Cob RE: Roofing Materials Data

[SANCO Enterprises <Paul & Mary Salas>]

Roofer's Delight,

Here is a really neat site for data on roofing materials
http://eetd.lbl.gov/coolroof/.  It also has some good article links too
such as

GEOTHERMAL HEATING/COOLING SYSTEMS

The application of geothermal heating/cooling, also known as ground
source heat  pumps, has been named "the most energy-efficient and
environmentally sensitive of all space conditioning systems", by the
Environmental Protection Agency. The system's basic concept takes
advantage of the earth's constant temperature, approximately 55 degrees,
to heat and cool a building. By tapping this steady flow of heat from
the earth in the winter, and displacing heat in the earth in the summer,
a geothermal heat pump can save homeowners 40 to 70 percent in heating
costs and 30 to 50 percent in cooling costs compared to conventional
systems.

Paul