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I heard this before, don't remember where, but it makes total sense. I was also reading about putting magnets along the sides if you are making it fitted into the window so you could make it cling to the window edges and seal the window some to insulate.
Most windows today are made of either aluminum or vinyl, neither are magnetic. Some of the older windows from the 70s and early 80s were vinyl clad steel though. Velcro works very well to seal the edges. Some will make an insulated blanket that just fits the inside of the window frame and attach velcro all around the edges to make a seal. These are only used at night when heat loss through the glass is the greatest.
I apologize for not being too clear, but I believe they also were attaching a magnet to the window themselves also. However I am not sure that I want to attach magnetic strips to my windows. Oh forgot to mention, my grandma made them how you described with the velcro, but I still don't want that attached to my windows either.
I heard this before, don't remember where, but it makes total sense. I was also reading about putting magnets along the sides if you are making it fitted into the window so you could make it cling to the window edges and seal the window some to insulate.
Most windows today are made of either aluminum or vinyl, neither are magnetic. Some of the older windows from the 70s and early 80s were vinyl clad steel though. Velcro works very well to seal the edges. Some will make an insulated blanket that just fits the inside of the window frame and attach velcro all around the edges to make a seal. These are only used at night when heat loss through the glass is the greatest.
I apologize for not being too clear, but I believe they also were attaching a magnet to the window themselves also. However I am not sure that I want to attach magnetic strips to my windows. Oh forgot to mention, my grandma made them how you described with the velcro, but I still don't want that attached to my windows either.
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