existing

Hello! I’m renovating my second floor bathroom. I want to reconnect to an existing threaded, 2-inch copper pipe that served the old shower floor drain. As you can see from the picture, the pipe extends about one inch above the 1/2 hardibacker subfloor. The plan is to build up a mortar bed...

Hopefully the picture attaches below. We’re trying to install a new water softener and the house was pre-plumbed for it. The water loop is obvious and not an issue but the drain line has me concerned. I blew into it and heard/felt it blow freely somewhere (there’s no outside drain end point...