- Reaction score
- 5,031
I've learnt something today and nearly didn't, 25 more minutes and I'd have been into tomorrow's quota.General rule of thumb is if the damp is showing as black spots or mildew it's probably localised so condensation or a drip from a pipe etc. If it's brown patches, like a tea stain, it's penetrating or rising damp. If it's less than about a metre high it could be rising, won't climb higher due to gravity. Most cases are simply condensation.
So probably condensation from this leaking pipe and soggy sound boards!