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Gilkey Difference

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Problems with

Weak Frame Windows

Bowing, bending, and leaking.

Loss of efficiency and performance.


Vunerlability to air
and water infiltration.

Gilkey Window Company

Double Hung Fiberglass Windows Available

Serving the Cincinnati, OH; Dayton, OH; Chicago, IL; Palatine, IL; Lexington, KY; and Louisville, KY Areas

Competitors Weep Holes
Competitors VINYL Insert Window
Double hung fiberglass windows Dayton, OH
Gilkey G-SERIES Insert Window

Highlights of the G-SERIES INSERT system are:

  • Multiple Glazing options 3/4" glass to Triple Pane 1"
  • NFRC U-VALUES as low as .19
  • 2015 IRC Egress Compliant for a 36" x 60" opening
  • Low-Profile design- Maximizes light and reduced bulk
  • Slope Sill for natural water drainage
  • FRP fiberglass material for low maintenance and strength
  • Internal Glazing bead
    -Field serviceable glass changing
  • Sashes -Fusion Welded to protect insulated glass units
You'll Love Your Gilkey Windows...

Gilkey’s fiberglass windows are designed for everyday life. The window system features a Lifetime/Transferrable Warranty to protect your investment. All windows are custom built in our state-of-the-art facility in Cincinnati, Ohio.

Ask your consultant about the many color and interior finishing options available such as: cherry, golden oak, dark oak, or custom stainable finishes.

There is also a wide selection of glazing options available to fit your application needs including Triple Pane LoE Argon or our Exclusive SunTuitive® self tinting glass.

You'll Love Your Gilkey Windows... Gilkey's EZ-Tile lock system is designed to allow cleaning of glass with ease. No unsightly latches or buttons on the meeting rail gives a true, architecturally correct Double Hung. You'll Love Your Gilkey Windows...
AAMA Criteria
Industry Minimum
Overall Performance Grade
PG R-15
PG-LC -40
0.30 CFM
.11 CFM
5.43 PSF
Structural Load
23 PSF
75 PSF
Typical Replacement Look
Typical "Replacement" Look
Gilkey G-SERIES INSERT Window looks more original

Gilkey's G-SERIES Double Hung windows allow customers to replace their original Double Hung Windows with the ultimate in technology and performance while keeping the original aesthetic appeal and styling of the home.

No added bulk of "full frame" window inserts needed!

No Weep holes which take away from the beauty and design of old world craftmanship.

Our fiberglass system offers state of the art design and performance.

This window system is truly unique and Patent Pending by Mike Gilkey himself.

You'll Love Your Gilkey Windows
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