I'm decorating the bedroom at the moment and have noticed that the wall with the window is damp. The lining paper has come away round the window and there are a few small mould patches near the bottom of the wall.

When we first moved the previous owners had some sort of polystyrene stuff on the walls and had then papered over this.

So, does anyone have any suggestions on some treatment on how to stop the dampness and what was the polystyrene all about ? Would it be a good idea to put this back ? oh and whats thepoly stuff called so I can price it up !

Cheers

 

how old is the house?

 

im sure its dryzone is supposed to be quality stuff
do a search for it on google

 

http://www.dryzone.eu/en/

 

House was built in 1955.

Would these be any good ?

Polystyrene stuff
http://www.diy.com/diy/jsp/bq/nav/na...&isSearch=true

Paint on stuff to stop the damp
http://www.diy.com/diy/jsp/bq/nav/na...&isSearch=true

 

I would imagine the polystyrene was used to help with insulation especially on a house that did not have cavity wall insulation. so as far as heating costs it is a plus to have. As far a the damp, a sealent designed for damp should do the job especially as it is only a small patch, it should also help kill the mould

 

so the one i linked to is ok then ?

 

It sounds like condensation, especially with it being an older house. I can't see the products your listing stopping the problem though.

Probably best to get a professional in to take a look as it could be a few things.