If you don’t see these springs, look above your door for a tightly-wound torsion spring. This spring is a safer lifting mechanism than extension springs as long as you don’t mess with the tension. Leave it alone and call a professional to release the spring.
It’s a good idea to place a block of wood or another sturdy substance to prevent the bottom of the door from crashing down on someone’s finger or toe.
If your door has windows, tape over the door to prevent shards from flying in case of shattering.
You can place shims on the floor to lift up an uneven side of the door. The rubber weather stripping will fill in the gaps on uneven floors as long as you keep the door panels straight during installation.
Leaving off the third hinge makes getting the panel into the track a lot easier.
If your garage does not already have an angle iron, find one at the hardware store and bolt it to the ceiling.
You can’t install the last panel without installing the track first, since the panel will fall in on you.
You will need a drill to rotate the spring a few times to add tension.
You will need to loop the free end of the cable through a small bracket. Add an S-hook to the bracket, then place the S-hook on the track above the door. You will also need to run a safety cable through the extension springs and loop the cables through the holes in the track’s brackets.
