Spray Foam Insulation Contractors in Illinois
Climate Zone
Average Cost
$1.50 - $3.50 per sq ft
Building Code Info
Cities in Illinois
Top Contractors in Illinois
Illinois Spray Foam Insulation
Chicago, Illinois
Illinois Spray Foam Insulation serves the Chicago area with both closed-cell and open-cell foam solu...
Residential · Commercial · Agricultural
Get a Free QuoteKoala Insulation of Chicago - Western Suburbs
Illinois, Illinois
Koala Insulation of Chicago - Western Suburbs is a spray foam insulation contractor serving Illinois...
Residential · Commercial
Get a Free QuoteKoala Insulation of Chicago - Western Suburbs
Illinois, Illinois
Koala Insulation of Chicago - Western Suburbs serves the Greater Chicago area, delivering spray foam...
Get a Free QuoteKoala Insulation of Northern Illinois
Illinois, Illinois
Koala Insulation of Northern Illinois delivers spray foam insulation solutions to both homes and bus...
Residential · Commercial
Get a Free QuoteSouthern Illinois Insulation LLC
Illinois, Illinois
Southern Illinois Insulation LLC specializes in closed-cell spray foam insulation for agricultural b...
Agricultural
Get a Free QuoteClimate Zone
4-5
Average Cost
$3.00-$6.50/sq ft
R-Value (Attic)
R-49
R-Value (Walls)
R-20
Climate: cold winters, hot summers
Illinois's extreme temperature swings (-20°F to 100°F) make high-performance insulation essential. Chicago's older housing stock benefits enormously from spray foam retrofits.
Why Spray Foam Insulation in Illinois?
Illinois's extreme temperature swings (-20°F to 100°F) make high-performance insulation essential. Chicago's older housing stock benefits enormously from spray foam retrofits. With a cold winters, hot summers climate, proper insulation is essential for maintaining comfortable indoor temperatures year-round.
In Illinois's cold winters, hot summers conditions, spray foam provides superior performance compared to traditional insulation materials. This can lead to substantial savings on heating and cooling costs throughout the year.
With average costs ranging from $3.00-$6.50 per square foot, spray foam insulation is a smart investment for Illinois homeowners.
Building Code Requirements in Illinois
Attic Insulation
R-49
Wall Insulation
R-20
Climate Zone
4-5
These are minimum requirements. Higher R-values provide better performance and energy savings.
Popular Cities in Illinois
Frequently Asked Questions
How much does spray foam insulation cost in this state?
Spray foam insulation typically costs $1.50-$3.50 per square foot, depending on the type (open-cell vs closed-cell) and project scope.
What R-value is required for insulation?
Current building codes require R-49 for attics and R-20 for walls in Climate Zone 4-5.
Should I choose open-cell or closed-cell spray foam?
In a cold winters, hot summers climate, closed-cell is recommended for its moisture barrier and higher R-value per inch.