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I know fiberglass shower stalls are not exactly “fine homebuilding” but I am going to install one in a cabin I’m building. I’m installing against an outside wall – do you just insulate, vapor barrier and screw the stall directly to the studs?
I’ve used mortar underneath for some tubs and shower pans I’ve done in the past. What do you guys use? The instructions with the stall mention Gypcrete? Is that a drywall compound?
thanks, jim
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Jim,
I have a fiberglass shower unit in my finely built cabin, thank you very much. Insulate exterior wall(s) first. To avoid having to fur out your studs later notch for the top flange. Block between the studs on all framed sides so that you can screw through the lip every 6" or so. When you frame your side walls, provide a 2"x4" on each side so that you can screw off the vertical flanges. The real trick in this job is getting the drain to come up right in the center of the pan. If you are working over crawl space put the shower in first and plumb from below. If, however, you are working on a slab luck be with you cuz your margin for error is about a quarter inch. I use mortar. One bag of the ready to be made stuff will do.
Steve
*Steve, Thanks for the help. I'll use my old power plane to cut notches for the flanges... Last time I used mortar, it lifted up the shower pan about 1/4" as it dried, ever had that happen?Jim
*Never had the lifting problem you describe. I use a circular saw to rough out the notches and establish the plane of the nailing/screwing surface with the blocking.