Black Mould under Paper

Miketatt · Post by **Miketatt** » Mon Jan 10, 2022 3:53 pm

Hi guys,

Just hoping for some advice on how to proceed. I’ve just bought my first house and was planning on doing a quick paint job in the spare room. I noticed some cracks in the surface of the wall and it sounded hollow underneath.

I started to peel off what appears to be paper that’s been painted over and have found this: see attached pic.

It appears to be black mould?

Do I need to just rip all the top layer off, treat the mould and then repaint? Or will it require something more?

Thanks in advance.

Mike

wine~o · Post by **wine~o** » Tue Jan 11, 2022 5:13 pm

Difficult to tell from the pics but that looks like a thick thermal wallpaper. Probably used to solve the mould problem in the first place.

EDIT :welcomeuhm:

ahfix · Post by **ahfix** » Wed Jan 12, 2022 9:06 am

If you clean the mold off is there paint on the wall surface?

Mold forms due to condensation coming in contact with a cold surface. In that case you might want remove the paper and clean the wall with a bleach solution to kill the mold first and after that you could paint with an anti-fungal paint Zinsser perma white. There maybe coloured version available.

I bet that room is cold so personally, after the above I'd line the walls with a thermal paper at a minimum or better still 25mm kingspan/celloex with foil to tape the edges and joins and then plasterboard over. It may seem a lot of work but a competent DIYer could do it or a dryliner/joiner in a day. That'll solve the mold issue and make the room warmer.

ah