Air Sealing & Insulation in Mt Prospect, IL

We're a family-owned contractor.html">remodeling contractor with over 20 years working in and around Mt Prospect, IL. We've seen the inside of hundreds of homes here, and we know exactly where the weak points hide. We don't just slap insulation over a problem. We find what's letting air move where it shouldn't, fix it, then insulate on top of a properly sealed shell.

Because we handle full remodeling projects alongside this work, we can tie air sealing into a bigger renovation when that makes sense. Getting a bathroom remodel done? That's a perfect time to seal the exterior wall cavities before they're closed back up. You get better results and you're not paying to open walls twice.

Mt Prospect, IL sits in a climate zone that pushes homes hard in both directions. Summers pull humidity through any crack it can find. Winters here are genuinely cold, and a drafty house in January is not just uncomfortable, it's expensive. Older homes in the area were built before energy codes required proper air sealing, so attic bypasses, uninsulated rim joists, and leaky ductwork are common. B&C Remodeling has fixed these exact issues in Mt Prospect, IL homes for two decades. We know what builders did back then and where to look first.

What Air Sealing Actually Does

Air sealing is not the same as insulation, and doing one without the other leaves money on the table. Insulation slows heat transfer. Air sealing stops the air movement that bypasses insulation entirely. A wall full of fiberglass does almost nothing if cold air is moving through a gap at the top plate.

When we complete air sealing on a Mt Prospect, IL home, homeowners typically notice lower gas and electric bills within the first full season. Rooms that always felt off, too cold in winter or stuffy in summer, usually even out once the air movement is controlled.

Where We Focus the Air Sealing Work

The attic floor is the biggest priority in most homes. Heat rises, and any gap between living space and attic is a direct path for conditioned air to escape. We also seal around recessed lights, plumbing stacks, and framing gaps that run the full height of the wall assembly.

Crawl spaces and rim joists are next. These spots are almost always undersized on insulation and rarely sealed at all. After we're done, the framing edge that sits on your foundation is tight, insulated, and no longer acting like an open vent every time the wind picks up.