Localised crumbling on an interior wall with no internal pipes -
September 28, 2021 2:05 AM Subscribe
An interior wall has a few spots where the paint has come away and the underneath is crumbling (see images on Imgur). The wall doesn't have any pipework or anything behind it. Feels dry to the touch and there's no water damage visible anywhere around the wall. Is this a localised issue that I can sand, polyfil and repaint? Or is something more disturbing afoot? The building is an ex-local authority maisonette, built in the 70s.