11 Feb '13, 5pm

Floor to ceiling glass is not green.

Floor to ceiling glass is not green.

Cities like Toronto, New York or Chicago get cold in the winter and hot in the summer, yet almost every new condo and office building is designed with floor to ceiling glass. I have been complaining about it for years (see links to the left), about what Andrew Michler calls the "the very contagious disease waytoomuchglassia." At Building Science, John Straube does the math and shows how really bad they are. He explains: Glazing systems, including almost all modern high-performance ones, have very little ability to control heat flow and solar radiation. Older windows also did little to control heat loss and solar gain. Hence, most older buildings had restrained window-to-wall area ratios. Most of the tremendous performance gains in glazing technology over the past 25 years have been squandered on increased window area, not improved performance. 56 Leonard /Promo image He go...

Full article: http://www.treehugger.com/green-architecture/floor-ceilin...

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