So I built a new garage door after our au pair "nudged" the last one with my car. As it is an unusual shape and size with no roof clearance (and limited budget) I built one out of timber. Works fine, however I can't work out a way of installing a lock that could allow it to be opened from both inside and out, Currently can lock from inside.
The cladding is 25 mm tongue and groove cladding followed by 70 by 45 and the 9 mm ply on the inside. So looking at around 80 mm of thickness.
Any ideas?