Consider these frequently used terms: sustainability, carbon
dioxide emissions, greenhouse gases, carbon footprints, cool
roofing, climate change, Title 24 and energy rebates, to name a
few. Each of these connote a necessary change in our political,
environmental and economic thinking, and they all can affect
building envelopes—especially roof systems.
The recent confluence of these political, environmental and
energy-related issues has afforded many opportunities for
reflective roof coatings. (Reflective roof coatings have solar
reflectances greater than 0.70 and thermal emittances greater than
0.75, according to ASHRAE 90.1, "Energy Efficient Design of New
Buildings Except Low-Rise Residential Buildings.") Being aware of
these opportunities may allow you to generate new business for your
Although the terms "sustainable," "cool" and "green" are being
used more frequently in the construction industry, defining
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