I found a very interesting product during a recent building show.  It is the Envirowall framing system with built in thermal break.  The weakest link in wall construction that utilizes spf is the thermal bridging caused by the wood studs.  The wall assembly loses about 25% of it’s R-value due to thermal bridging.  The Envirowall system eliminates that with 1 1/2″ thermal break built in.  It was actually brought to my attention by an architect who wants to spec the Envirowall system and BaySeal closed cell foam into a 60 unit project that he is designing in Bethel, Maine!  If you would like more info on Envirowall, please contact Jean-Marc Dubois 518.869.9116 [email protected]