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Ceiling Insulation in Chicagoland
Green Attic’s expert ceiling insulation services in Chicago help reduce heat loss, improve indoor comfort, and lower your home’s energy costs year-round.
Trusted by homeowners for reliable, energy-saving insulation solutions.
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What type of insulation is used for ceilings?
There are multiple kinds of insulation that work if you are looking to
insulate your ceiling.
insulate your ceiling.
Fiberglass Batts & Blankets
R-value: 3.0-4.0 per inch (R-13 for a 2-by-4-framed wall).
Advantages: Widely available and familiar, standard widths and thicknesses are designed to fit between studs, joists, and rafters. Paper- and foil-faced versions have stapling flanges that make installation easy.
Rockwool Batts & Blankets
R-value: 4-5 per inch (R-15 for a 2-by-4-framed wall).
Advantages: More fire-resistant than fiberglass. Doesn’t itch. Springs into shape against studs, so installation is staple-free and quick.
Loose-Fill Fiberglass
R-value: 2.2–2.7 per inch.
Advantages: Lightweight enough for attic applications over ½-inch drywall ceilings with framing every 24 inches.
Loose-Fill Cellulose
R-value: 3.2–3.8 per inch.
Advantages: Effective at all temperatures, and can even perform better as the air gets colder.
Open-Cell Polyurethane Spray Foam
R-value: 3.5 to 3.6 per inch.
Advantages: Stops movement of air.
Closed-Cell Polyurethane Spray Foam
R-value: 6.0 to 6.5 per inch.
Advantages: Stops movement of moisture as well as air.
Fiberglass Batts & Blankets
R-value: 3.0-4.0 per inch (R-13 for a 2-by-4-framed wall).
Advantages: Widely available and familiar, standard widths and thicknesses are designed to fit between studs, joists, and rafters. Paper- and foil-faced versions have stapling flanges that make installation easy.
Rockwool Batts & Blankets
R-value: 4-5 per inch (R-15 for a 2-by-4-framed wall).
Advantages: More fire-resistant than fiberglass. Doesn’t itch. Springs into shape against studs, so installation is staple-free and quick.
Polystyrene SIPs
R-value: 5.6-7.7 per inch.
Advantages: The highest R-value per inch of any insulation with a thickness that ranges from ½ inch to 2 inches. It’s often faced with foil, which acts as a moisture barrier. Easy to install.
To insulate these types of ceilings properly, homeowners should choose knowledgeable insulation installers like the Green Attic Insulation.
Our primary goal is to educate our customers in the importance of proper attic insulation.
Our primary goal is to educate our customers in the importance of proper attic insulation.
Conventional Ceiling Insulation
Conventional Ceilings, also known as traditional ceilings, are the standard type of ceiling found in most homes and buildings.
These conventional ceilings are popularly known to use blown-in insulation which blows in loose fill insulation material to the attic space.
This method allows better coverage and fills gaps more effectively. Proper ventilation in attics with conventional ceilings are necessary because adequate ventilation helps regulate temperature and moisture levels, preventing issues such as condensation and mold growth.
These conventional ceilings are popularly known to use blown-in insulation which blows in loose fill insulation material to the attic space.
This method allows better coverage and fills gaps more effectively. Proper ventilation in attics with conventional ceilings are necessary because adequate ventilation helps regulate temperature and moisture levels, preventing issues such as condensation and mold growth.
Suspended Ceilings
Suspended ceilings, also known as dropped ceilings, offer a straightforward and cost-effective solution to conceal ceiling imperfections, wiring, and overhead ductwork. Lowering high ceilings can lead to decreased heating and cooling expenses.
Commonly featuring 2-foot-by-2-foot or 2-foot-by-4-foot grids, these ceilings are designed to accommodate standard 24-inch fiberglass insulation batts.
Optimal results are achieved by using batts with paper facing on one side, providing limited vapor barrier benefits as the paper faces downward during installation.
Commonly featuring 2-foot-by-2-foot or 2-foot-by-4-foot grids, these ceilings are designed to accommodate standard 24-inch fiberglass insulation batts.
Optimal results are achieved by using batts with paper facing on one side, providing limited vapor barrier benefits as the paper faces downward during installation.
How we insulate a ceiling?
Most companies will throw insulation down and call it day. But does that really benefit you? If you’ve read any of our pages, you’d know an insulation job requires much more.
With Green Attic All Of This Is Included:
Proper Diagnosis
Air Tight Support Wall
Baffels
Warranty
Air Sealing
Hatch Cover
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Frequently Asked Question
How much does it cost to insulate a ceiling?
Ceiling insulation typically costs between $1,000 and $4,500, with many homeowners paying around $2,500 for professional installation, depending on your ceiling size, insulation type, and the R-value you choose.
On a per-square-foot basis, prices usually range from about $0.30 to $6.75, and a smaller 500 sq. ft. project often lands in the $400 to $1,500 range. Choosing an option like fiberglass batts or blown-in cellulose can keep costs efficient, while premium materials like spray foam can deliver high performance for more specialized needs.
On a per-square-foot basis, prices usually range from about $0.30 to $6.75, and a smaller 500 sq. ft. project often lands in the $400 to $1,500 range. Choosing an option like fiberglass batts or blown-in cellulose can keep costs efficient, while premium materials like spray foam can deliver high performance for more specialized needs.
What is the best insulation to use for ceilings?
The best insulation for ceilings depends on the ceiling type: blown-in fiberglass or cellulose is a fantastic choice for open attics because it blankets gaps for thorough coverage, while closed-cell spray foam shines in vaulted or cathedral ceilings thanks to its high R-value and strong air sealing.
Mineral wool is a great upgrade when you want added fire resistance and sound control, and rigid foam boards work beautifully in tight or low-clearance areas.
For the best overall results, sealing air leaks around recessed lights and ceiling penetrations helps your insulation perform at its best.
Mineral wool is a great upgrade when you want added fire resistance and sound control, and rigid foam boards work beautifully in tight or low-clearance areas.
For the best overall results, sealing air leaks around recessed lights and ceiling penetrations helps your insulation perform at its best.
Would better ceiling insulation improve comfort on the second floor or in dormer additions that overheat during summer?
Yes, better ceiling insulation can improve comfort on the second floor and in dormer additions by creating a stronger heat barrier that helps keep summer heat out and reduces strain on your cooling system.
For the best results, insulate the areas directly between the roof and living space and pair it with strong air sealing to help keep hot air out and your indoor comfort consistent.
Adding proper attic ventilation, such as baffles and soffit vents, can further boost performance by allowing trapped heat to escape.
For the best results, insulate the areas directly between the roof and living space and pair it with strong air sealing to help keep hot air out and your indoor comfort consistent.
Adding proper attic ventilation, such as baffles and soffit vents, can further boost performance by allowing trapped heat to escape.
Do I need air sealing before adding more ceiling insulation to stop drafts?
Yes, air sealing before adding more ceiling insulation can help stop drafts for a more comfortable home. Insulation helps slow heat transfer, but sealing gaps around wiring, plumbing, top plates, attic hatches, and recessed lights blocks the air movement that causes drafts, so your new insulation performs even better. Once those leaks are sealed with caulk or foam, adding insulation delivers noticeably stronger comfort and efficiency.
Can I add insulation without blocking soffit vents and causing moisture problems?
Yes, you can add insulation without blocking soffit vents and causing moisture problems by installing rafter baffles (air chutes) at the eaves to maintain steady airflow from the soffits to the ridge.
Baffles create a helpful 1- to 2-inch ventilation gap above the insulation, which supports a drier attic and helps prevent moisture issues. For even better results, seal air leaks first and keep insulation neatly back from the soffit openings so fresh airflow can move freely and your attic stays dry and efficient.
Baffles create a helpful 1- to 2-inch ventilation gap above the insulation, which supports a drier attic and helps prevent moisture issues. For even better results, seal air leaks first and keep insulation neatly back from the soffit openings so fresh airflow can move freely and your attic stays dry and efficient.
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