What Does It All Mean? Understanding R-Value Terminology

You’ve probably have heard the phrase “R-Value” before, but you might be asking yourself, what does it mean?

Simply put, R-Value is a measure of a given material’s resistance to heat flow. Basically, how well this material resists both heat gain and loss. The higher R-Value the material has, the better this material will insulate for you.

Your Windows and R-Value 

Each one of your windows in your home has an R-value. Typically, they range from around .9 to 3.0. To help you wrap your head around this, the insulation used to produce a modern home has an estimated R-Value in the low 40s.

Factors that Influence the R-Value of Your Home’s Windows

  • The “Tightness” of the installation
  • The material you use to glaze
  • How many layers of glass there is
  • Thermal resistance of the frame and spacer materials
  • The air space between the glass layers

R-Value and your Window Treatments

When you add cellular honeycomb shades to your untreated windows, they can help block as much as 62% of the heat transfer that goes through the window pane according to Alliant Energy.

Out of all the elements in your home, windows area the greatest source of energy loss. This is because that heat always moves from warm to cold areas. During the wintertime, all the warm air that you pay for is trying to escape through your windows. When it’s summertime, the sun beats down and the temperature rises in your home.  This puts more stress on your air conditioner, which adds to your utility bills.

What’s a good way to conserve energy and cut down on you  utility bills? Energy efficient window treatments, they’ll stop energy loss in the winter and cut down on the strain on your air conditioner in the summer. Our EcoSmart cellular and honeycomb products will provide you with superb insulating capabilities.

How do other types of window treatments compare to Cellular Shades?

For More info see our R-value comparison charts….

The R-Value of Our Cellular Window Treatments

Cellular Shades R-Value Single Pane R-Value Double Pane Shading Coefficient UV Light Transmission Visible Light Transmission
Light Filtering 3.7 4.6 .38 1% 11%
Black Out 5.0 5.8 Not Yet Available <1% <1%

*Data is based on statistical reported values of equivalent products with the same construction.

Single Pane – Found in more than half of America’s homes this is a thickness of a glass in a door or window.

Double Pane – This is two panes of glass, which is separated by air space. These windows are often found in newer homes.

A Quick Guide to Window Treatment Energy Saving Effectiveness

There are two numerical values that can help you compare the energy saving of window treatments, they are their R-Value and Shading Coefficient.

R-Value is used to measure the fabric’s ability to reduce the flow of heat through it. When you have a high R-Value, this means your fabric has a better resistance to heat loss and gain, which helps you save on your utility bills throughout the year. When you purchase our double honeycomb cellular window shades, the soft durable fabric is built to withstand the heat and the cold for years to come!

Shading Coefficient this particular value is important when it comes to seeing how a fabric handles hot water to reduce the heat from entering into your home. A shading coefficient of 0.35 means 65% of the heat stays outside. When it’s hot outside, the heat that enters through your windows can raise the temperature of a room by nearly 20 degrees, this will increase the workload for your air conditioner. When your window shade has a lower coefficient, it means less heat gain and lower cooling costs for your home!

Want to learn more about our cellular honeycomb shades and their insulating properties? Contact a member of our team today at (877) 338-9392 and we can get started on a quote for your window shades!