Rising damp

[Mendi]

Have just discovered obvious rising damp behind a bit of furniture. Horrendous. On the low wall of the conservatory - the wall's about 3m long. Is this going to cost ££££ to fix?

I had planned to put the house on the market soon!

Are you sure it's rising damp and not some other form of damp (could moisture be condensing behind that furniture?). If the conservatory was recently built, it should have had a modern damp proof barrier - see if it is still under guarantee or, if the barrier has been breached, whether that can be simply repaired.

Conservatory is at least 10 years old I think - maybe more. Done by the people I bought from.

There is moss on the walls (indoors!) and paint all flaked off. Surely that must be rising damp?

Doesn't say much for my housekeeping skills obviously but there's no need to more this bit of furniture really. I don't know what made me do it today but I suppose just as well I did.

Damp behind furniture is most often condensation.

How is this conservatory ventilated?

Is there a source of excessive water vapour, such as wet washing?