Keep Every Room Comfortable Year-Round

Complete residential insulation services for homes in Naperville, Illinois.

When your second floor feels ten degrees warmer than the main level on a July afternoon in Naperville, or when your heating bill doubles in January, the insulation in your attic or walls is not doing its job. Residential insulation services address those gaps by adding or upgrading insulation in attics, walls, crawlspaces, and basements. You notice the change when upstairs bedrooms stay cool in summer and your furnace does not run constantly through the night in winter.

Windy City Insulation provides attic insulation, blown-in insulation, spray foam, crawlspace insulation, and air sealing for homes of all sizes and ages. Older homes in Naperville often have inadequate insulation or settling that leaves gaps around plumbing penetrations and electrical boxes. Newer homes sometimes need additional insulation to meet updated energy codes or to correct builder shortcuts. The work stabilizes indoor temperatures, reduces energy loss, and improves comfort in rooms that used to feel drafty or stuffy.

If you want to see what insulation upgrades make sense for your Naperville home, contact us to schedule a free consultation.

What Happens During a Residential Insulation Project

The crew starts by inspecting your attic, walls, and crawlspace to measure current insulation levels and identify air leaks. In a Naperville home, they often find gaps around recessed lights, plumbing stacks, and attic hatches that allow conditioned air to escape. Depending on what the inspection reveals, they may blow cellulose or fiberglass into the attic, spray foam into rim joists and crawlspaces, or dense-pack insulation into wall cavities through small access holes.

After the insulation is installed, you will notice that rooms hold temperature more evenly and your heating and cooling system cycles less frequently. The new insulation reduces drafts, lowers energy bills, and makes the home quieter by dampening outside noise. Air sealing work around windows, doors, and penetrations further improves performance.

The crew protects flooring and belongings with drop cloths and tarps, then cleans up insulation debris before leaving. Installation time depends on the size of your home and the scope of work, but most residential projects finish in one or two days. The service does not include drywall repair if wall cavities are accessed, but any holes drilled for dense-pack insulation are patched and painted to match. Attic insulation work may require moving stored items temporarily, and the crew will let you know ahead of time.

We Hear These Questions Often

Homeowners in Naperville usually want to know how much insulation they need, whether existing insulation should be removed, and how long the work takes. The answers depend on your home's age, construction, and current insulation condition.

How much insulation does my attic need?
Most attics in Northern Illinois should have insulation with an R-value between R-49 and R-60, which translates to roughly sixteen to twenty inches of blown-in cellulose or fiberglass. If your attic has less than that, adding more insulation will improve comfort and reduce heating costs.
What is the best type of insulation for an older home?
Blown-in cellulose works well in attics because it fills around obstructions and settles into irregular spaces. Spray foam is often the best choice for rim joists, crawlspaces, and other areas where air sealing matters more than insulation thickness.
When should I replace insulation instead of adding to it?
You should replace insulation if it is wet, moldy, compressed, or contaminated by pests. If the existing insulation is dry and in good shape, adding more on top usually makes more sense than removing and replacing it.
Why do some rooms stay warmer or colder than others?
Uneven temperatures usually mean that insulation is missing or inadequate in certain areas, or that air is leaking through gaps around ductwork, lights, or plumbing. Air sealing and targeted insulation upgrades solve the problem.
How soon will I see lower energy bills?
You typically notice a reduction in heating or cooling costs within the first full billing cycle after insulation is installed. The exact savings depend on how much insulation was missing and how often your heating and cooling systems were running before the upgrade.

Windy City Insulation has been upgrading homes throughout Naperville and Northern Illinois since 2017. The crew arrives on time, works cleanly, and explains what they are doing at each step. If you want to make your home more comfortable and reduce energy waste, reach out today for a free residential insulation consultation.