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Old 12-19-13, 04:46 AM   #23
ctgottapee
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There needs to be a control comparison to see how much better bubblewrap is than another basic air tight, low perm covering that adequately sealed around a window perimeter so you would know how much was due to the bubble wrap insulating value over air sealing.

Obviously you get the benefits, but the R value is not likely where its at.
New windows are likely less leaky than old single pane, and storm windows often come with an air sealing retrofit on the outside, so the air sealing nature would provide less benefit as noted by the results compared to each.

Caulking the single panes and gasket-ing the window might provide near the same performance
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