The Best Insulation Contractors in Cary, IL

Compare the highest-rated insulation professionals in Cary, Illinois. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Allsealed Insulation & Home Performance

4.9
(180 reviews)
Verified

A top-tier, specialized contractor focusing exclusively on home performance and insulation. They are known for their scientific approach, using diagnostic tools like blower door tests to identify air leaks and recommend comprehensive solutions. Their expertise in creating tight building envelopes and maximizing energy efficiency makes them a standout provider.

127 S Virginia St, Crystal Lake, IL 60014

Specialties & Features

Spray foam insulation
Air sealing services
Energy efficiency audits

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

A+ Insulation Inc.

4.8
(250 reviews)
Verified

A well-established and highly-reviewed family-owned business serving the Chicagoland area. They have a strong reputation for professionalism, quality workmanship, and a wide range of insulation services. They are particularly noted for their blown-in and batt insulation work in both attics and walls.

1275 Rand Rd, Des Plaines, IL 60016

Specialties & Features

Blown-in insulation installation
Attic insulation installation and upgrade
Wall insulation services

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#3

Raynor Services

4.7
(150 reviews)
Verified

While known as a premier garage door company, Raynor Services has a significant and well-regarded division dedicated to insulation, specifically for garages, basements, and crawl spaces. They leverage their expertise in door systems to provide comprehensive insulation and air sealing solutions for these challenging areas of the home.

1275 S. Wolf Rd, Prospect Heights, IL 60070

Specialties & Features

Basement and crawl space insulation
Garage insulation
Insulation removal and replacement

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

Why These Are the Top Insulation Contractors in Cary

** The insulation market in Cary, IL, is characterized by a mix of large, multi-service Chicagoland contractors and a smaller number of specialized, high-performance local firms. The average quality is high, as contractors must be well-versed in the specific climate challenges of Northern Illinois and comply with both state and local building codes. Competition is moderate but healthy, driving a focus on customer service and quality. Typical pricing is in line with regional averages. For standard attic blown-in cellulose or fiberglass, homeowners can expect prices in the range of **$1.50 - $2.50 per square foot**. For more advanced solutions like spray foam, prices are significantly higher, often **$3.00 - $7.00+ per square foot**, depending on the type (open-cell vs. closed-cell) and project complexity. A key factor for Cary residents is the prevalence of older homes that benefit greatly from modern air sealing techniques, and many of the top providers are adept at identifying and qualifying homeowners for available utility rebates (e.g., from ComEd or Nicor Gas) for energy efficiency upgrades.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Cary regulations and climate

Frequently Asked Questions About Insulation in Cary

Get answers to common questions about insulation services in Cary, Illinois.

1What is the recommended insulation level (R-Value) for attics in Cary, IL, and why is it specific to our area?

For Cary's climate, which experiences cold winters and hot, humid summers, the U.S. Department of Energy recommends an attic insulation level of R-49 to R-60. This high R-Value is crucial for maintaining consistent indoor temperatures, reducing energy costs associated with both heating and air conditioning, and preventing ice dams in winter—a common issue in Northern Illinois due to snow accumulation and roof heat loss.

2How does the timing of insulation installation in Cary affect the project and potential savings?

The best times for insulation projects in Cary are typically late spring and early fall. These seasons offer moderate temperatures, allowing for proper installation of materials like spray foam and ensuring your home is sealed before the extreme cold of winter or heat of summer. Completing the work before peak seasons also means you'll start saving on energy bills immediately when you need heating or cooling the most.

3Are there any local rebates or incentives in Illinois for upgrading my home's insulation?

Yes, Illinois homeowners can access significant incentives through the Illinois Home Performance with ENERGY STAR program and ComEd's Energy Efficiency Program. These often provide rebates for air sealing and adding insulation that meets specific performance standards. Additionally, the federal tax credits for insulation (up to $1,200 annually) apply, making upgrades in Cary more affordable with combined savings.

4What should I look for when choosing a local Cary insulation contractor?

Prioritize contractors who are licensed, insured, and have strong local references. In Cary and McHenry County, it's essential they understand local building codes and the specific challenges of our climate, such as proper attic ventilation to prevent moisture issues. Look for providers who perform a detailed energy audit or assessment first, as this ensures the solution is tailored to your home's unique needs rather than a one-size-fits-all approach.

5My older Cary home feels drafty. Should I focus on adding new insulation or air sealing first?

Air sealing is almost always the critical first step, especially in older homes common in Cary's established neighborhoods. Gaps, cracks, and leaks around windows, doors, and attic penetrations let conditioned air escape, rendering even high R-Value insulation ineffective. A professional assessment will identify these leakage points; sealing them before adding new insulation ensures maximum performance, comfort, and energy savings year-round.