Hi had a bedroom plastered about 5 weeks ago but there are 5 or 6 blobs of damp plaster that just will not dry.
When its warm and dry outside the lighten in colour as if they're drying, but when it rains or cold outside they darken in colour.
Any ideas what it could be?
The render/gutter and roof is all sound.
Thanks
When its warm and dry outside the lighten in colour as if they're drying, but when it rains or cold outside they darken in colour.
Any ideas what it could be?
The render/gutter and roof is all sound.
Thanks