--- product_id: 2392221 title: "RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft" brand: "radonseal" price: "¥58581" currency: JPY in_stock: true category: "Radon Seal" url: https://www.desertcart.jp/products/2392221-radonseal-complete-diy-foundation-crack-repair-kit-urethane-sealant-10 store_origin: JP region: Japan --- # Waterproof urethane sealant Drill-free injection tech Radon & gas barrier protection RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft **Brand:** radonseal **Price:** ¥58581 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal smart, live safe—DIY foundation defense made effortless! ## Quick Answers - **What is this?** RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft by radonseal - **How much does it cost?** ¥58581 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/2392221-radonseal-complete-diy-foundation-crack-repair-kit-urethane-sealant-10) ## Best For - radonseal enthusiasts ## Why This Product - Trusted radonseal brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Interior-Only Solution:** Save thousands by repairing from inside your basement—no costly exterior excavation or landscaping disruption. - • **Dual Protection Barrier:** Shield your home from water intrusion and harmful radon gas simultaneously—peace of mind in one kit. - • **User-Friendly Application:** Inject the low-viscosity urethane using any standard caulking gun—DIY made simple for busy professionals. - • **Effortless Drill-Free Repair:** Fix foundation cracks without noisy, invasive drilling—preserve your home's integrity with ease. - • **Permanent Hairline Crack Seal:** Stop water leaks and prevent damage by sealing even the tiniest cracks with advanced expanding foam. ## Overview RadonSeal Complete DIY Foundation Crack Repair Kit offers a drill-free, 2-part urethane foam injection system that permanently seals basement wall cracks up to 0.5 inches. Designed for interior use, it prevents water leaks and blocks radon and soil gases, curing fully in 24 hours. Ideal for poured concrete walls, this waterproof, high-tensile-strength solution empowers homeowners to protect their foundation without costly excavation. ## Description RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft | Low-Viscosity Urethane Injection for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free - Wall Surface Repair Products - desertcart.com ## Features - Drill-Free Injection: Repair basement wall cracks effortlessly without drilling, ensuring minimal disruption to your home's structure. - Simple Application: Use a standard caulking gun to inject the low-viscosity, 2-component urethane, making the process accessible for any homeowner. - Effective Hairline Crack Repair: Seal even the smallest cracks permanently with the specialized urethane, preventing further water seepage and damage. - Interior Repair Advantage: Save on costly excavation by repairing cracks from inside your basement, maintaining exterior aesthetics and structural integrity. - Comprehensive Protection: This solution not only protects against water but also acts as a barrier against radon and soil gases, safeguarding your basement environment. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B006OP30L6 | | Best Sellers Rank | #32,894 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #136 in Wall Surface Repair Products | | Brand Name | RadonSeal | | Color | Grey | | Customer Reviews | 4.6 4.6 out of 5 stars (1,172) | | Full Cure Time | 24 hours | | Included Components | repair kit | | Item Form | Foam | | Liquid Volume | 22 fluid ounces | | Manufacturer | Novion | | Material Type | 2-Part Expanding Urethane Foam | | Maximum Gap Fill | 0.5 inches | | Model | 301 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 301 | | Surface Recommendation | Poured Concrete Walls | | Tensile Strength | 180 psi | | UPC | 856255006058 | | Unit Count | 1 Count | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** RadonSeal - **Color:** Grey - **Full Cure Time:** 24 hours - **Item Form:** Foam - **Liquid Volume:** 22 fluid ounces ## Images ![RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft - Image 1](https://m.media-amazon.com/images/I/71kR5oSnXQL.jpg) ![RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft - Image 2](https://m.media-amazon.com/images/I/51RZ3Ltn6zL.jpg) ![RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft - Image 3](https://m.media-amazon.com/images/I/513vTLMCoJL.jpg) ![RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft - Image 4](https://m.media-amazon.com/images/I/51kairHKUBL.jpg) ![RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 10 Ft - Image 5](https://m.media-amazon.com/images/I/51VWS+CKWcL.jpg) ## Questions & Answers **Q: Is this strong enough to "push back" toward the exterior of the wall? ie, is it better than the products where you drill behind the crack?** A: Ben - I am not an expert by any means - but I can tell you my experience. This is a low pressure product - meaning that the "pressure" comes from VERY slow use of a caulk gun. That being said - this is an expanding foam type of product - it goes in as a very thin liquid and once activated foams and flls the crack - even hair line ones. The directions say that as long as you are below grade you do not have to seal the outside - well apparently the very top of our crack was above grade - when I went outside I could see the product had foamed to the outside. This means it went from a small hailine crack - through the wall - all the way to the exterior wall. I used this product to fill two areas with cracks that had leaked for a long time. It's been a few months now - and lots of rain - and we are still very dry. No drilling was required. I hope this helps. **Q: Can u use this product will water actively coming out of the wall or does it need to be dry? Once the solution is applied. do u need to wet the wa** A: Foundation cracks cannot be repair while actively leaking. The surface sealer and port adhesive requires a dry surface to properly cure and adhere. The injection foam can be used when the crack is wet. In fact, part if the injection process includes injecting water to assist in the foam expansion. **Q: What is the size of the port adhesive containers? eg ounces** A: Each jar is 8-ounces or .25 quarts. **Q: Have several cracks, some are substantial size, how much surface area does this kit cover?** A: ONE (1) RadonSeal® DIY Crack Injection Kit roughly fills 8-10 linear feet of cracks in poured concrete walls, from hairline to 1/2" wide. If there is a large void behind the wall or the urethane wastefully runs down towards the footings, it can consume more polyurethane foam, typically in the lowest injection port. You can order additional cartridges by calling RadonSeal®. Twenty-foot kits are available on Amazon®. ## Frequently Bought Together - RadonSeal Complete DIY Foundation Crack Repair Kit - 10 Ft - Low-Viscosity Urethane Injection Sealant for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free Filler - Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black, 5 Gallon - Applied Technologies 6-10' Fast Set Concrete Foundation Crack Repair Kit - Hydra Stop 300 Polyurethane Foam for Wall Cracks, Prevents Basement Flooding, Quick-Setting Waterproof Sealing Solution --- ## 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.jp/products/2392221-radonseal-complete-diy-foundation-crack-repair-kit-urethane-sealant-10](https://www.desertcart.jp/products/2392221-radonseal-complete-diy-foundation-crack-repair-kit-urethane-sealant-10) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-21*