As we have all done, we purchased a shower pan long before we needed it for our future bath remodel. We did not open the carton until it was time to start the remodel to find it broken. Is there anyway to repair the pan to avoid future leaks. The pan broke off at the point the pan turns to go up the wall to meet the tile. Can we use some kind of membrane behind the pan in case the repair fails at a future time?
Doesn't sound like something you should consider installing. I'd get a new pan....Why risk it?
No, there's no way that I know of to incorporate a membrane into a molded shower pan drain, and any membrane needs to be pre-sloped to the drain (even if there were a way to tie it into the drain). Placing the preformed pan over a sloped mudbed would certainly not work because the pan would easily deflect.
Do yourself a favor and throw it away and get a new one. The costs of doing that are small compared to repairing moisture damage down the road.