Is $21,000 to remove all blown-in insulation and replace with open cell spray foam in the entire attic a fair price?
Project Details
I live in Wisconsin and have issues with ice dams. I had three insulation companies use thermal imaging and readings in the attic. It appears I have air seal issues where heat from my living area is seeping into the attic, and not enough blow-in insulation (currently 15-18 inches, should be 20 inches). My home is a new build, and the insulation is only 5 years old, but it wasn't done well during construction. I've received three similar quotes and am looking for the better value option, as I'm unsure if using all foam is worth the extra $5k. I'm also concerned about potential issues with spray foam in attics, specifically if it makes homes harder to sell due to hidden issues. My home is fairly large, measuring 3900 sq ft including the three-car garage, and I am in the Madison area.
Quote Details
This option involves a comprehensive attic insulation overhaul to address ice dam issues and air leaks. - Remove all existing blown-in insulation from the attic. - Replace with open cell spray foam. - Spray foam will cover the entire attic flat. - Aims to mitigate all air leak issues.
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More Details
Category
Insulation
Price
$21,000
Quote Date
February 2, 2026
Location
Wisconsin
Home Size
3,900 sq ft
Insulation Type
Spray foam
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