So far there is nothing to confirm its "the blocked drain" - a drain which we haven't yet clearly seen, a drain that could be an Aco or a gully?
We can confirm there's a cavity wall, and what that might imply in terms of damp?
If the cause is rising damp or penetrating damp then drying out the interior plaster is irrelevent.
I'd taken my dehumidifier down and it's been running over the weekend, it seems to have dried a lot of the inside wall out.
They're already cleaned the drain out and shifted and cleaned everything that was up against the outside wall.
I'll pop down again tomorrow for a look as I've got another job to finish off.
Thanks for help.
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