Thanks pinenot, it's definitely the second closing door that is at fault. So, on the last image I took from inside the garage, it is the one on the left. The first closing door (with faint blue paint on it), is absolutely level.
Hi,
I've a 2-door side-opening wooden garage door.
The second door to close (therefore providing the seal) has warped and the wood veers off at the top, leaving a gap of about 1-2cm and exposing the garage to the elements. The bottom and middle meet and seal perfectly.
Is there a lock or...