I am getting my subfloor ready to lay 3/4 braz cherry from BR111.

My questions is

Some of these seams where the T & G 3/4" OSB meets are a little high.

Can I sand down these seams that are a little high or can you not sand osb?

Any other suggestions to make sure my floor doesn't squeak once installed?

I have read something about cutting off the tongue of each osb seam so there is a slight gap.

Is this recommended or would it cause problems?

Yes, sand the high places. Don't cut through the OSB to make an expansion space. Those T&G's are there for a reason, to support the panels and keep those panels flush.

Here is a room(actually the whole house, I had to do) where the OSB had been rianed on before the roof went on. It also had some high beams.

Floorguy,

It appears that you sanded the seams also?

I have an orbital palm sander. Do you think that should work ok? What grit paper does best?

I know that my osb got wet when we built this house. The builder put it down befoere the roof was on.

Any other tips/tricks when working with osb to make sure I don't get squeaks later on?

Of course the OSB subfloor went down before the roof was installed. They have to have something to build the walls on, you know. An orbital sander will work to sand the OSB seams but use as coarse of grit paper as you can get. A belt sander or a floor edger would be much better however.

Gary, I know it has to go down before the roof. My wording wasn't too good last post but I meant that I knew it had rained before the roof was on.

Just imagine the guys working without a subfloor to stand on. Be like a circus act.

I only have a couple seams to do so it shouldn't be too bad.

Thanks

What is best for sanding thinset if I need to do that a little?