Is $2,462 to spray 5" open cell foam on rim joists a fair price?
Project Details
My house is cantilevered, the rim joists are 3’ deep and I’ve looked into doing it myself but I can’t find a way for me to effectively spray foam that deep without special equipment. I’m in Kansas so definitely get a lot of cold and hot. The contractor didn't say anything about a vapor barrier.
Quote Details
This quote is for spray foam insulation for the rim joists of my cantilevered house. - Rim Joist Depth: 3 feet - Total Length: 176 linear feet - Material: 5 inches of open cell foam - Contractor Recommendation: Open cell foam is suggested due to the deep cavities (over 10-12 inches) to prevent production issues that can arise from building closed cell foam too thick in such depths.
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More Details
Category
Insulation
Price
$2,462
Quote Date
December 4, 2025
Location
Kansas
Insulation Type
Spray foam
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