Pinnacle
Our flagship ENERGY STAR vinyl window — engineered for low-maintenance, all-season comfort.

Residential & Commercial · Veteran-Led
Premium, energy-efficient replacement windows for homes and commercial properties across the Fox Valley and western Chicago suburbs — guided by real-world insight, disciplined project management, and an installation team you can trust.
Our Windows
We install the full Lindsay window lineup — durable, energy-efficient vinyl windows suited to residential and light commercial applications. Not sure which series fits your project? That is exactly what our estimate is for.
Our flagship ENERGY STAR vinyl window — engineered for low-maintenance, all-season comfort.
Maximum thermal performance for demanding Midwest winters and humid summers.
High-performance Low-E glass packages that cut glare and protect interiors from UV.
Premium sightlines and refined hardware where appearance matters most.
Quality, energy-efficient value — ideal for whole-home or multi-unit replacements.
European-style tilt-and-turn with a built-in retractable screen and easy cleaning.
Why Integrity
Most window companies sell a product. We deliver confidence and professionalism that extends well beyond the glass — combining premium products with experience, execution, and peace of mind.
“Integrity…because it matters.”
Premium, energy-efficient windows suitable for both residential and commercial applications — backed by a manufacturer building in Illinois since 1947.
A decade-plus as licensed real estate brokers means we understand exactly how window performance impacts comfort, operating costs, and long-term property value.
Every install is planned and managed with the rigor of military leadership and complex-project oversight — on schedule, on spec, accountable.
Our installation team has worked together for years and works with us exclusively, delivering consistent craftsmanship on every project.
Transparency and long-term relationships over one-off sales. Integrity is not just our name — it is the standard by which we operate.

About Us
Integrity Windows was born out of real experience and trusted relationships. For more than a decade as licensed real estate brokers, we worked with homeowners, property owners, and investors who faced the same recurring challenge: aging, inefficient windows quietly eroding comfort, energy performance, and long-term value.
The solution emerged through a long-standing relationship with the owner of Lindsay Windows in Aurora, Illinois — a family-owned manufacturer founded in 1947. As referrals grew, it became clear that clients needed more than a manufacturer. They needed trusted guidance, disciplined execution, and accountability from consultation through installation.
Leading that work is Mark Metzger — a former U.S. Navy Commanding Officer, project management consultant, and licensed real estate broker. His decades of leadership, logistics, and home-renovation experience ensure every residential and commercial installation is carefully planned and professionally managed, supported by a skilled crew that has worked together for years.
This is more than windows. It is integrity, experience, and execution — working together for every property we serve.
Instant Estimate
Answer a few quick questions for a no-obligation ballpark range. For an exact, itemized quote, we will come measure and walk the project with you.
Your ballpark range will appear here once you tap Show my estimate.
How It Works
We walk the property, listen to your goals, and take precise measurements — no pressure, no obligation.
You get a clear, itemized quote and a straight recommendation on the right Lindsay series for your home or building.
Our exclusive crew installs with disciplined project management — on schedule, on spec, and tidy on site.
We inspect every opening with you and stand behind the work. Accountability is the whole point.
FAQ
Get Started
Tell us about your project — a few windows, a whole home, or a commercial building. We will follow up to schedule a free, no-obligation measure.
Serving the Fox Valley and western Chicago suburbs, IL