The coating may be applied to one or more of the glazing surfaces facing an air space in a multiple-pane window. It can also be applied to a thin plastic film inserted between panes. The coating limits heat flow between panes by reflecting heat back into the home during cold weather and back to the outdoors when the weather is warm.
In turn, this has the effect of increasing the insulating value of the window. Most window manufacturers, as such, now offer windows and skylights with low-e coatings. The spaces between window panes can be filled with gases that insulate better than air. Argon, krypton, sulfur hexafluoride, and carbon dioxide are among the gases used for this purpose. Gas fills add only a few dollars to the prices of most windows and skylights. They are most effective when used in conjunction with low-e coatings.
For these reasons, some manufacturers have made gas fills standard in their low-e windows and skylights. The insulating value of an entire window can be very different from that of the glazing alone. The whole-window U-factor includes the effects of the glazing, the frame, and, if present, the insulating glass spacer. The spacer is the component in a window that separates glazing panes.
It often reduces the insulating value at the glazing edges. Since a single-pane window with a metal frame has about the same overall U-factor as a single glass pane alone, frame and glazing edge effects were not of great concern before multiple-pane, low-e, and gas-filled windows and skylights were widely used. With the recent expansion of thermally improved glazing options offered by manufacturers, frame and spacer properties now can have a more pronounced influence on the U-factors of windows and skylights.
As a result, frame and spacer options have also multiplied as manufacturers offer improved designs. Window frames can be made of aluminum, steel, wood, vinyl, fiberglass, or composites of these materials. Wood, fiberglass, and vinyl frames are better insulators than metal. Some aluminum frames are designed with internal thermal breaks, non-metal components that reduce heat flow through the frame. Sierra Pacific Windows focuses on crafting innovative windows and doors with time-tested attention to detail; industry-leading energy efficiency; sustainable building practices that put the environment first, and service that puts you first.
Visit the Sierra Pacific website at: www. Velux Canada Inc. They have provided quality skylights for over 25 years. Visit the Velux website at: www. Norwood, a division of West-Wood Industries, is a family-owned manufacturer of some of the finest wood windows and doors in North America.
Specifically designed to withstand the harsh realities of our winters and made with the preservation of our environment in mind, all Norwood products are built to last a lifetime. Norwood is proudly Canadian. Visit the Norwood website at: www. We specialize in quality windows, doors and industry leading customer service.
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