Silicone 2+ concrete sealant is 100% silicone, 100% waterproof and 100% weatherproof, making it an excellent candidate for both vertical and horizontal applications on concrete, mortar and stone. It applies to wet or dry surfaces, can be exposed to rain in as little as 30 mins and cures in 24 hrs. It is permanently flexible and will not shrink or crack when subject to UV rays or freezing temperatures. Adhere to porous materials such as brick. Guaranteed for as long as you own your home.