I tiled my walk-in shower straight onto plasterboard just to save a weekend: when the stain came through the ceiling below, it was already too late
A bathroom shortcut that seemed harmless—tiling straight onto plasterboard without a waterproofing membrane—turned into a nightmare when moisture silently infiltrated the substrate and brought down the ceiling below. This cautionary tale reveals why the UK building standard now demands tanking membranes and what proper protection actually looks like.