Plaster identification

[mattrgee]

Hi all,

Any ideas what kind of plaster this is? The finish is grey and smooth, about 10mm thick, with an open texture. I was expecting to find gypsum after stripping the paper. but found this instead.

 

[23vc]

Is it lightweight like browning/hardwall/bonding or hard and Sandy like sand+cement?
British gypsum stuff used to be grey sometimes, depending on quarry it came from I think, not sure if it still happens as not opened a bag of grey bonding or whatever for years. Either that or some kind of render it looks like

 

[mattrgee]

Is it lightweight like browning/hardwall/bonding or hard and Sandy like sand+cement?

Yes, lightweight. Never used bonding or similar before.

 

[^woody^]

Renovating plaster

 

[mattrgee]

Should have mentioned it's a 1970s built house.

 

[VickyBH]

Looks like the older type of plaster. British gypsum used to have grey plaster before it became pink.