I have what looks like a bad damp patch on my ceiling. But it is completely dry to the touch. Backstory:
This room is directly under the loft. I bought this house back in february, there was a wet patch in this spot caused by a leak coming from the gutter. I had that fixed, and also had the entire room re-plastered because it needed it. Once the plaster dried, I waited a good couple of months for the patch to dry before painting the ceiling, but the patch did not disappear. It wasn't wet to the touch, so I thought it was dry but may have just stained the plaster. I only applied a thin layer of paint to the area to see what would happen.
However since then, this patch has *very* slowly expanded, and I'm not sure what to do with it now. There is no sign of wetness directly above it or anywhere up in the loft, there is no water leaking in from anywhere.
So, could this be:
- trapped water somewhere under the insulation in the loft, that's been there for ages?
- the paint sealing in the water and not allowing it to dry, so it has to spread sideways?
- just a slowly spreading stain that I should use stain-cover on and forget about?
I've read that drilling a hole in the ceiling and allowing moisture to come out that way is a potential solution, but other than that, I'm stuck and would welcome any advice you may have. Many thanks!
This room is directly under the loft. I bought this house back in february, there was a wet patch in this spot caused by a leak coming from the gutter. I had that fixed, and also had the entire room re-plastered because it needed it. Once the plaster dried, I waited a good couple of months for the patch to dry before painting the ceiling, but the patch did not disappear. It wasn't wet to the touch, so I thought it was dry but may have just stained the plaster. I only applied a thin layer of paint to the area to see what would happen.
However since then, this patch has *very* slowly expanded, and I'm not sure what to do with it now. There is no sign of wetness directly above it or anywhere up in the loft, there is no water leaking in from anywhere.
So, could this be:
- trapped water somewhere under the insulation in the loft, that's been there for ages?
- the paint sealing in the water and not allowing it to dry, so it has to spread sideways?
- just a slowly spreading stain that I should use stain-cover on and forget about?
I've read that drilling a hole in the ceiling and allowing moisture to come out that way is a potential solution, but other than that, I'm stuck and would welcome any advice you may have. Many thanks!