Radon is a harmful gas that exists below the ground and can seep up through cracks in your foundation, as well as cracks in your basement floor. The only way to protect against the dangers of radon is to use a sealant solution like Mar-flex’s new UltriSeal. UltriSeal is built to protect against radon and other harmful chemicals in the environment. UltriSeal is versatile, meaning it can be applied to ANY concrete surface, including walls and driveways. This makes our new product the most efficient and dependable sealant on the market, when it comes to protecting against these harmful chemicals. Try UltriSeal today!