Certified Window Company 773-772-7470

  • Commitment
  • Experience
  • Service
  • Features
  • Samples
Certified Window Commitment

Certified Window Company has been providing professional full-time installation and service to the Chicagoland area for over fifty years. Since 1955, Certified Window Company has given its customers unmatched service and the highest quality windows available on the market. Call today to see how we can help you.

Certified Window Experience

Our professional, full-time installation and service crews are experienced in all types of window installations:

  • Vinyl Windows
  • Aluminum Windows
  • Wood-Clad Windows
  • Fire-rated Windows
  • Sliding and Swinging Patio Doors
  • Security Screens
  • Replacement Screens

From individual homeowners and property managers to developers and construction companies, Certified Window can help you meet your timetable and your budget. Call us to discuss how we can help you in one of the following areas:

  • Certified Window ServiceResidential
  • Commercial
  • Heavy Commercial
  • New Construction
  • Rehabilitation
  • Conversion
  • Repair


Certified Window Features
  • Thermal barrier, heavy-duty aluminum extrusions for strength and thermal efficiency.
  • Fully interlocking meeting rails help eliminate infiltration.
  • Tilt top and bottom sashes for easy cleaning inside the home.
  • Double Mylar fin-seal woolpile helps eliminate air, water and noise infiltration. Better retention of shape resulting in a longer-lasting seal.
  • 7/8" insulated glass Warm Edge Intercept™ spacer reduces condensation, stress cracks and seal failures.
  • Self-locking head latch on the upper sash stops sash from drifting downward and enhances security.
  • Roll form half screen included for bottom ventilation. Options include full screen, extruded screen or aluminum screen mesh.

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Call Certified Window Company today for a free consultation - 773-772-7470