Q&A for How to Install Window Insulation Film

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Question

When should I install window insulation film?

Community Answer

Mid to late fall. Make sure it's before winter as the cold will produce more moisture!

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Question

If I want to reuse the film, can it be 'relaxed' in any way?

Community Answer

No. Once the film shrinks, it stays shrunk. If you want to reuse the film, you can apply it carefully, stretching it to remove wrinkles and skip the hair dryer step.You can then remove the film and tape when warm weather returns. You will need to carefully fold the film and put in a container to keep it clean. I have tried this and have not been pleased with the results; better to just get new each season.

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Question

Does the film stick to my window?

Community Answer

It covers the window to create an extra protective layer from droughts, and an extra layer to keep heat in.

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Question

How long does it take to blow dry?

Community Answer

It takes about 30 hours.

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Question

Is it necessary to shrink the film with a blow dryer?

Community Answer

It's not necessary, but it's very difficult to eliminate all the wrinkles just by stretching it tight while placing it on the tape. Shrinking it with a blow dryer will eliminate the wrinkles and make it much nicer to look at.

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Question

Why does the sheet have 2 layers? When I cut, one layer is not stuck to the tape. Can I use 1 layer only?

Community Answer

You have to separate the films. Kits usually come with several films so you can do a few windows. So yes, you have to separate; you can't apply two films.

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Question

How far from the window should plastic be?

Community Answer

Window insulation plastic needs a small air gap to effectively trap heat. If the plastic directly touches the glass, the insulating capability is significantly reduced. Install an air gap of at least a quarter-inch.

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