We live in a high 'calcaire' region, some of our internal walls have a white fungus type growth and the stone underneath is crumbling in places. Has anyone any idea what to do about this? I brush it off but it forms again.
We live in a high 'calcaire' region, some of our internal walls have a white fungus type growth and the stone underneath is crumbling in places. Has anyone any idea what to do about this? I brush it off but it forms again.