Zip-R Sheathing
Zip-R Sheathing
(OP)
http://www.huberwood.com/assets/user/library/ESR-3...
Has anyone here spec'ed this stuff? It is basically OSB with foam attached on the stud side so the fasteners must cantilever out thru the foam when loaded in shear.
They are getting 215 PLf of shear capacity with 10d commons spaced 3"/12" going thru 2" of foam. Wow, I would have never guessed that. I am skeptical enough that I have not endorsed this product on any of my jobs. I am also concerned since most framers use box nails and not common nails so the capacity will be less.
Also, it does not seem to be rated for portal frames.
Thoughts?
Has anyone here spec'ed this stuff? It is basically OSB with foam attached on the stud side so the fasteners must cantilever out thru the foam when loaded in shear.
They are getting 215 PLf of shear capacity with 10d commons spaced 3"/12" going thru 2" of foam. Wow, I would have never guessed that. I am skeptical enough that I have not endorsed this product on any of my jobs. I am also concerned since most framers use box nails and not common nails so the capacity will be less.
Also, it does not seem to be rated for portal frames.
Thoughts?






RE: Zip-R Sheathing
As for the shear panel... if they have the testing and the verified ICC reports i do not have any reason to doubt it. As for the nails... I can only do so much to help contractors who get in their own way. Specify a shank diameter and make it obvious on the plans (do not hide in a book spec). If they use the wrong nail then thats on them, same thing if a contractor wants to use the wrong grade bolt or the wrong size beam.
RE: Zip-R Sheathing
It will be driven by Energy Code compliance and structural won't get veto power.
Had it added to a job at 95% last month. Requires us to adapt and get creative.
You won't have nearly the design flexibility as OSB/PW (only two nail spacings, for instance, and no opportunity to increase sheathing thickness). Use the interior GWB to help if you're wind-controlled, and add flat straps or get creative (propritary strong-frames, etc) where that doesn't work. I'd suggest using the perforated shearwall design method for this. Prescriptive designs like "portal frame" aren't intended for this product.
RE: Zip-R Sheathing
RE: Zip-R Sheathing
Also, I guess we cannot count on the OSB holding down the top plate anymore or tying the wall to the floor band.
Sheesh!