Window Glazing

Until recent years, clear glass was the glazing material of choice. Now there are several types of special glazing that help control heat loss and condensation.

1. Low emissivity or low-e glass has a special coating to reduce heat transfer back through the window. These coatings reflect 40% to 70% of the heat that is normally transmitted through clear glass while allowing the full amount of light to pass through.



2. Heat absorbing glass has special tints that allow it to absorb as much as 45% of the incoming solar energy to reduce heat gains.



3. Reflective glass has been coated with a reflective film to reduce the passage of light. During the summer, it aids in controlling solar heat.



4. Plastic glazing materials are another alternative, but they tend to be less durable.

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