DIY Foundation Crack Repair Kit | Urethane | RadonSeal
The Crack Injection Kit for homeowners for over 25 years. Suitable for both hairline cracks and wide cracks (up to 1/2″). Can seal up to 10 feet of cracks in poured concrete. RadonSeal standard DIY crack repair kit uses polyurethane that forcefully expands to fill the full depth and length of the crack.