I have had customers open electric garage doors whilst I was cleaning the windows above them. I never moved so quick!
There's a good chance that the door would have missed your ladders! Most of them move back (inside the garage) and up and they don't swing out very much. Recently I actually come down my ladder to find a lady waiting in front of her car, terrified that the door would have hit my ladder. She'd activated it from the other end of the garage and driven towards the exit to see my ladders blocking her path. I never heard a thing - either from the door mechanism or her car.
;) New invention for window cleaners approved by HSE ;)
:o GarageDoor TransmitZapper, blocks garage door senders while you're up your ladder!! :o
:D BUY ONE TODAY - SPECIAL OFFER FOR READERS OF CLEANITUP!! Buy two get one free :D