: We found out by a plumber that we have a crack in the shower module drain. It is about 1 inch long. He suggested we could get it patched or get a new shower installed. I called a place and they said it would be $450.00 to patch it. They put foam in the crack to seal it. Then they will reinforce it. Is this a good idea. Will it last?if this is fiberglass unit-get another estimate. fiberglass is relatively easy to fix, just time consuming to get a good match.