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Old 10-13-2012, 08:01 AM   #74
G-Sun
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Quote:
Originally Posted by Tod View Post
The only potential problem could be the top plate of the outside walls. Geir mentioned that it is just one 4x4, however, if the top plate has continuity for the whole width of the room then it's not a problem.

One thing I might add is that it might be best to tie the existing and new rafters together at the peak just below the existing ridge-board (I'm assuming it has a ridge-board). This could be done with 2x4s but there may be a way to do it with metal straps. That would also take care of any potential problems with the outside upper plates.
There is really no top-plate. Just a 1x4" under the rafters.
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