Winter window insulation question

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Fvsiegel
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Joined: Thu Nov 07, 2019 12:47 pm

Winter window insulation question

Post by Fvsiegel » Thu Nov 07, 2019 12:53 pm

Was hoping to get some opinions on insulating windows that need allow light in.

1. What do you consider better:
shrink wrap
2 mil clear plastic
4 mil plastic

2. With the idea that the important part of insulating is the air gap between the window and the plastic, do you think (given the space) repeating layers of plastic with a gap would significantly improve insulation?

Thanks in advance!

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emtnut
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Re: Winter window insulation question

Post by emtnut » Thu Nov 07, 2019 1:05 pm

I thought that the shrink wrap for windows, was only draft protection.
If you used the 2 or 4 mil plastic, then you would have to either tape or use acoustic caulk to seal it.

It might add insulation, but I'd think it would be very minimal.

Hang on thou, Shannon or Spruce will chime in soon.
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A. Spruce
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Re: Winter window insulation question

Post by A. Spruce » Thu Nov 07, 2019 1:08 pm

I don't have any experience with plastic layer methods, but you are correct, the insulation comes from the trapped air space. Shrink wrap will probably have the highest visibility, I don't think thickness of the plastic will make much difference. Multiple layers with air gaps in between will add additional insulation.
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Shannon
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Re: Winter window insulation question

Post by Shannon » Thu Nov 07, 2019 11:21 pm

Insulation will be minimal but draft stop will be high so if this is the issue it will feel much warmer next to these drafty windows.
Not sure how much difference additional layers will help and be practical?
Also not sure different thicker poly will make much difference either?
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Fvsiegel
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Joined: Thu Nov 07, 2019 12:47 pm

Re: Winter window insulation question

Post by Fvsiegel » Fri Nov 08, 2019 10:00 pm

Thanks for the advice

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