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Resources. Information. Support. From engaging videos on challenging technical issues to common industry terms, learn more about one of today’s most popular building envelope products.

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About Glass Expert Paul Di Cesare

Click here to read about Paul Di Cesare, PPG Senior Account Manager for the Northest Territory.

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Fun Glass Facts!

Established in 1883, PPG is the first commercially successful U.S. glass company.

Tempered glass is four times stronger than regular glass; heat strengthened is just two times stronger.

Pure glass is incredibly strong – it only scratches or breaks because of imperfections that can occur during the manufacturing process.

The first insulating glass units were developed in 1945 for the Pullman Car Company in Butler, PA.

If you see condensation on the outside of your low-e glass windows, it means the coating is working properly.

The word window comes from a Norse term translated "wind eye", for "eye on the weather."

A standard float tank can produce glass 24 hours/7 days a week for up to 15 years before it needs to be rebuilt.

Tempered glass deflects just as much as annealed glass. It also weighs the same.

Insulated Glass Units are made with two or more lites of glass with a hermetically sealed space filled with dry air or insulating gas.

Insulated glass units or double glazed units are a significantly more energy efficient glazing system than single glazing.

IGUs reduce the likelihood of interior condensation forming by providing a thermal barrier between the inside and the outside. The thermal barrier makes interior spaces more comfortable as it is easier to maintain a consistent indoor environment.

Thermal or insulation improvements achieved with an IGU work day and night in both summer and winter conditions, reducing heat entry and heat loss.

IGUs reduce sound transmission and provide quieter interior spaces.

Clear glass isn’t actually clear. It has a light green tint, which can be seen when held against a white background.

Due to the chemistry involved in the float glass process, all the colors of the rainbow are not possible. For example, orange, red, yellow and violet colored glasses cannot be produced using standard float technology.

How much does glass weigh?

Glass 6mm thick will weigh 2.9 lbs. per square foot.

What’s the difference between “float” glass and “flat” glass?

“Float” describes the process by which nearly all commercial “flat” glass is made, so “float” glass and “flat” glass are really the same thing.

Greater than 99 percent of the unused glass PPG manufactures is reutilized in production.

PPG ships the majority of its glass products on reusable steel racks, which has reduced the amount of disposable packaging that accompanies architectural glass products by 65 percent.

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