Is $6,000 to remove old insulation, air seal, and blow in new cellulose insulation in attic a fair price?
Project Details
My house was built in the 90s, is 3700 sq ft, and has significant cooling and heating costs. An energy audit showed about 3 air changes per hour, so it's reasonably tight, with no major suggestions besides sealing lighting receptacles in the attic. There's a 5-degree differential between the upstairs and main floor, and a 10-degree differential between the upstairs and basement. I have a single HVAC unit for all 3 floors, which keeps up but has uneven distribution of conditioned air. I was hoping the air sealing would reduce the stack effect. I'm trying to figure out if comfort will markedly improve with new insulation, especially regarding temperature regulation between floors. I'm not so much worried about the financial ROI on attic insulation as I am about whether I will be able to perceive improvement in temperature regulation between floors.
Quote Details
This option involves a complete attic reinsulation. - Remove existing fiberglass insulation (currently R43, compacted from 30 years). - Perform air sealing in the attic. - Blow in new cellulose insulation to achieve R50, meeting current code.
You say...
Vote Distribution
These ratings are not endorsed by Quote Critic. They are submitted by other Quote Critic users like you.
More Details
Category
Insulation
Price
$6,000
Quote Date
August 23, 2025
Home Size
3,700 sq ft
Insulation Type
Blown In
R Value
R50
Comments
No comments yet
Sign in to share your thoughts and ask questions.
Similar Quotes
Add additional blown-in fiberglass insulation to the attic
This option involves adding additional blown-in fiberglass insulation on top of the existing settled insulation in the attic floor to increase the R-value.
Add blown-in fiberglass insulation on top of existing, air sealing, and attic repairs
This quote is for adding blown-in fiberglass insulation on top of existing insulation, along with air sealing and other attic-related repairs and improvements. - Insulation Removal & Disposal: - Main attic: Remove house wrap on exterior walls in attic, fiberglass batt on vault, and animal feces. - Bag and haul away all removed materials at contractor expense, disposing in accordance with federal, state, and local regulations. - Blown in Insulation (Main attic floor, 979 sq ft): - Install fiberglass blown-in insulation to achieve up to R-49 (16" nominal depth) across all attic floor space where existing insulation allows. - Depth ruler gauges to be installed to verify insulation depth. - Baffles to be installed as needed to ensure proper ventilation. - Repair attic floor where any voids are present. - Limited Lifetime Warranty included. - Hatch Master (Main attic hatch, 30"x30"): - Install zippered, insulated attic hatch cover to prevent drafting between living/conditioned space and attic. - Seal around attic hatch with single component foam to stop air drafting if needed. - Limited Lifetime Warranty included. - Home Air Sealing (Main attic): - Install single component foam to seal wall top-plates, HVAC boots, around any electrical and lighting, and any other protrusion from the living space to the attic. - Limited Lifetime Warranty included. - Other Misc. Items: - Install Tyvek house wrap on exterior walls in attic to create an air barrier. - R-30 Fiberglass Batt (Vaulted ceiling in attic, 315 sq ft): - Install fiberglass batt / blanket insulation in floor joist cavities to achieve R-30. - Highest quality (Owens Corning) GUARANTEED, reputable national brand fiberglass insulation. - Limited Lifetime Warranty included. - Other Misc. Items: - Replace 2 gable vent screens.
Remove existing insulation and install R-38 cellulose insulation in the attic
- Removal of existing attic insulation- Installation of R-38 cellulose insulation in the attic