Air Sealing & Insulation in Mt Prospect, IL

We're a family-owned contractor.html">remodeling contractor with over 20 years working in Mt Prospect, IL and the surrounding northwest suburbs. We don't sub this work out. The same crew that diagnoses the problem does the sealing, which means nothing falls through the cracks between one trade and another. You get one point of contact and a straight answer about what's actually going on in your walls and attic.

Because we handle full remodels too, including bathroom remodels and kitchen projects, we often catch air sealing problems during renovation work that a standalone insulation company would miss entirely. When a wall is already open, we seal it correctly before it closes back up. That's the kind of detail that pays off on your energy bill for years.

Mt Prospect, IL sits squarely in a climate that swings from single-digit wind chills in February to humid 90-degree stretches in August. That temperature range puts serious stress on any home that isn't tight. Air sealing isn't optional here the way it might be in a milder climate. When cold air pours in through a drafty rim joist all winter, your furnace just keeps running to compensate. Sealing those spots first, before you upgrade equipment or add insulation, is how you get real results on your utility bills.

Where Air Sealing Makes the Biggest Difference

Most air leaks aren't where homeowners expect them. The attic floor is usually the biggest offender, especially around recessed lights, plumbing stacks, and the tops of interior walls. Rim joists, where the framing meets the foundation, are another major source. A good air sealing job addresses all of it, not just the obvious spots around windows and doors.

Gaps in ductwork also matter. When ducts running through a cold attic or crawlspace leak conditioned air into those spaces, you're paying to heat and cool areas you never use. We seal duct connections as part of the overall air sealing scope so the whole system works together.

Insulation Works Better in a Sealed Home

Insulation slows heat transfer, but it can't stop air movement on its own. If your attic has R-38 insulation but open gaps around every penetration, cold air bypasses the insulation entirely and you feel it. Air sealing closes those bypass routes first, which means the insulation you already have actually performs the way it's rated to.

When we add new insulation after sealing, we match the type and depth to what your home needs. Blown-in insulation works well for attics with existing material, while spray foam handles irregular gaps and rim joists. The goal is a home that holds its temperature without your furnace or AC working overtime.