Thought I would post a couple pics, now that the place is mostly framed out.
Studs and plates are all 2x4s, to which the manufacturer has laminated a 1.5×1.5 layer of rigid iso foam, then an inner nailing surface of 1/2″ OSB. Maker is Nordic Engineered Wood Products, of someplace in northern Quebec.
Insulation in walls will be 3″ nominal thickness spray iso foam, the fillets of which will pretty much ensure no delamination occurs between the rigid foam thermal break and the studs. Or so the owner hopes.
My apologies to the dialup folks.
I helped frame for a couple days, and in my experience, the loss from delams was pretty minimal. The way that Nordic makes these, the lams are resawn once the glueup is done, with the inside parts measuring about 1-3/8″, so that any ganged members are tight, wood to wood.
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I am curious about the price per 2x4.
Also, what was the reaction of the building inspector(s)?
In your opinion, could this concept be duplicated with sheets of foam and OSB, cut into strips and glued onto "regular" studs?
Quantum materiae materietur marmota monax si marmota monax materiam possit materiari?
Can't help w/ price. Didn't ask. Whaddya payin' for a 2x6x8?
What building inspector? We are in one of those many, many parts of the country where inspection does not exist. Permits, yes. Permit fees, yes. Inspection, no. C.O. at the end, for another fee, if you need one. Otherwise, site visits are not done by Mr One-And-Only-Inspector.
Yes, you could make these, but who would bother? The labor would be a killer.
Mike Smith, well known here at Breaktime for his photo essays, from foundation to finish, would prefer to put the stop to thermal transmittance by building a "Mooney wall" system, essentially a 2x4 frameup with 2x2 horizontal strapping at 16" o.c. inside.
This is just another way to skin the cat.
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
It's a cool idea. (Or is it "temperature neutral"?)As far as labor being a killer, if it were a DIY project then often the labor is moot. Dollar savings is more a driving force.I was curious if an inspector would care that the drywall would not be screwed to a stud.Those studs remind me of an abbreviated version of a foam & osb sandwich structural wall system.
Quantum materiae materietur marmota monax si marmota monax materiam possit materiari?
I was curious if an inspector would care that the drywall would not be screwed to a stud.
If such a comment were to ever come from Mr Know-It-All, I would send him up the road and insist that he fail all the places hereabouts built with SIPs and ICFs, then when he's done doing that successfully, come back and talk to me.
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
HHHEEEEEEE! I guess you told him!
Side note- I used to stay at a lodge up in Keene. Adirondack mtn. lodge maybe. Dirt cheep and much like a youth hostel . Do you know if it's still around?
just curious... why not frame with standard 2x stock... sheath 100% with foamboard... then add nailing strips/fir it out... same thermal break
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frame with standard 2x stock... sheath 100% with foamboard... then add nailing strips/fir it out... same thermal break
Here's what somebody asked after you did just that.
"Why didn't he just use those thermally broken studs you can get from Quebec?"
;-)
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
just curious... why not frame with standard 2x stock... sheath 100% with foamboard... then add nailing strips/fir it out... same thermal break
Then it's harder to spray in the foam to seal the outside sheathing to the studs and the interior foam to the interior nailing strip.
Guess it depends on what your insulation will be???
Quantum materiae materietur marmota monax si marmota monax materiam possit materiari?
Interesting product. The blue foam looks like extruded polystyrene, are you certain that it's iso?
Also wondering what do you mean when you say "the loss from delams was minimal"?
Thanks for posting.
Iso is just my quickspeak for polyisocyanurate. Dowboard is iso. Thermax is foil-covered iso.
Read about it at wiki: http://en.wikipedia.org/wiki/Polyisocyanurate
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
Just a clarification.
Not all "Dowboard " is. Unless Dow is now marketing their ISO under the name "DowBoard" http://building.dow.com/na/en/products/insulation/rigidfoam.htm#Polyisocyanurate
They can't get your Goat if you don't tell them where it is hidden.
I have to say it doesn't look like polyiso to me, i've never seen it blue all the way through, just on a surfacelooks like xps, dow xps is blue throughout.