Not that I expected it to be watertight, because it is an outdoor thing, however the roof panels do leak. I’ve triple checked installation, and they all fit right. I guess the big test for this thing is going to be when it sits out in my backyard during the winter, it’s supposed to have a 22￼00 lb Weight capacity for snow. I bought this only because I wanted covering, while waiting for the prices of lumber to come down so I can build a custom Pergola on my patio￼