Curtains not only add style, color, and privacy Magnifier Engine Review to a room, they also act as an insulating blanket for one of the most thermally conductive parts of the house. the windows. Curtains are even more effective at sealing off a window when they have thermal backing. Thermal backing is usually foam because foam permits water vapor to move through the fabric rather than condensing on the cold side toward the window and causing moisture problems. An additional benefit to thermal curtains is that they help deaden noise from outside that is normally transmitted into the room by the window glass. In the summer, the curtains also block hot sun. 

 Thermal curtains can be made even more efficient by adding a valance with a top. Usually, window valances conceal the curtain hardware such as the rods and brackets. However, if the valance has a top cover, warm air that would normally circulate down between the cool glass and the back of the curtain is blocked. Valances can be made with plywood and then stained, painted, or covered in fabric. Another option is a window quilt. These are blanket-like shade that roll down to cover the window. Some are held tightly in place by magnetic strips attached to both the quilt and the window frame.

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