I have an outward corner where plasterboard meets MDF beadboard. I can't put a corner bead due to it being rounded and angle changes happening. My hope was to find a filler that is somewhat elastic, apply it over a few centimeters onto the plasterboard, and paint so that the joint isn't visible. I'm not too keen on latex caulk as I think it will show. I've found PP elastic, but no info on HOW elastic it is. Does anyone have experience with this? Could it work? Any other tips?
