a snug foam to foam friction fit panel joint

There is no perfect panel Chris, each has it's pro and cons. Experience allows one to adapt their building system to any short comings a particular product may have. That's why people new to Metal SIPs should consult experts like us so they don't have to repeat the learning curve we went through.

Posted By SimonD on 06 Oct 2011 12:31 PM


Permatherms/Precision Foam Fabricators joint is very loose and the foam cores can bottom out and meet because the sheet metal is flexible and easily flexes out of the way because of it's flat profile. That makes the panel hard to seal and maintain it's weather-tightness especially on a roof condition where one panel will shear past another and break it's seal if you stand on the roof near the lock on longer spans.

Simon; my gosh from the frying pan into the fire now implying that both manufacturers shear at the joint?

I have installed many from both manufacturers and have never had that occur?

Where have you seen this happen?

Therma Green out of Alabama www.thermagreenpanel.com

koz407; thermagreen is an insulated wall system not a SIP

not catching your drift, Therma Green is structural is there a criteria I am missing?

Posted By koz407 on 13 Oct 2011 03:20 PM
not catching your drift, Therma Green is structural is there a criteria I am missing?

Yes, wood stud walls are structural too, but when you, assemble and insulate them they don't magically become SIPs................. http://en.wikipedia.org/wiki/Structural_insulated_panel

Drew,

Take a look at our Pre-Insulated Steel Framing system. Easy to install yet very strong with high thermo rating.

David
KwikBuildPanels.com