BLACK MOULD ON WALLPAPER AFTER LEAK

[Nicetoseeyoutoseeyounice]

a few weeks ago we had a roof leak and the rain has come through to our bedrooms, this was repaired but now as the time has gone on we have some small spots of black mould on the wallpaper, what is the best remedy,
should i strip and leave to dryout and then repaper, i have heard there is something i can paint on the bare plaster after stripping which stops the marks coming back through, any tips please.

 

[elrobbo82]

strip the paper and wash down with a fungicide solution then apply an anti mould acrylic (2 coats). i would recommend johnstones for this as this is what i use. if its bare plaster behind the paper don't forget to prime with a watered down coat off matt emulsion first. you can then re paper.

make sure the leak has been fixed first though!!!

forgot to mention that if there is a water stain, you will have to touch up with either a thinned down oil based undercoat or a stain block.

 

[TheDec]

Strip the paper and allow the walls to dry out completly, and wash the mould/stained areas with an anti fungicidal wash, when dry paint the areas with an Alkali Resisting Primer.

Dec

 

[TheDec]

Just one word with regards to the oil based undercoat, it can stop the stain reappearing and sometimes it cannot The Alkali resisting primer is the correct product for the job.

Dec

 

[elrobbo82]

thedec

your right going for alkali primer is a better choice. i tend to use BIN for this sort of thing due to the fact i have loads in stock and that it is just spot priming. wouldn't buy it specifically for this job though.

 

[TheDec]

When water soaks into masonry it can sometimes activate salts that will lead to the formation of efflorescence, that is why it is of the utmost importance that an Alkali Resisting Primer is used.

Dec

 

[elrobbo82]

haven't heard that word since the old days. white fluffy stuff (salts at the surface).

 

[TheDec]

Yes!

Dec

 

[Nicetoseeyoutoseeyounice]

Can I just say thank you elrobbo82 and TheDec for your advice, i will be getting to it ASAP.