Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.
Garage door lintel detail.
As this size fluctuation happens over the years the weight of brickwork above a garage door puts pressure on the structure at its weakest point the middle.
Garage lintel replacement is becoming more frequent as homes and buildings age.
Lintel 65 mm requirements for flashing as for other door and window head details.
Header requirement 2 at minimum the header should be 12 wide with doubled 2 4 at opening and ceiling running the width of the door with a 2 4 in the center of the opening for the center bracket to attach to.
Acceptable solution e2 as1 to building code clause e2 external moisture is quite prescriptive.
Cut a 2 x 6 piece of lumber and nail to the face of wall exactly in the center of the garage header.
They are the same as for external door and window details.
The steel used to support brick or stone work above doors and openings is called a lintel.
Figure 1 garage door head detail with masonry veneer cladding and infill panel over the door.
Flashing needed for garage doors the requirements for flashing garage door openings are simple.
When a garage door lintel fails it causes the brick wall being supported to sag leaving a noticeable crack right above the garage door.
Without intermediate support bearing only on masonry at each end is allowed in the national building code and this is incorporated in the table below.
A loose lintel i e.
The inspector noticed that a steel plate acting as lintel beam is running over the garage door to support the brick layer above but it ended up 3 inches short on one end.
Figure 2 garage door head detail with direct fixed bevel back horizontal weatherboard cladding.
The primary cause of a sagging lintel is poor design.
Last pull a measurement from the top of the 2 x 6 piece of lumber that you just installed to the ceiling of the garage.
Figure 3 garage door head detail with bevel back horizontal weatherboard cladding over a cavity.
Attach lumber to the face of the garage wall to the edge of the garage door header 7.
Sagging garage door header lift system the lintellift system is a patented product that ensures garage door lintels or headers won t sag.