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Double-stud wall door: frame within a frame

maine_tyler | Posted in Green Building Techniques on

I am hoping to get some clarification on the ‘frame within a frame’ detail for double-stud wall door hanging. 

I am referencing the detail found in the GBA library (and other similar).

1) In the door head detail, there are two horizontal 2x’s below the header. I understand one, given the 2 ply (3″ wide) header; why two?

2) How is the frame (within the frame) attached, especially if one of the 2x’s lands in the plywood bridge of the buck? Toe nailing into plywood doesn’t seem like enough. Also, do folks glue the foam in the frame sandwich to make it all a rigid unit? 

3) To confirm: Functionally speaking, an extra frame is only needed on the hinge side. The frame is added to the striker side and the head simply to create a symmetrical appearance / for trim. Correct?

Thanks for any guidance,
Tyler

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Replies

  1. GBA Editor
    Martin Holladay | | #1

    Tyler,
    I assume that you are talking about the detail suggested by Rachel Wagner in "Windows and Doors in Double-Stud Walls."

    The detail is shown below.

    Let us know if this article clarifies the suggested detail. If you still have questions, go ahead and post them again.

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