On the same day that they installed the gutters, we had a huge storm with 5-6 inches of rain in one night. I watched the rain, and the gutters handled that big downpour. It was so much rain. We are very happy with it, and it looks good on the house. My doctor also loves his gutters from LeafGuard, too. We're very pleased with them. My wife is glad I won't be climbing the ladder to clean the gutters anymore anymore, and I don't have to think about cleaning them, either.