Garage Door Header Detail

The width of the rough opening should be 3 inches greater than the width of the garage door you are purchasing.

Garage door header detail.

For deeper depth parallam. You get the picture. If it s 9ft the opening must be 9ft 3 inches and so on. To finish the opening cut the header and jambs from 2 lumber.

For instance if the width of the garage door is 8ft the rough opening should be 8ft 3 inches wide. Frame the rough opening to a height that is 1 5 taller than the door that you have selected. Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18. If the door is 7 tall frame the opening 7 1 5.

Choose from carriage house traditional and commercial garage doors in steel wood and wood composite materials. Free how to buy a garage door guide nationwide dealer network. Depending on your opening the lumber width will be 6 to 8 wide. In an attempt to construct portal frames some garages are built with one continuous garage header extending over two or three garage door openings as shown in figure a.

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.