Vent advice

[markythesparky]

I have just replaced the soffit and fascia on the lower roof and i am wondering if i need to fit any ventilation in the soffit as it is open to the garage for over 60% of it see picture the soffit continues down the side of the garage

[ETC]

If it’s insulated - yes (and it should be above the bow window) if not - no.

Were there vents there before you replaced the soffit?

[markythesparky]

no its not insulated i had never thought about it before as the window bottom is not insulated either there was a vent in before but i could never understand what it was vented as you can look along the roof space from the garage.It would not be that hard to insulate just push a few tiles back and drop some in and the bottom is open for that.