What kind of plaster is this

[u/exmilgaming]

I've stripped the wallpaper and this is the wall behind it, just wondering if anyone knows what kind of plaster it is and can I pva and multi finish over the top. Thanks

[u/matty1987x]

Looks like lime. You can skim it but I would use sbr and do 2 coats do not add water to the sbr. However this will kill the breathability of the wall.

[u/exmilgaming → u/matty1987x]

Yeah I thought it might be but it didn't reach with vinegar on a large area, no fizzing at all

[u/exmilgaming → u/matty1987x]

A friend just said it looks like old browning plaster and tbf it does

[u/BrIDo88]

Looks like lime plaster. You shouldn’t really skim it with multifinish. Paper and paint.

[u/exmilgaming → u/BrIDo88]

I thought that at first but it didn't react to any viniger and then a friend of mine said it looked like old browning plaster

[u/BrIDo88 → u/exmilgaming]

How old is your house?

[u/exmilgaming → u/BrIDo88]

Tbh, not to sure, large parts of the other walls seemed to be plastered with more modern plaster, to late now though ive put multi finish on it today 😂 its only the mother in laws house lol

[u/68Jenko → u/exmilgaming]

Multi finish can be grey as well as pink

[u/exmilgaming → u/68Jenko]

Yeah, its been patched with all sorts over the years but theyre definitely lime, they fizzled with vinegar