Replace Garage Door Header

Support the ceiling of the garage using some lumber.

Replace garage door header.

When a garage door lintel fails it causes the brick wall being supported to sag leaving a noticeable crack right above the garage door. The best way to fix this problem is to replace the header. It is a good idea to sandwich 1 2 plywood or osb between the pieces of 2x dimension lumber. 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.

And you do that right inside the garage door. The assembled header can be clamped or laid flat under a weight to allow the glue to dry thoroughly. You can go with a wooden brace but depending on the load on your garage door header the sag could reoccur overtime. To install the extra header jack your door up to correct the sag and bolt in the beam.

Once the glue has dried the header is ready to be cut to length and installed in wall framing. By using a steel beam there is less chance of a re occurrence in the sag. The old header came free without too much trouble. The lintellift system is a patented product that ensures garage door lintels or headers won t sag.

Take out the header by sawing through the center piece. The lintellift system fixes this issue by adding support underneath the sagging lintel. You can t replace a 16 chunk of it and retain any structural integrity. Build a temporary wall.

Take down any trim or any external pieces of wood which are not part of the garage door header. How to replace a load bearing door header step 1. Remove the old header. Step 1 remove the garage door header.

Before removing anything else steve and his crew built a temporary wall to support.