Is $3 to install open cell spray foam on knee walls and bonus room ceiling a fair price?
Project Details
One-story house with a bonus room upstairs surrounded by attic space. The room gets extremely hot even in mild weather, and the A/C runs constantly. Two sloped ceiling portions cannot be accessed for foam without removing drywall, so they will remain as-is.
Quote Details
Insulate the bonus room envelope to improve thermal performance. - Install 5 1/2 inches of open cell spray foam - Apply foam to all accessible knee walls bordering the attic - Remove existing blown-in insulation over the bonus room ceiling - Install spray foam on the bonus room ceiling deck - Note: excludes sloped ceiling sections and window wall
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More Details
Category
Insulation
Price
$3
Quote Date
April 17, 2026
Insulation Type
Spray foam
R Value
20
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