By using a steel beam there is less chance of a re occurrence in the sag.
Replace garage door header.
You basically build kind of a fake wall right up to the underside of those rafters to support them between the garage floor and the underside of the rafters while you do the disassembly and replacement of the header.
To install the extra header jack your door up to correct the sag and bolt in the beam.
The lintellift system is a patented product that ensures garage door lintels or headers won t sag.
The old header came free without too much trouble.
It is a good idea to sandwich 1 2 plywood or osb between the pieces of 2x dimension lumber.
The best way to fix this problem is to replace the header.
The lintellift system fixes this issue by adding support underneath the sagging lintel.
Before removing anything else steve and his crew built a temporary wall to support.
Do this with plywood strips layered between the three 1 1 2 inch by 11 1 2 inch boards.
You can t replace a 16 chunk of it and retain any structural integrity.
How to replace a load bearing door header step 1.
If any portion of your garage door header has rotted or softened due to water exposure you need in replace the entire header.
Take down any trim or any external pieces of wood which are not part of the garage door header.
Build a temporary wall.
Remove the old header.
And you do that right inside the garage door.
Support the ceiling of the garage using some lumber.
When a garage door lintel fails it causes the brick wall being supported to sag leaving a noticeable crack right above the garage door.
Once the glue has dried the header is ready to be cut to length and installed in wall framing.
You can go with a wooden brace but depending on the load on your garage door header the sag could reoccur overtime.
The assembled header can be clamped or laid flat under a weight to allow the glue to dry thoroughly.