How-to-install-garage-door-opener-track, www.familyhandyman.com. I have an older house and would like to install an opener. it's a sectional wood door. the problem is that with the door open, there is just about an inch (a little less actually) clearance between the door and the ceiling. is there any way to install an opener in this situation ..., safety features. the protector system® safety sensors project an invisible light beam across the garage door opening and automatically reverse the door if anything interrupts the beam while the door is going down. Low headroom garage doors and openers. your garage door is as old as the hills and really needs to be replaced with a new one. whether yours is a one‑piece up‑and‑over style or a swing style, there is a means of replacing it with a sectional door., for a garage door opener, you will need about 6 ½ inches of headroom at a minimum. garage door openers in the cincinnati area. as inconvenient as it may seem, it’s possible to install a garage door in a space with low headroom—with the right system, it’s easy! you just need the right professionals.