Contact Us

Member Directory
Event Calendar
About Us
Case Studies
Green Building Resources

Featured Member:
Miles Construction

Benefactor Business Member:

Doors & Windows

In older homes, doors and windows are often one of the largest sources of heat loss in winter due to their low insulating ability and high air leakage rates. Windows are also generally the major source of unwanted heat gain in the summer. As a result, windows are typically net energy losers, and can be responsible for 25 to 50 percent of the energy used to heat and cool homes. However, better insulated doors and windows, combined with proper consideration of their placement and other details, can result in a net energy gain.

Radiant Barriers For Windows

Reflective technology in a transparent screen by controlling the flow of heat through windows.

The manufactures of window covering products design their products to block the sun’s rays from entering the home or office. The measure of effectiveness is reported as a percentage of reflectivity. Simply stated, if the rays of the sun are reflected out of the room; they do not have the opportunity to turn into heat energy inside of the room.

Solar Comfort products are manufactured using products developed by NASA for the construction of their space suits and for other applications in the space program. Having utilized this space technology, the Solar Comfort products have a very high degree of reflectivity.

38.6% Openness with a less than 10% reduction in visibility

71% Blocks Solar Heat/ Reflects inside temps back in
11% Solar Absorption
64% Blocks UV

click here
National Fenestration Rating Council (NFRC)

NFRC is a non-profit organization that administers the only uniform, independent rating and labeling system for the energy performance of windows, doors, skylights, and attachment products. Our goal is to provide fair, accurate, and reliable energy performance ratings

click here
The Benefit of Energy Efficient Doors

Most Americans are already familiar with energy efficient lighting and energy efficient appliances but energy efficient doors? They may sound a bit Star Trek-like but when it comes to door insulation, energy efficient versions have been around for a while and there’s nothing science fiction-like about them at all.

So what makes energy efficient doors different from normal ones? Quite simply, it’s what they’re made of, the way they fit into and seal your doorframe, and the fact that they are nearly five times more insulating than normal wooden doors.

click here
Efficient Windows Collaborative (EWC)
The Efficient Windows Collaborative is excited to announce the launch of a new database of efficiency initiatives including tax incentives, building code changes and legislative initiatives

This site provides unbiased information on the benefits of energy-efficient windows, descriptions of how they work, and recommendations for their selection and use.

This site is sponsored by the EWC with support from the U.S. Department of Energy's Windows and Glazings Program and the participation of industry members.


Mail can be sent to: SiGBA P.O. Box 4245 Truckee, CA 96160

© Copyright 2019 Sierra Green Building Association