We have noticed in the past a small damp patch on our bathroom ceiling adjacent to the outside wall. It never got very big, so I wasn't sure if it was active or not, or caused by steam.
After a while mildew formed on it, so I treated that quite vigorously with a suitable cleaner (it took more than one attempt to kill the mildew). Having done that the ceiling paint dried and later started flaking. So I sanded the patch down to the plasterboard and covered it with BIN primer with the intention of then repainting.
Well, a few weeks passed without me ever getting around to painting and now the primer seems to be flaking off. The area doesn't look or feel damp, but I'm wondering what would cause the primer to flake and whether we have a problem?
After a while mildew formed on it, so I treated that quite vigorously with a suitable cleaner (it took more than one attempt to kill the mildew). Having done that the ceiling paint dried and later started flaking. So I sanded the patch down to the plasterboard and covered it with BIN primer with the intention of then repainting.
Well, a few weeks passed without me ever getting around to painting and now the primer seems to be flaking off. The area doesn't look or feel damp, but I'm wondering what would cause the primer to flake and whether we have a problem?