On 6 Sep 2006 13:58:06 -0700, "
wrote:

Yes that is correct the strapping would run eave-to-ridge.... Are there
any products out there that I could slide in under the current
sheathing to create channels? It would be nice to just have to go over
the old sheathing with plywood and not have all of the problems
associated with spacing the plywood up. I was wondering if I could
remove some of the old sheahing and slide some kind of duct in between
the sheathing and the insulation???

Not that I can think of, no. And it would compress the existing
insulation probably more than you want, anyway.

Look at it this way, This is an excellent opportunity to
add a 1" layer of urethane foam on TOP of the existing
deck. (Foam, then sleepers, then nailable deck.)