20 Foot Garage Door Header

It is worth noting that the 18 foot garage door header application pushed timberstrand beyond its structural limit.

20 foot garage door header.

I have seen too many garage door openings sagging after 10 15 years. Wide a common patio door width. And that s with a 7 12 hip roof avg. Wide window and door openings and in most situations be code compliant for openings up to 6 ft.

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. This product is new and distributors don t want to stockpile inventory. Calculating header size is no picnic as you learn how to frame a window. In all but the most bizarre situations they ll easily carry the weight for 4 ft.

Measure the width of your door frame. Window door garage door headers supporting roof loads only. 11 run 20 year shingles and no snow load whatsoever. The procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.

I ve even seen 2 1 3 4 x12 lvl headers in a 2x4 garage door wall sag while we were framing the house. 20 header over garage door. It worked for most of the applications in our case house. Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.

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. 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. When in doubt use 2 by 12 inch headers. Timberstrand header comes only in 3 widths in depths that range from 4 3 8 to 18.

If you want to build it right go with the lvls. Most door frames that are 4 feet wide or less require a 2 by 6 header. Table number grade live or ground snow load psf dead load psf load duration factor c d. 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.

That would take care of the wind and seismic shear loads.