On Oct 15, 9:19*pm, "Colbyt" wrote:
"Joe" wrote in message

Thats what i'm putting down, floating vinyl in one room and carpet in
the other. *So it seems I dont have a problem anymore, I just nail
into the joists.

Just remember to stagger all the joints in both directions. *That might
think you think a bit.

And as long as you are not using particle board (which you aren't) you are
not following the failed installation.

Perhaps you like unnecessary flexure in a floor, but can you really
countenance omitting a simple step that would improve the
installation? Instead of having the two layers bonded and acting as
one, you'd prefer to save on a few pounds of screws or nails?

R