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Serving Western Washington since 1998.
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Interlocking Weather-stripping
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The best type of weather-stripping for double-hung windows is metal interlocking weather-stripping. See diagram to right.
It will last 100 years (and counting) without tearing, compressing, or otherwise failing. Because of its longevity it is the only type of weather-stripping I am willing to install. It comes in both zinc and bronze. Weather-stripping reduces air infiltration and heat loss. It can cut your heating bill (by up to 25 %). It reduces noise (by 30 decibels). Properly installed it will eliminate rattling of your window. I put this YouTube video together to show what is involved in installing this weather-stripping. Please note that the manufacturer "Accurate Weatherstripping" mentioned in the YouTube video is no longer in business. You will find alternate sources here: Resources/Interlocking Weather-stripping For instructions on how to make a jig to cut the grooves using a circular saw, please see this PDF. |
 Diagram interlocking weather-stripping from Dorbin Metal Strip Manufacturing Co., Inc. catalog. Click to enlarge. To watch the video full screen click on the YOUTUBE text below the video. |