How To Frame A Header For A Sliding Glass Door

When installing a sliding door the frame is going to require the most attention.

How to frame a header for a sliding glass door.

When in doubt build a double 2 12 header sandwich like we explain next. Non load bearing windows and doors do not require a structural header. 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. In all but the most bizarre situations they ll easily carry the weight for 4 ft.

When in doubt use 2 by 12 inch headers. You will need to add 1 2 of plywood between the 2x4 s to get the right wall thickness of 3 1 2. If the door is not framed correctly the door will not stay in place. Most door frames that are 4 feet wide or less require a 2 by 6 header.

This is the actual thickness of a 2x4. Wide window and door openings and in most situations be code compliant for openings up to 6 ft. Also be aware double or triple jack studs may be required based on the opening width and the load the header carries. To make the door header the top of the door frame cut two 2x4s to the same length as the width of the original opening and nail them securely together.

You can access a free copy of the 2012 international building code here. Cut the door header. Wide a common patio door width. Measure the width of your door frame.

A 36 door has a rough opening width of 38 so your header is cut at 41. The steps to frame a sliding door and the tools required for the job are listed below.