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Show Windows Important f !n Insulation I Some really hot day, when th mercury is sizzling in the 9n'. -V tbuch the outside of a windu frame or sash. It will be warm but not unbearably hot. Then feei th inside of the same wood and you'll find it much cooler, or about room i ' temperature: 1 I This test indicates a factor in ' home insulation that is generally !H overlooked the important rob V jlayed by windows. A well-insulated house is gen 'K orally considered to be one with i three inches of mineral wool in the .vails and four inches in ceilings :' But in addition, all windows should be made of wood. As the "touch test" shows, most b of the heat hitting the outside ol f he wood is stopped ."cold" before t can get inside and a'ffect room - i emperature. This is because pon. If .erosa pine, the wood generally I .ised for windows, is a poor con' 1 Uuctor of heat, and therefore a ' good insulator. Conversely, in the winter, the ' outside of the wood sash will be colder than the inside, but still not freezing to the touch. This indicates indi-cates that room heat is not being dissipated through the frame and : sash to any noticeable extent. If the amount of wood in a win-dow win-dow seems a small and unimportant unimpor-tant factor in a well-insulated I home, basic arithmetic will prove ' otherwise. Figure out the area ot wood surface in one window (both frame and sash), and multiply that figure by the number of windows win-dows in the house. The total area is surprisingly large, and a definite f factor in home comfort. zrrrrr r |