aspenite

[papadave]

Was wondering if you can explain why it makes a difference to install aspenite with this side down that the manufacture recomends. Seems to me that a smoother side would be better exposed to the weather or is there a better theory

[David Oxhandler]

Aspenite - historically, the proprietary brand name for MacMillan Bloedel’s (now
Weyerhaeuser) waferboard and OSB products; also used generically in the market place.

Aspenite is a man made composition board. I have little experience with this product but it has been my experience that this type product may be treated for greater moisture proofing on one face, like hardboard siding, and so probably comes with installation instructions that say "this side up".

I did a quick search of the internet and found very little about this product so this is my best educated guess...

Anyone else have an idea ?

[MobileHomeInspectors.com]

You may be best to call or email the manufacturer. However my experience is "follow the directions" and thing usually work out the best.
Greg Filian
MobileHomeInspectors.com