Garage Door Opening Header Size

Measure the head room the distance between the top.

Garage door opening header size.

Both headers and girders are beams that are oriented horizontally and transfer load down to walls piers or posts. The size of the door will. Window door garage door headers supporting roof wall floor loads. Next measure the sideroom or space available on the left and right sides of the opening.

If you are installing a 9 wide door the opening will be 9 3 wide. Timberstrand header comes only in 3 widths in depths that range from 4 3 8 to 18. Frame the rough opening to a height that is 1 5 taller than the door that you have selected. Between 4 and 5 feet the header should be built 2 inches wide and 8 inches long while a larger opening needs a header that is 2 by 12.

Although single plies are permitted they are not recommended. It is worth noting that the 18 foot garage door header application pushed timberstrand beyond its structural limit. Most vertical track systems. Tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications.

When in doubt use 2 by 12 inch headers. For instance if you have a 16 door and are using river stones that are approximately 2 to 2 1 2 you will want the rough opening to be roughly pun intended 16 6. Begin by using a tape measure to determine the width and height of the door opening in inches. Their is no notching permitted in the center third of any beam.

Window door garage door headers supporting roof loads only. Measure the width of your door frame. Frame the rough opening to 3 inches wider than the garage door size you have selected. If the opening will be 5 to 6 feet wide such as for double doors then you will need two 2 by 10 headers.

If you are putting in an opening between 4 and 5 feet wide then you ll need two 2 by 8 headers.