Many home builders do not consider this a structural necessity but a style and price choice for the homeowner.
Size garage door header.
Most door frames that are 4 feet wide or less require a 2 by 6 header.
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.
The procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.
The standard size for double garage doors is 16 feet wide and 7 to 8 feet high.
When in doubt use 2 by 12 inch headers.
The span above the door opening is framed with a long header that supports the wall area above the door and this header will need to be raised or rebuilt in order to increase the overall door size.
Many homeowners have two cars and need garage space to shelter them both.
Window door garage door headers supporting roof wall floor loads.
Many 16 x 7 garage doors will be designed with a pair of single 8 foot garage door bays separated by a central post or column.
Measure the width of your door frame.
Garage door header size calculator posted on october 29 2019 by bandi ruma wood beam design and installation no headers in nonbearing walls code notes window headers and door garage door header size headroom door frame and calculation.
Building a structural header for a garage door opening can be handled on the jobsite and will offer the same structural support as more expensive solid wood beams.