I'm about to give my downstairs showerroom a makeover and have a question about tanking. There seems to be all sorts of info and systems out there, but essentially what is there now are plastered walls and a cement floor that has been painted with that waterproofing paint then tiled over. There's a shower unit but no tray, but the floor slopes to a drain. It's been working fine, but is just dated.
I want to remove the tiles and change the shower unit; it'll be completely sectioning off that end of the bathroom as it'll be a sliding door glass panel. But from what I've read because there's no shower tray its technically not a 'showerroom' but a 'wetroom' and therefore i need to tape all the corners of the walls.
I really just want to know what the purpose of taping up the corners is, when there is no actual joint there. I get it when I've put some sort of board up that has joints, but if the whole wall is skimmed and i'll be protecting it with the tanking paint anyway, I don't quite get it.
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