Quote:
Originally Posted by LeftCoaster
You'd be surprised the insulation efficiency one can get out of a quality glazing system. Regardless, I was referring to the economics of building a window wall tower Vs architectural concrete or more elaborate cladding materials.
Clearly any inefficiencies of extra windows are considered an acceptable trade-off by buyers for the beneficial views/natural light.
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I would be indeed... best I have seen and used is R7.4 using a four element window. Typically we see R2-4 at best.
We partnered to develop a composite curtain wall system (
http://glascurtain.ca) that helps from a thermal bridging standpoint, but glazing/spandrel is still the worst part of the building from a insulation efficiency respect.
Concur.