Hi Guys,

I've got a DA, construction certificate and owner builders permit to do a renovation to our 3rd storey. We are removing all the internal walls and realigning which will mean we re-doing 4 bedrooms, 2 bathrooms, laundry and a sitting room. There are no changes the subfloor or roof.

I have a bit of a dilemma what to do with the plastering. The current walls are 2700mm studs with a 50mm gap to the truss roof, all rooms currently have a 90mm cove cornice. I would like to modernise and do square set to match the lower levels. The 2750 wall height is awkward as you can't use 1350 sheets.

I can think of two options:
- Use 3 x 1200 height sheets, which does add more cost for sheets and plastering the extra join
- Batten over the current roof sheets which would drop the roof about 45-55mm and I could then use 2 x 1350 height sheets. Save money on sheets, plastering and disposal costs of leaving the current roof inplace

Any advice anyone could give me what to do?

Thanks.