29 gauge liner sheets or galvanized "barn tin" would span the 4'
spacing just fine, and hold insulation if desired. I would be
confident the trusses could take the load.

--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




"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.)

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