mould on walls

[craigdawn]

we get mould in are bedrooms on the outside walls, whenever we have anything against those walls.is there anything that can be done.we have tryed treating the inside with a mould resistent

[woodchopper]

The mould is caused by condensation - either ventilate the rooms especially at night or invest in a de-hunidifier.

[bezzapebo]

We have suffered this problem also (see my questions "mould in bungalow" and "damp/condensation" dated 26th and 31st jan on this site - some very helpful suggestions there). We think we have finally solved the problem. We have bought some small round air vents from B&Q that we have put into the wooden overhang of the roof on the outside (approx �5 for pack of 5). Easy to install - instructions on the packet. We have also installed an extractor fan in our bathroom, as we only have a shower in there and we were getting mould on the ceiling because there was no extractor. Again this vents up into the roof space and out through the wooden overhang of the roof outside. We have noticed that the black on the ceiling is now disappearing!! Lastly, we have also put some airbricks into the outside walls because there wasn't any. We found these works have (hopefully) solved the problem - we had mould/damp on both ceilings and walls, and everything was turning green and smelling musty inside wardrobes etc. You can wash down any furniture that is turning green, and get a treatment from B&Q which stops it from coming back, this can also be used on interior walls. This works also. My husband was able to do all these jobs himself and quite cheaply too - Good luck

[RATTER15]

You will usually get condensation if you have warm air (like air lacking circulation) settling on a cold surface (an outside wall) the only real cure is to move anything away from the said wall a little to allow air movement, lowering the temperature of the room will also help!!

condensation = warm air holds a lot more moisture than cold air, so when this warm air comes into contact with a cold surface, a window is a perfect example, it will release this moisture against that surface.

now if that surface stays moist through lack of circulation, mould could grow, you may be able to kill the mould but you still have the problem of trapped moisture which will eventually damage the decoration, wall paper etc and then the plaster on the walls!!

You need to look at the cause and deal with that!!!