"mossmoran" wrote:

My bathroom wall is constantly damp because of condensation, therefore
black patches are always appearing. It is probably the paint i'm using,
can anybody tell which type i should use and where to get the best
quality. Thanks.
--
mossmoran

Damp proof paint or any other special paint won't make any difference to
condensation and mould. Have you got an extractor fan in your bathroom, or
can you leave a window open to improve ventilation?