Garage Door Header Requirements

How much headroom is required above a residential garage door.

Garage door header requirements.

Frame the rough opening to a height that is 1 5 taller than the door that you have selected. Without more detailed information that s as much as i can say. Also see assumptions for table development. 121 mm to 12 in.

Frame the rough opening to 3 inches wider than the garage door size you have selected. 304 mm available it is best to use a dual track system designed for low headroom. To finish the opening. Let s get started with your framing 1.

Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening. Garages with habitable rooms above the garage must be separated by not less than 5 8 inch type x gypsum board applied on the garage side. If you are installing a 9. How to build a garage door header.

For door openings up to 36 nominal and for structures with no more than two floors above it s a safe bet that doubled 2x10s are adequate as a load bearing header. Loading conditions are detailed below. On the other hand if there is only 4 in. Rip 11 inch wide strips of inch plywood using a circular saw.

For each application a pdf download is available. An attached garage must be separated from the residence and its attic area by not less than 1 2 inch gypsum board applied on the garage side. In order to install torsion spring hardware we recommend a clearance of 12 in. Lay a single piece of the 1 inch by 11 inch lumber.

However this requires mounting the torsion spring on the rear of the horizontal tracks. It is possible to mount torsion springs in a garage with only 5 inches of headroom. If the door is 7. Cut three pieces of 1 inch by 11 inch lumber to the width measurement of the garage door rough opening plus 12 inches.

Garage doors operating with torsion springs require a minimum of 9 1 2 inches of headroom while doors using extension springs require a minimum of 4 1 2 inches of headroom.