Cost-Effective Window Inserts Can Insulate Older Windows Without Replacing Them (Review)

By Scott Cooney Older windows can be a huge waste of money when you try to heat or cool your home. R values (a measure of insulation, measured in “resistance” of heat passing from one place to another) are very, very low for older windows. Whereas your walls might have an R value of 20-40, depending on local zoning codes, how well built your home was, and how much insulation was added, your windows might have an insulation value of 1 or 2.
Cost-Effective Window Inserts Can Insulate Older Windows Without Replacing Them (Review) was originally published on CleanTechnica.
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