Is $3,999 to add blown-in fiberglass insulation on top of existing, air sealing, and attic repairs a fair price?
Project Details
My house was built in 1986. The existing blown-in fiberglass insulation has settled and in places, where later electrical or other work has been done, the insulation was shifted and not replaced. I want to bring the insulation to R-49 with blown-in fiberglass insulation. I'm concerned if the old insulation will still be effective with a new layer of insulation on top. There is some old raccoon scat in the attic in one spot. The insulation on the vertical walls is on interior walls, not exterior. The great room has a cathedral ceiling with high walls, and the vertical sections are from the level of the ceiling in the surrounding rooms to the start of the slant for the cathedral ceiling. I got three quotes, and the other two were considerably higher.
Quote Details
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.
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More Details
Category
Insulation
Price
$3,999
Quote Date
July 28, 2025
Year Built
1986
Insulation Type
Blown In
R Value
R-49
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