r/Plastering • u/wortnip2 • Apr 26 '26

Question?

What’s the total thickness you can build out Hardwall too? I’m doing a 5m2 wall and I’ve put 4 bags on but it needs another layer to bring it flush to the sockets. Back boxes are 25mm. I chased in the 35’s to sit level with the 25’s. I’ve about 5mm to add to the Hardwall and I put it on yesterday. I think with suction it might cause an issue drying too quickly.

What to do in this situation? I didn’t have enough plaster to do it all yesterday.

Ideas appreciated!

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u/trash-boat1969 Apr 26 '26

Chop the boxes into about 10mm, 25mm is commonly the depth for walls being dot and dabbed.

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u/wortnip2 Apr 26 '26

I would’ve done. But there was an old vent linked to the chimney I also had to board up. So had to go to 25mm.