What are insulated window coverings?
In simple terms, it’s a blanket (quilt) to reduce heat transfer through your windows. In cold weather, windows are usually the single largest source of heat loss from our homes. While walls vary in their insulating capacity from R12 (common building code value in cold climates) to R40 (typically considered super-insulated), windows may be as poor as R2. Low-Energy, argon-filled, double pane, vinyl-cased windows are typically R3 to R4. Very high quality, high efficiency windows may achieve R6 or R7. I don’t have any scientific data, but I’m guessing the quilt we use on our window (as illustrated here) has an effective R-value of about 4 to 5. That’s about the same as an inch of styrofoam board. It certainly made a huge difference in the perceived warmth in the room. There are 3 ways windows lose heat from your house: conduction, convection and radiance. Conduction is the simple transfer of heat energy by contact from the warm air in the room, to the glass, to the cold air outside. (In t
