Commercial and Residential Insulation Contractor in Wilmette, IL
Green Attic Insulation delivers advanced insulation services to Wilmette residences and business properties, helping meet energy compliance goals and sustainable property operations.
Request a Quote Today
Why Choose Green Attic?
With over 15 years of serving Chicagoland homes and buildings, we provide:
- Full-service insulation solutions
- Licensed and certified technicians
- Immediate rebate opportunities
- Healthier indoor air quality
- Clear pricing and strong warranties

EPA Lead Safe Certified
OSHA Certified

PHS Environmental

BBB Accredited

Nextdoor Recommended

BPI Licensed

NAHB Member

EPA Certified

ASHI Certified Inspector
HomeAdvisor Approved

Angie's List Verified

Yelp Rated
Our Comprehensive Insulation Services

Spray Foam Insulation
Wilmette, IL
Our Proven Process
Step 1: Free Energy Audit
Step 2: Customized Plan
Step 3: Professional Installation
Step 4: Results
Frequently Asked Question
How do you blow insulation into walls?
Start by drilling holes at the top of each wall cavity. Next, insert the insulation hose into these holes. As you fill the cavity, gradually pull the hose out to ensure even distribution of the insulation material. Maintain a steady pace while filling to prevent blockages. Continue filling each cavity until you encounter resistance, indicating that the space is fully insulated.
How thick is R19 insulation?
R19 insulation is 6.25 inches thick. This type of insulation is typically made from fiberglass and is designed to provide substantial thermal resistance, with an R-value of 19. It is commonly used in residential and commercial buildings to enhance energy efficiency and comfort.
What is the best type of insulation for a basement ceiling?
The optimal choice for basement ceiling insulation is closed-cell spray foam. Key to basement insulation is controlling moisture, and closed-cell spray foam excels by providing a robust water vapor barrier.






