[Redcoat LI]

Not neccisssarily,it all depends on what you are going to have as a siding product.

A Brick facade can pretty much be sheathed with anything,on big projects we use Densshield,or Brownboard(exterior sheetrock),your brick ties get attatche to the studs and that's it.

Clapboards,Shingles and vinyl require a nailable surface,Horizontal siding should be nailed directly into the studs,it is nearly impossible to do that with shingles,and vinyl is attatched with roofing nails,and is usually nailed to the sheathing.

I've used many types of engineered lumber,P.S.L's L.S.L's,T.G.I's etc,don't be afraid of new technologies,they have to be rated before use by various state and federal agencies as well as private agencies and associations.

[Fierce Allegiance]

Don't be afraid of new technologies

Wasn't it the fire rated plywood that delaminated and all had to be replaced?

[Petronski]

Thanks for the info. By my very nature I distrust newfangled substitutes for tried-and-true standards.

[The G Man]

I sent you a PM