Is $3,000 to clean and add R38 blow-in insulation to attic a fair price?
Project Details
I had a company quote me for adding insulation to my attic. The contractor mentioned he couldn't add insulation because there are no lower intake vents in my roof (I only have vents closer to the ridge and no soffits). I live in Seattle where it doesn’t get too hot during the summer, so I'm questioning if his assessment is correct. The quote was $3,000 for cleaning and adding R38 blow-in, which sounds super pricey to me, especially since he said he couldn't do it. My house is 1300 sq ft, and the attic is pretty small, so $3,000 seems high. I'm hoping to eventually make the attic a living space or a small office, so I'm considering investing in air sealing the roof plane. I'm also thinking about doing some of the work myself, like vacuuming and laying bats, and I'm wondering about the effectiveness of rockwool or fiberglass roll-in compared to blow-in, which seems messy. I'm also curious if I can do spray foam myself and if the contractor's recommendation of R19 over R38 due to moisture concerns is correct. My furnace is in the basement with the heat pump outside, so there are no ducts in the attic.
Quote Details
The quote includes services for attic insulation: - Attic Cleaning - Insulation Type: R38 blow-in insulation The contractor stated that insulation could not be added due to the absence of lower intake vents in the roof (only ridge vents are present, no soffits).
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More Details
Category
Insulation
Price
$3,000
Quote Date
November 13, 2025
Location
Washington
Home Size
1,300 sq ft
Insulation Type
Blown In
R Value
R38
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