Share:

If you’ve ever shopped for windows, you’ve probably encountered the occasional unfamiliar term. Key among those is the R-value, a specific rating that refers to the window’s ability to conduct heat. Of course, that basic information alone isn’t usually enough to make a decision. That’s why the experienced window and door specialists at Shepard’s Glass in Kalispell, MT, make it their mission to provide consumers with everything they need to know. Before you make a purchase, keep these facts about R-values in mind.

All About Window R-Values

1. Heat Resistance

windowsThe R-value is a measure of heat resistance. It specifically indicates the rate at which the window glass resists the transfer of heat. It’s a positive sign when the number is high—it means that the glass works extra hard to prevent conduction, which translates into reduced heat loss in your home. That means you’ll save money on your utility bills.

2. U-Factors

You know you’re purchasing a high-quality window when it has an elevated R-value and a low U-factor. The latter refers to the rate of heat flow through the glass. If the number is high, it means there’s far too much heat being lost through the window. A low value indicates that your windows are doing a good job of locking in the heat.

3. Preferred Value

You can determine the most appropriate R-value for your windows based on a few factors. A single-pane window does not provide sufficient insulation, and will generally have an R-value of no more than one. Double- and triple-pane windows increase the value and indicate improved insulation. You can find even higher R-values in windows with low-E glass coatings, or low emissivity. The coating prevents excess heat transfer.

Whether you’re shopping for high-quality windows or doors for your home, you can rely on the experienced staff at Shepard’s Glass to fulfill your needs. Visit the company’s website to learn more about their products, including wood and vinyl windows, or give them a call at (406) 755-4540 for more information.

tracking