Quote:
Originally Posted by trueviking
It'll be interesting to see what the final design for 300 Main is. It's rendered as all glass. Even spandrel has reduced insulation from solid walls.
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Why is spandrel so bad? Glass's r value isn't crazily different than a lot of exterior finishing materials, and if you're backing it with whatever you want, why wouldn't it insulate as well as any wall. Is it the porous nature of glazing?