Fiberglass Insulation
$0.70/sq ft
Estimated value as of 2026 · HomeAdvisor, Angi, HomeGuide (material cost averages from $0.30-$1.50/sq ft, typical ~$0.70)[1][2][7]
Fiberglass insulation is a common, affordable batt or roll building material used to insulate walls, attics, and floors for thermal efficiency.
Fun fact A single roll covering 40-75 sq ft typically costs $20-$90, making it a popular DIY option for homeowners.[7]
insulationfiberglassbuildinghome-improvementr-value
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