Starmark – Composite Replacement Window


The Starmark window by Okna is a solid-core composite replacement window. Composite windows offer the highest level of rigidity while still offering the same maintenance free appeal found in vinyl windows.  The Starmark Composite Window offers the highest thermal and structural performance of any composite window on the market and a wide variety of options to make sure it looks great in your home.

The Starmark window is perfect for homeowners who want an energy efficient product that is able to endure under harsh temperatures and heavy weights.

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Window Features


These Features are Standard on all of our Starmark composite replacement windows.


Composite Frame on Starmark Window


Solid Composite Material

Even under heavy loads and high heat, composite stays strong.


Vent latch of Okna 500 Window

Vent Latches

Vent latches allow the window to be opened a controlled amount for safety.

Metal window lock on Okna 500 window

Metal Locks

Powder coated, metal locks are strong and beautiful.

Inter-Lock and Bulb Seal

Inter-Lock & Seal

An Inter-Lock system and thick bulb seal work together to make this one of the most air-tight windows on the market.

Mortised Dam Sill


Mortised Dam Sill

A integrates the dam sill into the side frame insuring a clean and tight frame.


Thru-Vision Screen


Thru-Vision Screen


A thin, fiberglass mesh screen that allows the maximum amount of light to pass through.

Window Options


Standard and Optional Choices to Customize Your Ideal Window


White or Wood Laminate

white vinyl replacement window

Euro-White (Standard)


Almond/Beige (Optional)


Cocoa (Optional)


Bronze (Optional)


Sandstone (Optional)


Terra Brown (Optional)


Custom Color (Optional)


5/8″ Flat Grid


11/16″ Contour Grid

Simulated Divided Lite (SDL)

Simulated Divided Lite (SDL)


Colonial Pattern


Diamond Pattern


Prairie Pattern

  • Double Pane
  • Triple Pane
  • SunSeal
  • Obscure
  • Tempered
  • Laminated

Window Performance


Thermal and structural performance ratings on windows tell you how your window will perform in your home.

 Thermal Performance

Glazing Option U-Value SHGC VT CR   Energy Star Minimum for VA Energy Star Minimum
Double Pane Deluxe 0.25 0.28 0.50 62 0.3 17% Better
Triple Pane Deluxe 0.20 0.24 0.40 72 0.3 37% Better


Structural Performance

Our Windows Industry Minimum
AAMA Rating R45 R15
Air Infiltration cfm/ft2 0.05 0.3        1500% Better


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