fiberglass  type insulation and home safety
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How Much to Buy

Measure your attic's square footage. For loose fill, read labels; each bag lists the required depths for a range of R-values and the number of bags needed to cover 1,000 square feet at those depths. For batts or rolls, calculate the number based on the width and length of the product you're using. In either case, get an extra bag or roll—you really don't want to run out when you're almost done putting it in.
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