Insulated Glass

The popularity of insulated glass continues to grow among residential and commercial property owners who are seeking a more energy-efficient solution for their homes and businesses. At Western States Glass, Inc. our IG line is of the highest quality.  We use the best sealants, spacers, and desiccants available and we dual seal every unit. Our insulated glass products include the use of:

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  • Any combination of glass in our inventory
  • Soft coat Low-E glass by PPG, Cardinal, Pilkington and Guardian
  • Low-E laminated
  • Flat grids – 5/8 and 13/16 white, bronze and aluminum
  • Contoured grids – 1” white
  • Sealants for second seal
    • Polysophide seal  – Most preferred
    • Polyurethane seal – For Low-E and all high performance glass
    • Silicon seal – For special applications
  • Super spacer

4 Factors – Determining Glass Energy Performance

  1. Visible Light Transmittance (VLT) – Measures the amount of visible light that passes through glass.
  2. Solar Heat Gain Coefficient (SHGC) – The measurement of how well glass absorbs heat generated by sunlight.  Measured on a scale of 0-1, glasses with a lower SHGC value block out more heat from transmitting.
  3. Light to solar Gain (LSG) – A measure of how well glass allows natural light to pass through while blocking out solar heat.  It is the ratio between the Visible Light Transmittance and Solar Heat Gain Coefficient and describes the relative energy-efficiency of glasses.  While not possible, the ideal environmental performance of glass would be to transmit 100% of the sunlight while absorbing 100% of the solar heat.
  4. U-Value – The measurement of heat transfer through glass and other building materials.  Glasses with lower U-Values are better insulators.

Understanding an Insulated Glass Unit


If you are interested in ordering insulated glass products that achieve optimum energy-efficiency, contact Western States Glass, Inc. today.

Contact Us

Contact Western States Glass, Inc. if you are interested in placing an order with us.

Western States Glass Inc.
790 W 12th St
Long Beach, CA 90813

Toll Free: 800-859-2060
Phone: 562-983-1374

Toll Free Fax: 877-596-9982
Fax: 562-590-9981

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