--- product_id: 2392221 title: "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" brand: "radonseal" price: "₨6205" currency: SCR in_stock: true reviews_count: 13 category: "Radon Seal" url: https://www.desertcart.sc/products/2392221-complete-diy-foundation-crack-repair-kit-urethane-sealant-10-ft store_origin: SC region: Seychelles --- # Waterproof urethane sealant Drill-free injection tech Radon & soil gas barrier 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 **Brand:** radonseal **Price:** ₨6205 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal smart, live safe — the ultimate DIY foundation fix! ## Quick Answers - **What is this?** 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 by radonseal - **How much does it cost?** ₨6205 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/2392221-complete-diy-foundation-crack-repair-kit-urethane-sealant-10-ft) ## 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 exterior excavation required. - • **Dual Protection Barrier:** Shield your home from water intrusion and harmful radon gas simultaneously. - • **DIY-Friendly Application:** Inject low-viscosity urethane easily with any standard caulking gun—no pro needed. - • **Effortless Drill-Free Repair:** Fix foundation cracks without noisy drilling or structural hassle. - • **Permanent Hairline Crack Seal:** Stop water leaks and prevent damage by sealing even the tiniest cracks. ## Overview RadonSeal Complete DIY Foundation Crack Repair Kit offers a 10 ft supply of 2-part expanding urethane foam that permanently seals hairline cracks in poured concrete basement walls. Its drill-free injection system allows easy application with a standard caulking gun, curing fully in 24 hours to create a waterproof, radon-resistant barrier. Ideal for interior repairs, it prevents water leaks and soil gas infiltration without costly exterior 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 Review: Excellent repair kit, no way to improve on it - This kit is well-thought out, including from the crucial standpoint of safety (I write safety articles for trade magazines, and, yes, I wear both eye protection and hearing protection when operating a lawn mower). It comes with splash goggles and two pairs of protective gloves. They even tell you about the "trick" of putting on both pairs at the start of the job (something every person who works with paints and epoxies knows to do). The instructions are quite clear and easy to follow. I must admit I didn't quite follow, having gotten a little impatient with the first fill nozzle; instead of using low pressure and waiting as the video and the written instructions said to, I kept pumping. Oops, the stuff cam out that next hole a little too fast! Lesson learned, and easy enough to recover from. My big fear was I'd run out of the resin, but that didn't happen. This kit had exactly enough for the job. This did fix the leak. I waited until after several gully washers, including the worst mother of all rainstorms I have ever seen since living here, to write this review. The patch held up and no water came in. While this kit is pricey, it is worth its price. The savings over hiring a "professional firm" who likely will send a barely trained person to your home to do the job is huge. If you are careful about how you do your work, you will ensure the job is perfect and the leak will be permanently fixed; that's an advantage of this kit. However, I will state that if you're not the kind of person who has some craft capability (works with tools in any way), you probably should not tackle this job (or any other home repair job). The biggest part of any craft job is the preparation. That takes patience, methodology, and attention to detail; things you either learned from personal instruction or just don't get. If you don't have experience doing home repairs, car repairs, computer repairs or other sorts of "pay attention to what you're doing and take the time to do it right" hands-on work then don't attempt this job either. Hire a carpenter or your buddy who likes doing these sorts of things. The kit contains everything you need, except ventilation fans and a grease gun. If you're qualified to do this job, then you already have those things. These folks put a great deal of thought into this product, and that shows in many, many aspects. I can't think of any way to improve on this product. This job went so smoothly for me, I've let the neighbors know I'll be happy to fix their foundations if they need an assist. And, of course, I will insist that this kit be used. Review: Good stuff.... worked very well - UPDATE... I fixed the cracks a few months ago and we have had some heavy soaking rains. Not one drop of water has leaked from the cracks I repaired. The cracks have been leaking for 25 years and a little river would form in the basement from the leakage..... The basement is officially dry after 25 years.... I bought 2 of these kits to repair to basement wall cracks that have been leaking for over 25 years. The first crack was a major leaker and this kit completely stopped the water problem. On the first crack I had spaced the ports about 8 inches apart and I had somewhat of a harder time to get the material to flow out of the upper port. On the second crack I fixed, I placed the ports 6 inches apart and it was much easier to get the material to flow out of the upper port. Items that need change.. - The epoxy sticks in the second kit were thinner than the first kit, and they broke almost immediately when I tried to remove the epoxy out of the container. - The second container came with a wide spatula and the first kit came with a narrow spatula. The narrow spatula was easier to work with at getting the epoxy around the ports. - I didn't wear the rubber gloves on the first kit I used. I got the material on my hands and it took two weeks for the crack material to wear off my hands. Wear the gloves because this material sticks to your hands like concrete. It will not wash off, it needs to wear off. - I has gotten concerned when the tube only compressed half its length in the caulk gun.... I thought something was wrong. It turns out that the caulk tube has two chambers and it will only compress half its length in the caulk gun... This needs to be mentioned... -I had a 20+ year old caulk gun.... I opened the tube before I placed it in the caulk gun. When I tried to insert the crack repair tube in the caulk gun, the nozzle did not fit. I needed to pry open the end of the caulk gun before the tube nozzle would fit in the gun. Make sure that the cracker sealer tube fits in your caulk gun before you open it... The epoxy sticks very well to the basement wall.. I did chisel it off the wall but it does take some time.... I had several different with chisels and the narrow chisel worked better. Also if you hit the epoxy with a hammer.... the blow from the hammer will crack and loosen the epoxy and it will be a little easier to remove the epoxy from the wall. Just want to let you know that the concrete wall will be a little rough when you chisel away the epoxy. REMEMBER TO WEAR THE SAFETY GLASSES... PIECES OF CONCRETE AND EPOXY WILL FLY... I places some newspapers under the plastic bag to catch the excess material that fell on the floor... This made for a much cleaner job... The material does expand quite a bit and it completely filled the wall crack to the outside of the basement. With the way the material expands, I doubt if these cracks will ever leak again. I did flush the top crack with a spray bottle as they instructed... but I also flushed all the ports with plenty of water to remove any debris in the crack... Bottom line I was very impressed... If you hire someone to fix your cracks in the basement, expect to pay at least $350 bucks per crack... This kit does the same job for a lot less... MAKE SURE YOU TAKE YOUR TIME AND PREP THE WALL CORRECTLY AND FOLLOW THE INSTRUCTIONS AND WEAR THE GLOVES.. ## 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 | #28,981 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #129 in Wall Surface Repair Products | | Brand | RadonSeal | | Brand Name | RadonSeal | | Color | Grey | | Customer Reviews | 4.6 out of 5 stars 1,175 Reviews | | 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 ![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 - Image 1](https://m.media-amazon.com/images/I/71kR5oSnXQL.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®. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent repair kit, no way to improve on it *by M***A on July 10, 2015* This kit is well-thought out, including from the crucial standpoint of safety (I write safety articles for trade magazines, and, yes, I wear both eye protection and hearing protection when operating a lawn mower). It comes with splash goggles and two pairs of protective gloves. They even tell you about the "trick" of putting on both pairs at the start of the job (something every person who works with paints and epoxies knows to do). The instructions are quite clear and easy to follow. I must admit I didn't quite follow, having gotten a little impatient with the first fill nozzle; instead of using low pressure and waiting as the video and the written instructions said to, I kept pumping. Oops, the stuff cam out that next hole a little too fast! Lesson learned, and easy enough to recover from. My big fear was I'd run out of the resin, but that didn't happen. This kit had exactly enough for the job. This did fix the leak. I waited until after several gully washers, including the worst mother of all rainstorms I have ever seen since living here, to write this review. The patch held up and no water came in. While this kit is pricey, it is worth its price. The savings over hiring a "professional firm" who likely will send a barely trained person to your home to do the job is huge. If you are careful about how you do your work, you will ensure the job is perfect and the leak will be permanently fixed; that's an advantage of this kit. However, I will state that if you're not the kind of person who has some craft capability (works with tools in any way), you probably should not tackle this job (or any other home repair job). The biggest part of any craft job is the preparation. That takes patience, methodology, and attention to detail; things you either learned from personal instruction or just don't get. If you don't have experience doing home repairs, car repairs, computer repairs or other sorts of "pay attention to what you're doing and take the time to do it right" hands-on work then don't attempt this job either. Hire a carpenter or your buddy who likes doing these sorts of things. The kit contains everything you need, except ventilation fans and a grease gun. If you're qualified to do this job, then you already have those things. These folks put a great deal of thought into this product, and that shows in many, many aspects. I can't think of any way to improve on this product. This job went so smoothly for me, I've let the neighbors know I'll be happy to fix their foundations if they need an assist. And, of course, I will insist that this kit be used. ### ⭐⭐⭐⭐⭐ Good stuff.... worked very well *by M***C on April 25, 2016* UPDATE... I fixed the cracks a few months ago and we have had some heavy soaking rains. Not one drop of water has leaked from the cracks I repaired. The cracks have been leaking for 25 years and a little river would form in the basement from the leakage..... The basement is officially dry after 25 years.... I bought 2 of these kits to repair to basement wall cracks that have been leaking for over 25 years. The first crack was a major leaker and this kit completely stopped the water problem. On the first crack I had spaced the ports about 8 inches apart and I had somewhat of a harder time to get the material to flow out of the upper port. On the second crack I fixed, I placed the ports 6 inches apart and it was much easier to get the material to flow out of the upper port. Items that need change.. - The epoxy sticks in the second kit were thinner than the first kit, and they broke almost immediately when I tried to remove the epoxy out of the container. - The second container came with a wide spatula and the first kit came with a narrow spatula. The narrow spatula was easier to work with at getting the epoxy around the ports. - I didn't wear the rubber gloves on the first kit I used. I got the material on my hands and it took two weeks for the crack material to wear off my hands. Wear the gloves because this material sticks to your hands like concrete. It will not wash off, it needs to wear off. - I has gotten concerned when the tube only compressed half its length in the caulk gun.... I thought something was wrong. It turns out that the caulk tube has two chambers and it will only compress half its length in the caulk gun... This needs to be mentioned... -I had a 20+ year old caulk gun.... I opened the tube before I placed it in the caulk gun. When I tried to insert the crack repair tube in the caulk gun, the nozzle did not fit. I needed to pry open the end of the caulk gun before the tube nozzle would fit in the gun. Make sure that the cracker sealer tube fits in your caulk gun before you open it... The epoxy sticks very well to the basement wall.. I did chisel it off the wall but it does take some time.... I had several different with chisels and the narrow chisel worked better. Also if you hit the epoxy with a hammer.... the blow from the hammer will crack and loosen the epoxy and it will be a little easier to remove the epoxy from the wall. Just want to let you know that the concrete wall will be a little rough when you chisel away the epoxy. REMEMBER TO WEAR THE SAFETY GLASSES... PIECES OF CONCRETE AND EPOXY WILL FLY... I places some newspapers under the plastic bag to catch the excess material that fell on the floor... This made for a much cleaner job... The material does expand quite a bit and it completely filled the wall crack to the outside of the basement. With the way the material expands, I doubt if these cracks will ever leak again. I did flush the top crack with a spray bottle as they instructed... but I also flushed all the ports with plenty of water to remove any debris in the crack... Bottom line I was very impressed... If you hire someone to fix your cracks in the basement, expect to pay at least $350 bucks per crack... This kit does the same job for a lot less... MAKE SURE YOU TAKE YOUR TIME AND PREP THE WALL CORRECTLY AND FOLLOW THE INSTRUCTIONS AND WEAR THE GLOVES.. ### ⭐⭐⭐⭐⭐ Easy to use, and saves from costly foundation repair. *by C***H on November 11, 2019* I had two cracks in my foundation, both approximately 6' in length, both leaked bad enough to leave a large spreading pool of water after moderate-to-heavy rains. At first glance, the price of this kit seemed a little steep, but when compared to what it would cost to have a contractor come in, it was a no brainer. I purchased two kits, and had plenty of left over material. I do believe this will sufficiently fill a 10' linear crack as advertised. The kit is all-inclusive, even includes eye protection and a wire brush! This was designed for the DIY'er who may not have their own tools. Directions are clearly written, with corresponding pictures. The two-part adhesive used to attach the ports and seal the crack is messy to deal with. Use the gloves, and ensure you have a few extra stir sticks available - whether the thick tongue suppressors, or paint stir sticks. Anything smaller would likely break while trying to mix the two parts. **IMPORTANT** The two part adhesive hardens quickly. Do not mix too much at once. Start with a dollop of each Part A and Part B, mix, and see how far that gets you. Adjust accordingly and continue to attach each port and seal the crack. **Recommendation** Follow the recommendation in the directions and heat the two part expanding foam canisters in hot water for 20 minutes before applying. This thins the liquid out and not only makes it easier to pump, but also allows it to flow more easily into the depths of the cracks. Wear gloves, use a drop cloth, and take your time. The kit works as advertised, the foam expands quickly and does a fantastic job stopping the leaks. ## 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.sc/products/2392221-complete-diy-foundation-crack-repair-kit-urethane-sealant-10-ft](https://www.desertcart.sc/products/2392221-complete-diy-foundation-crack-repair-kit-urethane-sealant-10-ft) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-09-03*