Is $6,820 to replace attic insulation with fiberglass a fair price?
Project Details
I’m planning an attic insulation upgrade for my 1969 bungalow in Calgary, Alberta (climate zone 4). Right now the attic has about 4 inches of old wood shavings. I just finished a 6-month reno with lots of new pot lights, so I’ll be making sure each one gets properly sealed before the new insulation goes in. I’ve done a lot of reading, but I keep seeing conflicting opinions on fiberglass versus cellulose. Fiberglass doesn’t absorb moisture but can let air move through, while cellulose settles over time but has a higher R-value per inch and fills gaps better. Since I’d be topping up to R-50 either way, I'm unsure if the choice really matters in practice. I'm curious about the settling aspect of cellulose.
Quote Details
This option is for replacing the attic insulation with fiberglass to an R-50 value. It includes: - Removal of all old wood chips from the attic - Sealing of any vapor barrier issues - Installation of hatches/covers over all pot lights - Insulation Material: Fiberglass
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
$6,820
Quote Date
August 21, 2025
Home Size
1,200 sq ft
Year Built
1969
R Value
R-50
Comments
No comments yet
Sign in to share your thoughts and ask questions.
Similar Quotes
Redo attic insulation with cellulose
The quote covers the complete process of upgrading the attic insulation to cellulose. - Removal of existing old fiberglass insulation - Thorough cleanup of the attic space - Installation of new blown-in cellulose insulation - Insulation R-value: R38 (to meet climate requirements for San Diego)
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
Comprehensively upgrade attic insulation with R49 fiberglass
This quote provides a comprehensive attic insulation upgrade, including removal of existing insulation, air sealing, and installation of new insulation and related components. It aims to improve thermal performance and ventilation. - Work Area: Flat Ceiling, Skylight Shaft - Existing Insulation Removal: Loose fill insulation removed with a vacuum, batt insulation around skylight also removed - Top Plates (Air Seal): Seal exterior and interior top plates using one-component spray foam insulation where vertical walls intersect with the attic floor. All wiring holes, electrical junction boxes, and other penetrations to the attic floor will be sealed. - Skylight Shaft Insulation: R15 high-density fiberglass insulation installed at cavity - Skylight Shaft Radiant Insulation: Micro-perforated radiant insulation installed over fiberglass batts. All seams and edges sealed with spray foam and/or FSK tape. - Attic Hatch: Rigid insulation installed to the back of the attic hatch cover. Weatherstripping installed at molding. Dam built around hatch. - Recessed Can Lights: Non-combustible airtight cover installed over recessed can lights and sealed to drywall with spray foam. Insulation can then be mounded over the light. - Eaves: Insulation baffles installed at eave areas to ensure proper attic ventilation. - Attic Flat Ceilings: Loose fiberglass insulation blown in to achieve an R49 rating.