[landroverroy]

Some years ago I attended a talk by the owner of a damproof firm. I have never heard anyone so passionate about damp!
We have called him in several times over the years for damp related problems and as often as not he has sorted the problems without automatically recommending a new damp proof course. Many damp problems are sorted with the correct ventilation.
One thing I always remember is him saying that mould is caused by lack of ventilation, not by damp coming in from the outside. The mould organisms can only grow on pure water, as caused by damp air condensing on cold areas of wall. Water that seeps in from the outside picks up salts and other impurities and the mould spores won't grow on it.

So if you have mould then you need to increase your ventilation, improve on your heating so the walls aren't cold, or get a dehumidifier which will remove the moisture from the air. 

[Fleecewife]

Yes I'm now doing those things, plus the recent good weather (mostly), has helped.  There is no new growth.  I just have to give it all a good scrub with Borax to clean the paintwork, then repaint.  I think the lime mortar has also dried now........

[Carse Goodlifers]

......One thing I always remember is him saying that mould is caused by lack of ventilation, not by damp coming in from the outside. The mould organisms can only grow on pure water, as caused by damp air condensing on cold areas of wall. Water that seeps in from the outside picks up salts and other impurities and the mould spores won't grow on it.

So if you have mould then you need to increase your ventilation, improve on your heating so the walls aren't cold, or get a dehumidifier which will remove the moisture from the air.

That was the cause of our damp in our bedroom before Christmas last year.  I spoke to a guy from a damp company and he couldn't have been more helpful.  The condensation was so bad that we had to throw out 2 chest of drawers and some laminate flooring.  Mould on the walls was all colours. Had the dehumidifier going, window open (when we could), heating on 24/7 for weeks before we could redecorate. When we repainted we did a layer of anti-mould paint before adding the colour layer and that has certainly helped.  The boss also now dries her hair in the lobby too.  It was a nightmare  but touch wood so far so good.

[waterbuffalofarmer]

We have had problems with damp here too, althiugh not as bad as some I really am sorry to hear about this carsegoodlifers and I really hope that the mould does go away. It is/was bad in our kitchen because our kitchen, built in the late 1800's, was origionally a salting room for meat.