bathroom condensation damp

[Stottcaf]

Hello all,
I'm about to rip out my old bathroom suit/tiling etc and renew, however as it currently stands the bathroom suffers from a lot of condensation based damp on the 2 external walls. (victorian single skin walls)

I was wondering what people thought of my plan, and whether it will cure it.

The current bathroom extractor is woefully inadequate and is a simple on/off fan so I was going to replace with a timed extractor rated at over 85LPS.

As well as this I was going to put a new radiator of the correct BTU in, roughly 3500-4000BTU.

Do you think this will be enough to stop the condensation issue? Or should should I also consider removing plaster, insulating, vapor membrane, boarding and re-plastering to increase the inside temperature of the external walls?

Thanks
Chris

 

[DIYedboy]

you will never stop the condensation until you have thermal lined those nasty cold external walls which brings up their internal temperature thereby greatly reducing the condensation point, you still need extraction of course but increasing the heating won't stop them external walls being minus 10 in December and attracting condensation like a river