Garage Door Lintel Size

The clear span between the masonry supports.

Garage door lintel size.

We use 3 4 x 6 lags and we use 16 of them in to the glulam headers. Example lintel length 150 1800 150 2100mm. There is a floor above but floor joists are parallel to lintel so not picking up floor load are at least minimally picking up load. If you are installing a 9 wide door the opening will be 9 3 wide.

Maxi lintel 140 x 90 x 2400mm. Interior doors internal doors fire doors door blanks. Door frames linings linings casings. Strength of steel lintels does not govern in these tables.

The lintellift system is a patented product that ensures garage door lintels or headers won t sag. Garage door lintel span 18 and is on the gable end. Frame the rough opening to 3 inches wider than the garage door size you have selected. Frame the rough opening to a height that is 1 5 taller than the door that you have selected.

Garage is 26 x 30. Add 150mm minimum bearing to each end. L 600 or 0 3 max. When a garage door lintel fails it causes the brick wall being supported to sag leaving a noticeable crack right above the garage door.

If the door is 7 tall frame the opening 7 1 5. Longer spans such as those over garage doors should be designed by a structural engineer to carry brick floor and roof loads. We have limited spans to 12 0 for economical angle sizes. We currently use a 4 x6 x 1 2 lintel with a span of 204 for masonry support over 16 garage door openings.

Sagging garage door header lift system.