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Old 07-12-2015, 01:11 AM   #30 (permalink)
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Originally Posted by Old Tele man View Post
Uh, it (bubble-wrap) holds winter HEAT *IN* just as well as it holds summer HEAT *OUT*.

I have several windows that are left covered year round and have been very pleased with the results.


The south side windows I want to be able to open up to let in sunlight during the day but wonder what can be done to reduce heat loss through the crappy single pane windows.
Bubble wrap has little effect on sunlight entering the room. It allows radiant heat gain while simultaneously reducing conductive heat transfer. That's a win, win, win, in my book.

Each layer of bubble wrap is roughly equal to having another pane of glass. Multiple layers are easy to do if needed.


Be sure to caulk all cracks around the windows to reduce drafts.

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