Window what? Here is some of the language that matters when talking windows:

• Glazing is simply the glass used in the window. The number of layers of glazing (single, double, or triple). The presence or absence of the other items in this list affects a window’s total energy performance. Glazing coatings can substantially affect a window’s U-factor, or degree of insulation against the outdoors. Our standard windows come with double glazing.
• Low-E stands for low emissivity, the window’s ability to reflect rather than absorb heat when coated with a thin metallic substance. Low-E coatings also keep heat from the sun out in the summer. Our standard windows come with this coating.
• Gas fills typically consist of argon or krypton gas sandwiched between glazing layers to improve insulation and slow heat transfer. They often won’t work at high altitudes because differences in air pressure cause them to leak out.
• Spacers separate sheets of glass in a window to improve insulating quality; the design and material are important to prevent condensation and heat loss.
• Frame materials include vinyl, wood, aluminum, fiberglass, or a combination of those. They each have different strengths: Vinyl windows are good insulators and are easy to maintain. Wood offers a classic look but is affected by moisture changes and needs regular maintenance; fibreglass is very stable and low-maintenance but can be expensive; and aluminum is lightweight, stable, and a good sound proofer but is a rapid conductor of heat, making it a drain on energy efficiency. We proudly offer vinyl windows!