Environmental Impact
JELD-WEN and Serious Materials are members of the Green Building Initiative, an organization promoting credible and practical green building approaches for residential and commercial construction.

JELD-WEN supports the efforts of the Sustainable Forestry Initiative. SFI certified wood is available for our Custom Collection Wood windows and patio doors

Williams Window & Door is a member of The US Green Building Council, Build Green NM and The New Mexico Solar Energy Association.

Energy Efficiency
Most products we sell meet or exceed Energy Star guidelines for energy efficiency.

Information on U-factor, solar heat gain, and visible light transmittance is provided on the NFRC label. The National Fenestration Rating Council is an independent third party certification organization with industry accepted standards for evaluating and certifying energy performance.

We feature windows and doors from Serious Windows. Serious Windows perform up to four times better than other Energy Star Windows. Serious Windows is the only source of R-5 vinyl windows, and R-7 to R-11 fiberglass windows.

Serious Glass is available for commercial or site-glazed residential applications. With Serious Glass you can environmentally tune a building by using different wavelength-selective films for different building elevations. This simultaneously optimizes elevation daylight transmittance and addresses solar gain concerns.