On Thu, 15 Oct 2009 07:49:33 -0700 (PDT), Joe
wrote:

On Oct 15, 5:52*am, Jim Elbrecht wrote:

-snip-

*THEN* you put your 1/4 subfloor in if you need it and use the short
ring nails.

Jim

I already have a subfloor. The subfloor goes on the joists.
Underlayment goes on top of the subfloor.

Brainfart- sorry. I meant underlayment. I don't consider 1/2 ply
to be anything more than a waste of time. 5/8, maybe-- but I
wouldn't do less than a couple layers of 3/4. I'd even prefer
shiplap for that first layer over the joists. Then 3/4 T&G to
smooth things out.

Jim