrong using Thompson, High quality product. Recommended ### ⭐⭐⭐⭐ Good sealant *by P***N on June 15, 2025* The best sealant that I've tried. This said, where applicable I prefer to use urethane lacquer, since it looks much better. ## Frequently Bought Together - Thompsons Water Seal 21801 1-Gallon Clear Waterproofed Plus Clear Wood Protector - Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement - Linzer 3121 0400 Stain Waterproofing Brush, 4 in.,Brown,WM 3121-0400 --- ## 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://www.desertcart.sn/products/25229153-thompsons-water-seal-21801-1-gallon-clear-waterproofed-plus-clear](https://www.desertcart.sn/products/25229153-thompsons-water-seal-21801-1-gallon-clear-waterproofed-plus-clear) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-05*