Serious Windows

Serious Windows

Credit: Serious Energy

What makes this product green?

  • Reduces heating and cooling loads
  • Durable or low-maintenance


Serious Materials, parent company of Alpen Energy Group, has added Alpens’s glazingWhen referring to windows or doors, the transparent or translucent layer that transmits light. High-performance glazing may include multiple layers of glass or plastic, low-e coatings, and low-conductivity gas fill. to the company’s own technology to create a variety of high-performance fiberglass windows under the Serious Windows brand. These windows use a combination of suspended low-emissivityAmount of heat radiation emitted from a particular body or material. Emissivity is expressed in a fraction or ratio, with the lowest values indicating low emissivity and the highest indicating the high emissivity of flat black surfaces. (low-e) films and direct-deposition low-e glass coatings, low-iron glass (which increases visible light transmittance), low-conductivity gas fill (including kryptonA colorless, odorless inert gas, often used with argon in fluorescent lighting and sometimes used as gas fill in high-performance glazing. and xenon), fiberglass frames insulated with soy-based foam, triple-fin weatherstripping, and low-conductivity glazing spacers. The resulting windows have unit R-values as high as R-11.1 (U-factorMeasure of the heat conducted through a given product or material—the number of British thermal units (Btus) of heat that move through a square foot of the material in one hour for every 1 degree Fahrenheit difference in temperature across the material (Btu/ft2°F hr). U-factor is the inverse of R-value. 0.09) for the company's high-end fixed window. Serious Windows are available as fixed, casement, and awning windows and as patio doors, and come in five interior colors and four exterior colors. Serious Windows also offers a vinylCommon term for polyvinyl chloride (PVC). In chemistry, vinyl refers to a carbon-and-hydrogen group (H2C=CH–) that attaches to another functional group, such as chlorine (vinyl chloride) or acetate (vinyl acetate). window that provides a unit R-value of 5.6 (U-factor 0.18).

Manufacturer Information

Serious Energy
1250 Elko Dr.
Sunnyvale, CA 94089
Phone: 408-541-8000
Fax: 408-716-2438
Toll-free: 800-797-8159

Listed in: Composite Windows
Our guide lists products from the Greenspec® Online Directory of environmentally preferable building products. Manufacturers and/or their representatives should visit this page to learn more about suggesting their products for inclusion.