Please do
please don't .... cold roofs/rooves do not require ventilation providing you use a top notch vapour permeable membrane and (dependant of the type of tile), counter battens
I know the waters from the Swale, Ure, Nidd, Wharfe, Aire, Derwent, Calder, Don and Ouse pass close by your house Annie .... that's a lot of water ....
hope you survived rainy Friday
PS I forgot the Loxley
You'll probably find the missing button inside the dash panelling ... it was a common problem that these used to be easily pushed past their seating on early models ... I think Nissan fixed it on later models
ETA probably the VDC