cutting large hole in new ceiling Ask your questions and find answers on many subjects relating to plastering and dry lining

[colinpost]

i need to cut a 10 inch diameter hole in a new bare plasterboard ceiling. Do i cut the hole before or after applying a plaster skim ?

[kbrownie]

Hi colinpost,
I'd skim it first just to make it easier to trowel up. Seems quite a large hole, so be carefull when cutting look out for joist and nogins plus any cable or piping.
Good Luck
KB

[colinpost]

i agree with your train of thought. As for cutting out, i've made reference to were exactly the hole is to be - so avoiding known joists. i was just woried that the plaster saw would shatter/crack the new surrounding ceiling skim plaster.

cheers

[chris_on_tour2002]

the plaster shouldn't shatter or crack if it has been applied properly. use a good sharp hole saw (won't stay sharp for long if you are drilling through plaster all the time!) and go easy. should be no problems. i agree with kbrownie - skim first it will make for a tidier job.