Excellent product... I live in Florida where it rains slot. I have been living in a camper since my home was destroyed by a Cat 5 Hurricane... The roof of the camper leaked when it rained. I was in Dollar General and spotted a can of Mr. Swift's flex seal and thought why not... I sprayed the entire top of the camper with it and waited for the next storm...When it it hit, it was ferocious! But not a single leak in my little camper... EXCELLENT PRODUCT!