Bow windows again

[cigamseinnub]

went to put in a bow window today and couldn't work out if it needs to be set back the 30mm into the cavity that normal window are now required to be.

have tried to read up but cant find any info relating to bow windows and building regs
all the other windows where not to hard to do but am now wishing id paid for someone do fit this bow
thanks

 

[cigamseinnub]

just an update for anyone who comes across this in search ,
after speaking to a window fitter he confirmed that bow
windows also have to be recessesed into the cavity walls ,so the same regulation aplies to bow windows as to other windows