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How Much Does Insulation Cost in Illinois?

Illinois prices are 8% above the national average

Insulation in Illinois costs between $781 and $9,683 per project in 2026. The national average is N/A.

Low
$781
Illinois Avg
N/A
High
$9,683
per projectNational avg: N/A
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Insulation Costs in Illinois — Detailed Breakdown

Service
IL Low
IL High
Natl Avg
Batt and Roll Insulation
$1,230
$4,196
$2,512
Blown-in Cellulose Insulation
$1,069
$4,185
$2,433
Spray Foam Insulation
$1,999
$9,683
$5,409
Rigid Foam Board Insulation
$1,928
$5,533
$3,454
Reflective or Radiant Barrier
$780
$3,075
$1,785
Spray Foam (Open-Cell)
$1
$4
$3
Spray Foam (Closed-Cell)
$2
$8
$5
Cellulose (Blown-in)
$1
$3
$2
Rigid Foam Board
$2
$4
$3
Mineral Wool
$1
$2
$2

Frequently Asked Questions

How much does insulation cost?

The average cost of insulation is $0 per project. Prices typically range from $781 to $9,683 depending on the scope of work and local market conditions.

What factors affect insulation prices?

Key factors include: scope of the work, the provider's experience level, your location, urgency, and any specialized requirements. Getting multiple quotes is always recommended to ensure competitive pricing.

How do I find a reliable insulation professional?

Start by getting 2-3 quotes from qualified professionals. Check their reviews, ask for references, verify their credentials and licensing, and confirm they carry appropriate insurance. Trusted Partners List connects you with pre-vetted pros in your area.

What should I ask before hiring a insulation professional?

Key questions include: What is included in your price? What is your experience with this type of work? How long will it take? What is your cancellation/refund policy? Do you have insurance and proper licensing? Can you provide references from past clients?

When is the best time to hire a insulation professional?

The best time varies by service. Generally, booking during off-peak periods can save 10-20% because professionals have more availability. For urgent needs, services are available year-round but may cost more during busy seasons.

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