An area of blotches has developed on a bedroom wall. The wall is an external wall. However, this does not appear to be rising damp as it starts a good couple of feet above floor/ground level and currently extends upwards a couple of feet from there. Externally the rendering appears to be sound in that area too.
The blotches are quite small each one no bigger than a halfpenny coin and generally much smaller but there are many. Some have the appearance of having 'run' down the wall. The wall was skimmed about 4 years ago and then painted with emulsion.
I would like to redecorate this room but I'm not sure what is causing those blotches or how to proceed?
The blotches are quite small each one no bigger than a halfpenny coin and generally much smaller but there are many. Some have the appearance of having 'run' down the wall. The wall was skimmed about 4 years ago and then painted with emulsion.
I would like to redecorate this room but I'm not sure what is causing those blotches or how to proceed?
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