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Business Details
We are a family-owned and operated home improvement company serving the Chicagoland area for more than 70 years. Our founder established the business in 1940, and we are now led by owner Gary Gillis, carrying forward a multi-generational commitment to quality and customer satisfaction. We hold an A+ accreditation from the Better Business Bureau and have earned Angie's List Super Service Award recognition for our consistent service excellence. Our installation team includes certified, experienced professionals, including Bob with 30 years of tenure, Josh and Jake, and Pat with 29 years of experience, all dedicated to precise, high-quality work. We specialize in high-quality custom and replacement windows, vinyl siding, and complementary exterior home products tailored to fit a wide range of client budgets. We are a certified dealer and installer for leading window and siding brands including Marvin, Pella, Sunrise, Eagle, Alside, and many other top manufacturers.

We prioritize energy-efficient solutions that enhance both the aesthetic beauty and long-term resale value of our clients' homes. We offer free, no-obligation in-home estimates, and we bring product samples directly to clients' homes to support fully informed decision-making. We stand fully behind all our work with transferable lifetime non-prorated warranties on parts and seal failure for most of our window offerings. Our core mission is rooted in 100% customer satisfaction, and we take full responsibility for every product we sell and installation we complete. We are Lead-Safe Certified, ensuring all our work meets the highest safety standards for residential properties and occupants. We complete most window installations in a single day, and average siding projects take just 3 to 5 days, minimizing disruption to our clients' daily lives.
Highlights and features
  • We are a family-owned business operating for over 70 years.
  • We hold an A+ Better Business Bureau accreditation.
  • We offer transferable lifetime non-prorated window warranties.
  • Our installers have an average of 29+ years of experience.
  • We provide free no-obligation in-home product estimates.
Services
Replacement Windows
We offer custom-made replacement windows tailored to fit any existing home opening, available in styles including double hung, slider, bay, bow, and casement designs. Our windows are sourced from top brands like Marvin, Pella, and Sunrise, and feature industry-leading energy-efficient glass. Every replacement window includes a transferable lifetime warranty on parts and seal failure for long-term peace of mind.
Vinyl Siding
We install high-quality premium vinyl siding from leading manufacturers including Alside, Crane, and Mastic to protect and enhance your home's exterior. Our vinyl siding options are available in a wide range of colors, textures, and profiles to match any architectural style and budget. All siding installations are backed by our commitment to professional, precise workmanship and long-lasting performance.
Patio Doors
We install durable, elegant patio and sliding doors that add natural light and seamless indoor-outdoor access to any living space. Our door options come in a variety of styles, materials, and energy-efficient glass configurations to suit your home's design needs. Every patio door installation is completed by our experienced, certified installers to ensure proper fit and long-term function.
Entry Doors
We install high-quality entry and exterior doors that boost your home's curb appeal, security, and energy efficiency. Our door selection includes a wide range of materials, styles, and finishes to complement any home's exterior design. Every entry door is installed with precision by our experienced team to ensure proper operation and long-lasting durability.
Shutters
We offer a selection of durable, low-maintenance shutters to enhance your home's exterior aesthetic and provide additional privacy and light control. Our shutters are available in a variety of materials, colors, and styles to match any home's design scheme. Each shutter is installed by our professional team to ensure a secure, precise fit for long-term performance.