Stryped sez: "My concern was with 4 foot on center whatever I use for the ceiling (osb, drywall,
foam board, whatever) might sag? Is this true?"

I can visualize drywall sagging some. Why not put some 2 x 4 headers in between the trusses?

Bob Swinney


"stryped" wrote in message
...
On Oct 13, 11:18 am, Yooper wrote:
On Tue, 13 Oct 2009 15:16:37 +0000, Doug Miller wrote:

If the trusses are spaced 4' on center, you have much greater worries
than any ceiling you might put up there. That's *much* too far apart to
adequately support the *roof*.

Did you mean 2' on center?

4' centers are acceptable (at least in Michigan) for a metal roof.
Not so with a wood roof and shingles, they must be 24".

They are 4 foot on center. Metal roof. Walls are 2x4 stick built 2
foot on center studs attached directly to a concrete pad. (I think the
pad is thicker around the perimeter.)