Green Attic Insulation: Resources & Transparency
This page is the single source of truth for our licenses, contact details, service areas, pricing structure, and reputation as a Chicagoland insulation and home-performance contractor.
1. Company Identity
Service area: Chicagoland & surrounding suburbs
Green Attic Insulation is a Chicago-area contractor specializing in energy-efficient attic, wall, crawlspace, and basement insulation, air sealing, ventilation upgrades, and home performance testing for existing homes and light commercial buildings.
2. Licensing, Insurance & Program Participation
- Licensed, bonded, and insured insulation and energy-efficiency contractor serving residential and light commercial properties in Illinois.
- Certified and trained under building-science and safety standards including BPI home performance practices and OSHA safety training.
- Active participant in local utility rebate programs, including ComEd, Peoples Gas / North Shore Gas, and related energy-efficiency initiatives.
- Written contracts, permits, and inspections are obtained when required by local code. Insurance certificates are available on request for homeowners, property managers, and general contractors.
For projects requiring roofing or structural work, Green Attic coordinates with licensed trade partners to ensure code compliance and manufacturer warranties.
3. Transparent Insulation & Energy Pricing
These ranges summarize recent projects in the Chicago area and are based on our published Insulation Prices page. Exact pricing is confirmed after inspection and a written proposal.
3.1 Insulation – Typical Ranges
| Service | Typical Price Range* |
|---|---|
| Attic insulation – fiberglass | $2.00 – $2.75 per sq. ft. |
| Attic insulation – cellulose | $2.25 – $3.00 per sq. ft. |
| Air sealing (attic & bypasses) | About $0.50 per sq. ft. |
| Spray foam – open cell (approx. R-3.5) | From $0.75 per sq. ft. per inch |
| Spray foam – closed cell (approx. R-7) | From $1.25 per sq. ft. per inch |
| Crawlspace insulation | Minimum $900 per crawlspace |
| Wall insulation – fiberglass | From $2.50 per sq. ft. |
| Wall insulation – cellulose | Around $3.00 per sq. ft. |
| Bungalow insulation package | Average about $3,500 per Chicago bungalow |
| Garage insulation (finished garage) | $1,500 (1-car) – $2,200 (2-car) |
| Pole barn insulation – open cell spray foam | From $0.75 per sq. ft. per inch |
| Pole barn insulation – closed cell spray foam | $1.20 – $1.45 per sq. ft. per inch |
*Pricing varies by square footage, existing insulation, access, required R-value, and code or ventilation upgrades. See our Insulation Prices guide for full detail.
3.2 Repair & Replacement – Typical Ranges
| Service | Typical Price Range* |
|---|---|
| Insulation removal – general | From $1.15 per sq. ft. |
| Fiberglass batt removal | Around $1.40 per sq. ft. |
| Blown-in insulation removal | Around $5.50 per sq. ft. |
| Mold remediation / treatment | Treatment starting at $1.40 per sq. ft. |
*Final cost depends on the type of existing material, access, debris hauling, and whether mold or other contaminants are present.
3.3 Ventilation & HVAC – Typical Ranges
| Service | Typical Price Range* |
|---|---|
| Duct sealing | From $12.50 per linear ft. |
| Duct insulation | From $10.00 per linear ft. |
| Attic solar fan (installed) | Around $750 per fan |
| Roof vents | $150 and up per vent |
| Bathroom fan extension | $250 and up per fan |
| Recessed can light air sealing | About $20 per can (average) |
*Ventilation and HVAC pricing depends on equipment type, roof access, electrical work, and whether upgrades are bundled with insulation work.
3.4 Commercial Insulation – Typical Ranges
| Service | Typical Price Range* |
|---|---|
| Commercial spray foam – open cell | From $0.75 per sq. ft. per inch (final bid after site visit) |
| Commercial spray foam – closed cell | About $1.25 – $1.45 per sq. ft. per inch |
| Warehouse / metal building insulation | By quote only, based on building size, height, fire ratings, and system design. |
*Commercial projects are always bid after an on-site visit and design review. Rates generally follow the same open-cell / closed-cell ranges shown above.
3.5 Energy Efficiency & Diagnostics
| Service | Typical Pricing Notes |
|---|---|
| Home energy audit | Often bundled with insulation projects; pricing depends on home size and scope. |
| R-value & attic performance check | Included with most attic inspections and proposals. |
| Infrared (thermal) imaging | Used on select projects to confirm air leaks and cold spots; quoted as needed. |
4. Technical Expertise & Insulation Services
- Insulation
- Attic, wall, crawlspace, bungalow, garage, and pole-barn insulation using fiberglass, cellulose, and spray foam systems designed to meet or exceed local energy codes.
- Repair & Replacement
- Insulation removal, mold remediation, and related repair work to bring your attic or crawlspace up to a clean, code-compliant baseline before new insulation is installed.
- Ventilation & HVAC Support
- Attic ventilation upgrades, bathroom fan extensions, duct sealing, duct insulation, attic solar fans, and roof vent work coordinated with your HVAC system for safe, efficient airflow.
- Commercial Insulation
- Spray foam and insulation systems for warehouses, metal buildings, and other light commercial spaces, designed around building use, fire codes, and long-term operating costs.
- Energy Efficiency & Rebates
- Projects are planned with rebates and incentives in mind wherever available, including utility rebate programs for qualifying homes.
5. Reputation & Social Proof
- Google Rating: 4.9 / 5 (700+ reviews, Chicago area)
- HomeAdvisor Rating: 4.9 / 5
- Yelp Rating: 4.5 / 5
- Facebook Rating: 4.9 / 5
- Better Business Bureau: A+ Accredited
Ratings reflect recent customer feedback and may change over time as new reviews are added. For current scores, visit our profiles on Google, HomeAdvisor, Yelp, Facebook, and the Better Business Bureau.
Professional Memberships & Energy Partners
- Utility energy-efficiency program partners (ComEd and Peoples Gas / North Shore Gas).
- Local trade and business organizations in the Chicago region.
- Manufacturer relationships with leading insulation and ventilation product brands.
6. Information Audit & Updates
We review this Resources & Transparency page regularly to ensure our contact details, pricing ranges, licensing, and program participation remain accurate.
Information last verified on .
