Volume 27, Issue 6- November/December 2013

Glass Tech
Questions and Answers
GANA Offers Educational Resources for Architects

by Ashley M. Charest

The Glass Association of North America (GANA) is a valuable resource for the commercial architectural community. The association has published more than 40 glass informational bulletins and more than 10 technical manuals. These resources were developed in response to either questions that we could see coming on the horizon or questions that we were already asked. Below are excerpts from some of our most popular documents, which relate to our most-asked questions.

The Weight of Architectural Flat Glass?
Taken directly from GANA 01-0408, Weight of Architechural Glass.

Approximate weights do not apply to patterned glass or products incorporating multiple lites of glass fabricated into an assembled product. Additional glass thicknesses are available. Consult individual manufacturers for detailed product availability. If the exact thickness is known, the exact weight may be calculated using a glass density of 158 lb/ft3 (2531 kg/m3).

What are the Most Popular Glass Standards?
While there are many standards for the glass industry, below is a list of the most common ones, taken from GANA 02-0409 Flat Glass Industry Standards. (See chart at right).

How Should Architectural Glass Be Cleaned?
This document is a very detailed piece, and below is the quick review. See GANA 01-0300 Proper Procedures for Cleaning Architectural Glass Products for the full list.

• Do clean glass when dirt and residue appear;
• Do determine if coated glass surfaces are exposed;
• Do exercise special care when cleaning coated glass surfaces;
• Do avoid cleaning tinted and coated glass surfaces in direct sunlight;
• Do start cleaning at the top of the building and continue to lower levels;
• Do soak the glass surface with a clean water and soap solution to loosen dirt and debris;
• Do use a mild, non-abrasive commercial window cleaning solution;
• Do use a squeegee to remove all of the cleaning solution;
• Do dry all cleaning solution from window gaskets, sealants and frames;
• Do clean one small window and check to see if procedures have caused any damage;
• Do be aware of and follow the glass supplier’s specific cleaning recommendations;
• Do caution other trades against allowing other materials to contact the glass;
•Do watch for and prevent conditions that can damage the glass; and
•Do read the entire GANA bulletin on glass cleaning before starting to clean glass.

For the complete list of technical documents available through GANA, visit and click on the Tech Center.

Architects' Guide to Glass & Metal
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