Arrgghhh. Thanks for posting. This is what another builder mate of mine said.
The guy who did this is my main builder. Obvs very worried about the quality of the other work now.
My builders seems to have done quite an irregular birdsmouth cut - is this acceptable for building regs?
This is for a single storey extension with roof angle at 16 deg - wall to wall length is 3 metres so span is just over 3m.
Thanks