We have radiant heat in the plaster ceilings in the house. We had a roof leak, and the skim coat of rough plaster flaked off an area about 1.5 feet long and six inches wide, leaving this grey, concrete looking stuff underneath. It's not hard like concrete, but looks like it. It's dropping grit onto the kitchen counters, so I need to fix it.
What is this grey stuff? And why is it coming down? How do I fix this? Did the leak ruin the grey stuff so that I have to chip it out, and patch it with new? Or do I just have to cover it up to keep it from coming down?
Thanks
Emmett
What is this grey stuff? And why is it coming down? How do I fix this? Did the leak ruin the grey stuff so that I have to chip it out, and patch it with new? Or do I just have to cover it up to keep it from coming down?
Thanks
Emmett