approx coverage per bag of plaster please

[eviliangenius]

morning all.
the plasterers are coming ion next week to plaster in the new exstenion i have built at home.
i have got to get the board finish wall beads and skrim tape in for them.
anybody know a rough guide to how many square meters one bag wil cover?
i can work out how much area is to be plastered and use it as a rough guiid for how many bags im gonna want.
thanks alot
ian

 

[roughcaster]

10 Sq. Mtr's per 25kg bag, at 2mm thick, but the thickness will vary.

Roughcaster.

 

[adam20]

i normally aim for 7m2 per bag as a rought guide, this normally covers any undulations in the walls.

 

[roughcaster]

And you'll always throw some away.

Roughcaster.

 

[adam20]

best to be looking at it then for it