What is “R-Value”?

Lots of people call in and ask about what the R-Value is of our shades. R-Value is defined as: “the capacity of an insulating material to resist heat flow. The higher the R-value, the greater the insulating power.”

Our shades have different R-Values depending on the type of shade and how many panes of glass the window has. Sidetracks increase the insulating power as well.   Below is a list of our shades and how they compare to each other:

Compare R-Value by Fabric Type Shade Only Single Pane (+1) Double Pane (+1.8) Triple Pane (+3.5)
Double Cell Light Filtering 2.8 3.8 4.6 6.3
Double Cell Light Filtering With Tracks 3.3 4.3 5.1 6.8
Double Cell Black Out 4.0 5.0 5.8 7.5
Double Cell Black Out With Tracks 4.7 5.7 6.5 8.2
Single Cell Light Filtering 1.6 2.6 3.4 5.1
Single Cell Black Out 2.5 3.5 4.3 6