Originally Posted by Exigent
And this allows you to reposition the garage door tracks?
Does an open garage door need to be parallel to the ground or can it stay in place at an angle? Most garage doors roll back and bend abruptly making a 90 degree turn. Can you just change the tracks to have them go up and then retract at a 45 degree angle?
With the wall mount garage door opener, the opener is no longer suspended in the center of the ceiling.
The garage door track can be extended up wards - instead of the track curving horizontal just above the door opening, the "bend" can be moved up so that the door continues to be horizontal, just at a level just below the ceiling instead of at the height of the top of the door (on in your case, just below the bottom of the beam in the photo). Additionally, if the ceiling is say an extra 4 feet high above the door, then the first four feet of the garage door can still be "parked" vertically (and in the bend). You still have the same eight feet or so of garage door, it just doesn't stick "into" the garage as far.
Slide up garage doors are help up in two ways. Mine uses springs stretched along the horizontal part of the track that pull a cable over a pulley and attached to the bottom of the door. The other way of doing it is to have a torsion spring above the garage door - the spring applies it's force to a shaft with a drum on each end. The cable from the bottom of the door wraps around the drum - as the door raises, the torsion spring unwinds and winds up the cable "lifting" the door. Both of these systems use the springs to support some for the weight of the door so that you can lift the door by hand.
In the case of the wall mount garage door opener, the motor attaches to that shaft and adds its force to lift the door automatically (just like a regular garage door opener "pulls" the door up from the top.
In your case, since you appear to be having your house built, it should be a marginal increase in cost to specify that the builder adds the vertical track extension (cheap) and uses a torsional spring to support the door. You may also want them to source the wall mount door opener, especially if a door opener is part of the build.