On Apr 10, 1:10*pm, " wrote:
Hi!

I've purchased a new tongue and groove solid wood floor that I'm going
to be putting down. *I tore the old floor up, and right now, there are
1x6's perpendicular to the joists as the subfloor.

Everything I read says you should install the wood floor perpendicular
to the joists. *Now, should I install the wood floor perpendicular to
the subfloor 1x6's, or perpendicular to the joists?

Thanks!

Perpendicular. You already have plenty of stiffness in the direction
of the joists. You need stiffness in the other direction now.