Gilkey Windows Glass
Glazing Selections

Glass Coatings, Energy Efficiency & Proven Gilkey Performance

U-Value & Winter Insulating Performance

Keep your home comfortable and energy efficient. Below is a list of reasons why you would want to select a window with lower U-Values

  • Reducing heat costs is a factor in your window investment.
  • Your home has large areas of glass. Improving the insulating value of your windows may be necessary to comply with local energy codes.
  • You sit near your window in the winter.

Summer Solar Heat Control

Protect your home from the “Greenhouse” syndrome. Selecting a window with a lower solar heat gain coefficient if:

  • You have Air Conditioning in your home.
  • You have large areas of glass facing West, South or East.
  • You are building in an area with energy codes that require solar control glazings.  
  • You are replacing windows and some areas of your home currently get too hot.

Sound Control Ratings

Using glazing to regulate sound transmission through windows. You should choose a high sound control window if:

  • You live in a noisy environment (busy street, airport, police, fire station)
  • You are concerned with noise through bedroom windows or sleeping areas.

Ultra-Violet Protection

Protect your home furnishings from damaging UV radiation. Select a window with maximum UV fading protection if:

  • You have an investment in furnishings that should be protected from damaging, UV radiation.
  • You want to extend the life, color and appearance of your carpet, hardwood floors, furniture and drapes.

Four Glazing Options to Choose From


a. LoE-366 Coating
b. 99.5% Argon Gas Fill
c. Endur™ Stainless Steel Spacer

LoE3-366® PLUS

a. LoE-366 Coating
b. 99.5% Argon Gas Fill
c. Endur™ Stainless Steel Spacer
d. LoE-i89 Coating

Triple-Pane LoE3-366® ULTRA

a. LoE-366 Coating
b. 99.5% Argon Gas Fill
c. Endur™ Stainless Steel Spacer
d. LoE-180® Coating

Triple-Pane LoE3-366® PLATINUM

a. LoE-366 Coating
b. 99.5% Argon Gas Fill
c. Endur™ Stainless Steel Spacer
d. LoE-180® Coating
e. LoE-i89® Coating

Gilkey Windows is Proud to Partner with Cardinal Glass Coatings

LoE3-366® Glass (Pronounced “Low E cubed 366”)

LoE3-366 Glass delivers the ideal balance of solar control and high visibility.
The ultimate performance glass. It just might make all other low-E glass obsolete. It provides the highest levels of year-round comfort and energy savings, making it the perfect glass no matter where you live. The secret? An unprecedented triple layer of silver. This is beyond ordinary, setting a new standard.


The World’s Most Advanced Stainless Steel Spacer System.
Patented corrugated shape and design improves sightline temperature which reduces condensation. Inorganic dual sealed for long term durability and peace of mind. No other glazing system compares.

High Performance Coatings


Enhanced Performing Glass.
A special coating of indium on the indoor light reflects heat back into the room thus lowering U-Values for better winter time comfort.


Ultra Clear Performance.
A single layer of silver LoE ideal for added insulation when used in conjunction with LoE3-366® or LoE2-270®. Allows for high visible light.

Neat® Glass (Optional)

Naturally clean glass for windows that stay cleaner longer and easier.
Windows coated with Neat® harness the power of the sun’s UV rays to loosen dirt so water can rinse it away leaving windows virtually spotless.

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