Commercial and Residential Insulation Contractor in Deer Park, IL
Green Attic Insulation delivers eco-conscious services backed by detailed energy audits, allowing Deer Park clients to implement improvements that reduce waste and align with modern building standards.
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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
Deer Park, IL

Cellulose Insulation
Deer Park, IL
Our Proven Process
Step 1: Free Energy Audit
Step 2: Customized Plan
Step 3: Professional Installation
Step 4: Results
Frequently Asked Question
What is cellulose insulation made of?
Modern cellulose insulation is made from 75 to 85 percent recycled paper or denim, treated with boric acid, borax, or ammonium sulfate.
How does insulation work?
Insulation works by slowing conductive and convective heat flow, while radiant barriers and reflective insulation reduce radiant heat gain through reflective surfaces in contact with air spaces.
How thick is R21 insulation?
R21 insulation is approximately 5.5 inches thick. This type of insulation is often used in walls and provides a higher R-value compared to standard insulation options, contributing to improved energy efficiency and thermal comfort in residential and commercial buildings.





