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2012 Engergy Code Details -Continous Insulation Precast Wall Panel

2012 Engergy Code Details -Continous Insulation Precast Wall Panel

2012 Engergy Code Details -Continous Insulation Precast Wall Panel

(OP)
The 2012 Energy code (so I'm told) sorta (again I hear this is debated) requires Insulation to be continuous throughout the entire building envelope or something to this effect. So the Architect was asking for any ideas on how the roof insulation could be butted to the insulation inside the precast wall panel at a parapet condition (or even for no parapet). I've heard that precaster's have tried to discontinue the back side of the panel so that the insulation could meet the roof insulation and avoid a 'cold joint'. However there were issues during erection with cracking. Not to mention more expensive panels.

Anyone have an advice on this?

EIT
www.HowToEngineer.com

RE: 2012 Engergy Code Details -Continous Insulation Precast Wall Panel

Seems like if the concrete at the parapet provides equal or better thermal barrier than the insulation that would be adequate.

"Look for 3 things in a person intelligence, energy and integrity. If they don't have the last one, don't even bother with the first 2. W. Buffet

RE: 2012 Engergy Code Details -Continous Insulation Precast Wall Panel

Its done all the time, check out the thermomass system. The inside panel stops, the roof insulation comes over and butts into the wall insulation, and the parapet continues up. Of course the height of the parapet dictates the thickness of the parapet.

Specialized panels will cost more. Cracking is a function of design, it will crack if not designed for and controlled.

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