The following are things to DO:

DO clean glass as soon as dirt and residue appear visibly.

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, nonabrasive 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 area 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.

DO read the entire GANA Bulletin on glass cleaning before starting to clean glass.

The following are things to NOT do:

DO NOT start cleaning without reading the entire GANA Bulletin on glass cleaning.

DO NOT use scrapers of any size or type for cleaning glass.

DO NOT allow dirt and residue to remain on glass for an extended period of time.

DO NOT begin cleaning glass without knowing if a coated surface is exposed.

DO NOT clean tinted or coated glass in direct sunlight.

DO NOT allow water or cleaning residue to remain on the glass or adjacent materials.

DO NOT begin cleaning without rinsing excessive dirt and debris.

DO NOT use abrasive cleaning solutions or materials.

DO NOT allow metal parts of cleaning equipment to contact the glass.

DO NOT trap abrasive particles between the cleaning materials and the glass surface.

DO NOT allow other trades to lean tools or materials against the glass surface.

DO NOT allow splashed materials to dry on the glass surface.