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...
<< 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? >>
The people that build with it don't have to live with it. OSB is still resin
and wood scrap. For putting down a quality hardwood floor, IMHO nothing beats
plywood. Before plywood the old fashioned way was diagonally laid tongue and
groove boards, Haven't seen that anywhere for years except in old houses.
Sheathing was done that way , too, in the better structures. Durability is not
a very high priority these days...
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