I am in the process of building a garage and at the moment the exterior is almost finished and I am going to tackle the interior. The frame is in 45x145, and I'm going to cross-brace with 45x45, so far no problems. The question is mostly about how to handle windows and doors.

Do you let the 45 go all the way to the door opening, or place an upright on the frame for the door opening and then let the 45s go alongside it? In other words, do you brace on the braces where you will attach the frame to the doors and windows first and run the horizontal braces against them, or do you run the horizontal braces all the way to the edge to get end grain to attach the trim to?

Is there any reason to install vertical blocking in such a setup, and now I mean on larger wall sections. A wall is, for example, 12.5m long and 2.45m high without windows or anything. Just a flat wall. Is there any reason to block anywhere and why?

The reason I'm asking is partly in terms of insulation. If you run the braces all the way through, you get more insulation than if you brace on the door opening vertically.

There is an age-resistant plastic between 45x145 and 45x45, and then the whole thing will be clad with OSB + Gypsum if that makes any difference.

Thanks in advance =)
 
  • Illustration showing two alternatives for framing around a doorway in a garage wall, labeled Alt. 1 and Alt. 2, with different beam placements.
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It's probably a bit different there, but we cover all the openings and then place the horizontal ones towards - so you get a whole frame around the opening.
 
Thank you very much. I have reached the same conclusion during the day. The electrician wanted them like that too so he had something to fasten the boxes for the switches to.
 
Well, he should probably think about adding an extra block to the box.. It might get a bit too tight for the lining otherwise - at least if you're using 12-56 lining. But maybe he's on top of that..!!
 
Facing the same question. I think option 1 is better as it breaks the thermal bridge around the window. But maybe it won't be stable enough? I'm planning to have interior reveals and wide trim around the window, which should stabilize it somewhat. Has anyone tried this and can share experiences?
 
The horizontal 2"2 runs along the post, cut short pieces in between that are nailed to the post. This way, you have something to screw the board into and the horizontal 2"2 doesn't hang in the air.
 
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