Spray Foam Insulation Chicago
Green Attic delivers high-performance spray foam insulation in Chicago, sealing air gaps for year-round comfort, energy savings, and healthier indoor air quality.
Trusted by homeowners for reliable, energy-saving insulation solutions.
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Chicago Spray Foam Insulation Contractor
Contact us today for a free consultation. Green Attic is the best spray foam insulation contractor in Chicago, with 15 years of experience in residential, commercial, and personal project spray foam applications.
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How Spray Foam Insulation Protects Your Home
Thermal Barrier
Pressure Barrier
Moisture Barrier
Uncompromised Shelter with Spray Foam Insulation
The building envelope separates the indoors from the outdoors. Insulate your home exterior walls and ceiling using spray foam insulation to create an uncompromised shelter.
Create a continuous insulation throughout its entire envelope without any thermal bridging using exterior insulators and closed cell spray foam – Best Performing Insulation for a complete moisture, pressure, and thermal barrier.
✓ Thermal Barrier - Highest R-Value Per Inch
✓ Moisture Barrier - Prevents Vapor Transfer
✓ Pressure Barrier - Prevents Air Movement
✓ Thermal Barrier - Highest R-Value Per Inch
✓ Moisture Barrier - Prevents Vapor Transfer
✓ Pressure Barrier - Prevents Air Movement
Where to Insulate With Spray Foam?
Roof /Ceiling Exterior Walls Headers/ Rim Joist Basement Concrete Walls Overhang Floors
If your existing home’s walls are 2×4 framing instead of the newer thicker 2×6 then Spray Foam Insulation is a difference maker over traditional insulation materials.
With increased R-value and less heat escape in winter and heat intrusion in summer, you can live more comfortably and pay less every month with lower maintenance costs.
With increased R-value and less heat escape in winter and heat intrusion in summer, you can live more comfortably and pay less every month with lower maintenance costs.
For advanced temperature control, superior moisture resistance, and added structural support, higher-density spray foam delivers superior thermal moisture and air movement protection results.
With an even tighter seal and higher R-value per inch, closed-cell spray foam is ideal for residential, commercial, and industrial projects.
With an even tighter seal and higher R-value per inch, closed-cell spray foam is ideal for residential, commercial, and industrial projects.
Closed Cell Spray Foam
• Best for above grade exterior walls, garage ceilings, foundation walls, rim joists, etc.
• Requires an intumescent barrier in an occupied space or storage space. Closed Cell is a two-Part , medium-density, one-to-one-by-volume spray-applied polyurethane foam.
• Closed Cell production requires the use of an “A” component (ISO) and a blended “B” component (RESIN), which contains ZERO ozone-depleting blowing agents, catalysts, polyols, and fire-retarding materials.
• Closed Cell is an insulation system designed for use in residential applications. Use it in lieu of more traditional forms of insulating materials such as fiberglass, cellulose, or other loose-fill products.
• Typical areas where spray polyurethane foam is applied are exterior walls, vented attics, unvented attic assemblies, between floors, foundations, crawl spaces, HVAC ducts, fluid tanks, and cold storage units.
• Requires an intumescent barrier in an occupied space or storage space. Closed Cell is a two-Part , medium-density, one-to-one-by-volume spray-applied polyurethane foam.
• Closed Cell production requires the use of an “A” component (ISO) and a blended “B” component (RESIN), which contains ZERO ozone-depleting blowing agents, catalysts, polyols, and fire-retarding materials.
• Closed Cell is an insulation system designed for use in residential applications. Use it in lieu of more traditional forms of insulating materials such as fiberglass, cellulose, or other loose-fill products.
• Typical areas where spray polyurethane foam is applied are exterior walls, vented attics, unvented attic assemblies, between floors, foundations, crawl spaces, HVAC ducts, fluid tanks, and cold storage units.
Open Cell Spray Foam
For more comfortable and consistent indoor temperature control and optimum energy efficiency, Open Cell spray foam products are the natural choice.
Light-density spray foams provide lower R-value per inch than closed cell spray foam, expanding into crevices and cracks to create a precision seal that beats traditional fiberglass, cellulose, and other loose-fill products.
Open Cell Spray foam will allow moisture to wick through, ideal for attic and garage ceilings and commercial building applications.
✓ Lower Cost Than Closed Cell Foam
✓ Not A Moisture Barrier
✓ Lower R-Value Per Inch
✓ Lower Density / Lighter /
✓ Easier to Remove / Demo
Light-density spray foams provide lower R-value per inch than closed cell spray foam, expanding into crevices and cracks to create a precision seal that beats traditional fiberglass, cellulose, and other loose-fill products.
Open Cell Spray foam will allow moisture to wick through, ideal for attic and garage ceilings and commercial building applications.
✓ Lower Cost Than Closed Cell Foam
✓ Not A Moisture Barrier
✓ Lower R-Value Per Inch
✓ Lower Density / Lighter /
✓ Easier to Remove / Demo
Consider spray foam for roof decks, balconies, overhangs, exterior walls, etc. Spray foam insulation (spray polyurethane foam or SPF) is a two part mixed spray-applied product widely used to insulate buildings and seal cracks and gaps, making the building more energy-efficient and comfortable.
SPF is known to resist heat transfer extremely well, and it offers a highly effective solution in reducing unwanted air infiltration through cracks, seams, and joints.
SPF is known to resist heat transfer extremely well, and it offers a highly effective solution in reducing unwanted air infiltration through cracks, seams, and joints.
Advanced Temperature Control
Closed Cell Spray Foam for advanced temperature control, superior moisture resistance, and added structural support, higher-density spray foam delivers best results.
With an even tighter seal and higher R-value per inch, it is ideal for residential, commercial, and industrial projects.
• A Full Moisture, Pressure, and Thermal Barrier at 2mm and with an average R-Value of 6.5-7.4 per inch closed cell spray foam insulation has the best heat retention of any insulation.
Consider all the ways to use spray foam on your home, such as transition walls between garage and house, skylights, exterior walls, windows, window wells, box sill, rim joist, sill plate, HVAC ductwork in unconditioned cavities or vented attics.
Yes, in residential and commercial applications, using spray foam for duct work in unconditioned spaces to creates an airtight duct delivery system with an active thermal barrier.
This is superior to interior duct sealing as it provides thermal protection resulting in superior performance of conditioned air delivery. Closed cell foam is also ideal for commercial roof insulation projects.
With an even tighter seal and higher R-value per inch, it is ideal for residential, commercial, and industrial projects.
• A Full Moisture, Pressure, and Thermal Barrier at 2mm and with an average R-Value of 6.5-7.4 per inch closed cell spray foam insulation has the best heat retention of any insulation.
Consider all the ways to use spray foam on your home, such as transition walls between garage and house, skylights, exterior walls, windows, window wells, box sill, rim joist, sill plate, HVAC ductwork in unconditioned cavities or vented attics.
Yes, in residential and commercial applications, using spray foam for duct work in unconditioned spaces to creates an airtight duct delivery system with an active thermal barrier.
This is superior to interior duct sealing as it provides thermal protection resulting in superior performance of conditioned air delivery. Closed cell foam is also ideal for commercial roof insulation projects.
Can it be too hot or cold outside to spray foam?
Yes, it can be too cold to spray foam if the space and the surface of are below 40 degrees. Our truck mounted machines are heated, and we can provide heaters and maintain optimal temperatures for the space.
Spray foam will adhere to a variety of surfaces including wood, metal, glass, concrete house wrap and vapor barrier materials, etc. The optimal temperature for spray foam is 70-90 degrees.
Spray foam will adhere to a variety of surfaces including wood, metal, glass, concrete house wrap and vapor barrier materials, etc. The optimal temperature for spray foam is 70-90 degrees.
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Observe the process of spray foam insulation application
1. Basement wall ready for spray foam
2. Closed cell spray foam applied
3. Drywall installed over foam
4. Drywall sanded and ready for paint
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Closed Cell Spray Foam Crawlspace Walls
• An effective treatment of a moist / damp crawlspace is a vapor barrier. This will prevent moisture from the natural ground level and condensation on the ductwork, wood framing, and mold growth as a result of moisture.
• Air penetration into the house at ground level is visible from dust captured by fiberglass insulation, water / moisture stains on nails and cobwebs around air pathways.
• These signs represent the room for improvement in your homes thermal, moisture and pressure barrier of the conditioned living space with a crawl space encapsulation treatment of the parameter.
• Closed Cell Spray Foam as an insulator in crawl spaces outperforms alternatives but is more costly to manufacture and install.
• Air penetration into the house at ground level is visible from dust captured by fiberglass insulation, water / moisture stains on nails and cobwebs around air pathways.
• These signs represent the room for improvement in your homes thermal, moisture and pressure barrier of the conditioned living space with a crawl space encapsulation treatment of the parameter.
• Closed Cell Spray Foam as an insulator in crawl spaces outperforms alternatives but is more costly to manufacture and install.
Commercial / Industrial Spray Foam
Closed Cell Spray Foam Transition Walls / Cathedral Ceilings
Closed cell spray foam makes has the highest R-value per inch of any insulation R7.4 per inch
✓ Full moisture pressure & thermal barrier
✓ Warmer all winter long
✓ Cooler in the summer
✓ Improve indoor air quality
✓ Consistent temperatures
✓ Full moisture pressure & thermal barrier
✓ Warmer all winter long
✓ Cooler in the summer
✓ Improve indoor air quality
✓ Consistent temperatures
Great for Sill Plate and Rim Joist
Box Sill Basement Insulation, two-part closed cell spray foam has three advantages over fiberglass, cellulose, sheep’s wool, rockwool, mineral wool, and other types of insulation.
✓ Rim Joist Thermal Barrier - Highest R-Value Per Inch
✓ Rim Joist Moisture Barrier - Prevents Vapor Transfer
✓ Rim Joist Pressure Barrier - Prevents Air Movement
✓ Rim Joist Thermal Barrier - Highest R-Value Per Inch
✓ Rim Joist Moisture Barrier - Prevents Vapor Transfer
✓ Rim Joist Pressure Barrier - Prevents Air Movement
Frequently Asked Question
What is spray foam insulation and where is it typically installed?
Spray foam insulation is an expanding foam that air-seals and insulates. It’s commonly installed in attics, crawl spaces, rim joists, and wall cavities depending on the project.
How long does spray foam insulation installation take?
Most residential projects can be completed in one day, but timing depends on the size of the area, prep work, and curing/ventilation requirements.
Will spray foam help lower energy bills?
Spray foam can reduce air leakage and improve insulation performance, which often improves comfort and can help reduce heating and cooling costs.
Service Areas
Northwest Suburbs
North Shore
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