Is this mould?

Made_Without

Looks like ash - it's the only spot in the entire room.

Pre-painting, I'm planning to

- wash ceiling and wall with sugar soap
- use white base / primer
- then paint

Will this section require anything else??

Also what's the best way to treat hairline cracks and a bit of plastering that has peeled off?

Thanks

C*F

[IMG]file:///Users/bigapple/Library/Caches/TemporaryItems/moz-screenshot.jpg[/IMG]

keystone

Loosk like you have a bit of black mold but basically it looks like what you have there its efflorescence. This is salts coming out of the plaster as a result of the plaaster being damp.

Method:

1. Remove source of damp.

2. BRUSH it off - do NOT wash it off. If you wet it you'll just start the cycle again.

3. Treat with an Anti-Alkaline Primer.

4. Over paint as if the wall was normal.

HTH

Cheers

Made_Without

keystone wrote: »

Loosk like you have a bit of black mold but basically it looks like what you have there its efflorescence. This is salts coming out of the plaster as a result of the plaaster being damp.

Method:

1. Remove source of damp.

2. BRUSH it off - do NOT wash it off. If you wet it you'll just start the cycle again.

3. Treat with an Anti-Alkaline Primer.

4. Over paint as if the wall was normal.

HTH

Cheers

Thanks Keystone - that seems doable!
Any idea why it's only happened in that small patch?

C*F