BS … “100mm past each end of the join” refers to the butt joins … the ends of the sheet, not along the flush edge. The diagram even says it’s for butt joins. Even if they didn’t back-block the butt joins they won’t have to pull all the insulation out because there’s probably only 5 or 6 joins in the whole house, and they will be in the big family areas.
So we are assuming this is a level 4 finish and there are three or more recessed joints occuring in a continuous ceiling area - thats when its required
BS … “100mm past each end of the join” refers to the butt joins … the ends of the sheet, not along the flush edge. The diagram even says it’s for butt joins.
Even if they didn’t back-block the butt joins they won’t have to pull all the insulation out because there’s probably only 5 or 6 joins in the whole house, and they will be in the big family areas.
0:16 Those joints are not butt joints. They've reinforced the recessed joints which is a good thing.
So we are assuming this is a level 4 finish and there are three or more recessed
joints occuring in a continuous ceiling area - thats when its required