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Exclusively manufactured and installed by Great Day Improvements, the Stanek Windows brand offers outstanding strength and unbeatable insulation, backed by certified performance. Stanek Windows are custom-designed and custom-made for your home specifically and installed to ensure the highest level of quality control. Stanek Windows are exquisitely hand-crafted to provide homeowners with advanced thermal protection that will increase energy efficiency and lower energy bills.

Our windows are independently tested and certified and adhere to all standards created by the National Fenestration Rating Council® (NFRC) and ENERGY STAR.

Discover the Stanek Windows difference for yourself:

  • Full product line of truly custom-made windows of every style including double-hung, casement, sliding, bay, bow, specialty shaped and patio doors
  • Exclusively manufactured and installed by Great Day Improvements- deal with the factory directly, no middlemen
  • Unique design not duplicated by any other manufacturer
  • Superior design pressures, air infiltration rates, u-values and solar heat gain numbers
  • Custom-designed and custom-made for your home specifically with endless options including custom exterior colors, woodgrain interior options, hardware finishes and glass package choices for maximum energy-efficiency

 

Stanek Windows are guaranteed with a limited lifetime material warranty and a two-year labor warranty. Customers will have peace of mind knowing that they've made the right choice for their home.

The Stanek Windows line of products includes:

Replacement Windows

Our Stanek Windows line delivers benefits far beyond style. Our windows offer cutting-edge structural and thermal performance. In fact, our Comfort-Gard® XTREME triple-pane glass with krypton gas is the most energy-efficient glass on the market today. If you are ready to replace your windows or doors, compare Stanek Windows to leading national brands and discover the difference.
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Entry & Patio Doors

Our Stanek Windows line of patio doors are second to none. Custom-made for your home specifically, our patio doors come standard with 1-1/8-inch tempered safety glass, making our patio doors among the most energy efficient in the industry.
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Storm Doors

Protect your home from the elements with a strong, durable storm door. Every storm door we offer is constructed with tempered glass for safety and a durable finish. We offer a wide range of styles and options to match the current design and style of your home.
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