On Nov 11, 8:54*pm, George wrote:
On the current series of This Old House, they're (among other things)
putting a two-story, one-room-wide-ish addition on a house. *The
addition has a gambrel roof, at right angles to the main roof.

For the ridge on the addition, they're using a double 2x12. *This seems
kind of massive, to me. *For instance, our (old) barn (not large, but
way bigger than their addition), also has a gambrel roof, and just *a
1-x-whatever for the ridge board.

I'd be interested in any thoughts on this.

Thanks,
George

Two parallel boards are much less likely to warp.