I have installed a modular shower stall, 3x3 with a flange that attaches to the wall framing. At the top where the side rolls over to the attlchment
flange there is a flat level off of about an inch that the greenboard will come down to. My question is since this ledge is an inch or so wide and is gelcoat, how do you make a neat looking joint at this point other than just getting a close fit with the GB and using white silicon caulking
1.) Attach the GWB by using the factory tapered edge against the flanges.
2.) Coat the length of the GWB, as needed with compound.
4.) Apply a paintable silicone/latex caulk along the edge.
Also: tip: Attach furring strips onto the rough framing, that are the same width in thickness as the flange, prior to installing the GWB. That way, the sheetrock will not bow when it seats over the flanges.
Last: Consider using XP board (purple board), rather than MR (green board).
Last edited by AtlanticWBConst.; 02-29-2008 at 08:13 PM.