I did some 4" drains for my gutter downspouts along the side of the house, connected both drains via y connector and ran them out away from the house. I've noticed that the pipes aren't holding water and suspect that the y connection isn't water tight. Figured this would occur. Great! Now I need to dig this stuff up! Digging this stuff up is going to be harder than installing it! Anyone want to help dig? LOL Used pvc cement on the connection and it didn't seem good enough. So how do guys connect these unions? Everyones input is welcome, like to hear different opinions or methods. I asked Home Depot and those guys were clueless, yikes. You'd think they know more since they sell the stuff. A friend said to use weatherproof cauking, probally better than PVC cement.