The height is a bit trickier based on the casing and header.
How high is a header for sliding doors.
Most door frames that are 4 feet wide or less require a 2 by 6 header.
These are an expensive part of the whole job as these wooden headers can span anywhere from eight feet to fifteen feet in length or more.
Your header size is determined by the load it carries.
A 3 foot door requires 6 feet of track.
This width is the same width as a typical 2x4 framed wall.
Secure the hanger board to wall studs with flathead screws driven slightly below the surface of the wood.
We recommend 1 1 2 to 2 of overhang on each side.
You will often see the edge of the steel beam on the outside of older brick homes just above the door.
A 2 x 6 cut twice as long as your track should do the trick.
In recent years a heavy timber has been used or a pair of 2 x 12 planks.
First make sure that the header space over the opening can support the weight of the hanging barn door.
These three header components when assembled and nailed together will be exactly 3 5 wide.
30 opening 34 wide door.
In the top picture above the door opening is 5.
Thick headers 1 1 2 in.
There must be a support beam or strong studs in place on which to anchor the sliding track and there should be ample space between the top of the opening and the ceiling to install the track.
The finished 3 1 2 in.
So your jack stud should be cut at 81 for a 6 8 tall door.
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.
High studs it established just the right height for windows and doors fig.
When we installed the headers even with the top of the standard 92 5 8 in.
Plus 1 2 in were the same thickness as the 2 4 wall framing 3 1 2 in.
So the header is constructed of two 2x6 s with a 1 2 osb or plywood spacer.
Once hung the door will be another 1 2 off the floor for a total coverage above the door of 1.
Mount the board 2 inches above the door opening or above the top of the door casing check the hardware manufacturer s instructions for additional requirements.
Structural support is required barn doors can be heavy up to 200 pounds or more so for sturdiness most people mount the track to a header attached to the wall studs above the doorway.
For a sheet rocked opening we recommend the door height be 1 2 larger than the opening.