No, it isn't common to sand the Top Notch or Advantech lines of subflooring.
But we regularly sanded seams of regular tounge and groove plywood.

Shannon Pate

"Jim Hunter" wrote in message
...
Is it common to sand the OSB before laying the finished floor?

"Shannon Pate" wrote in message
...
Top Notch is a premium OSB subflooring. I have alternated between
Advantec and Top Notch for the past couple of years. Personally, I
prefer the Top Notch product. It is very heavy, dense, and stiff. It
has drainage notches in the tongue so water cannot stand on the floor
during construction. And it won't need to be sanded prior to the
installation of finish flooring.

Oh, by the way, it costs a lot more than plywood...

Shannon Pate

"TN" wrote in message
...
My builder wants to use Lousiana Pacific Top-notch OSB for the
subflooring in our new house. I haven't heard much about the product,
can anyone shed some light (pros/cons) to using it?
Thanks!