The ASTM document C1503 – Standard Specification for Silvered Flat Glass Mirror, developed by the ASTM C14.08 committee, has been reapproved. The Glass Association of North America’s (GANA) mirror division has been very involved over the years with the development of ASTM documents.

“GANA’s mirror division was instrumental in first developing ASTM C1503, and we recently reviewed and agreed to re-publish the standard,” says Mandy Marxen, GANA mirror division chair and vice president of marketing for Gardner Glass Products Inc. “It is a defining technical document for silvered flat glass mirror and the Mirror Division encourages everyone to get it into their company’s list of referenced documents.”

According to ASTM, “this specification covers the requirements for silvered flat glass mirrors of rectangular shape supplied as cut sizes, stock sheets or as lehr ends and to which no further processing (such as edgework or other fabrication) has been done. The quality requirements of silvered annealed monolithic clear and tinted flat glass mirrors up to a certain thickness are also discussed. The mirrors are intended to be used indoors for mirror glazing, for components of decorative accessories or for similar uses.”

The standard specification is available as C1503-08(2013) in the Book of Standards, volume 15.02.

Also within ASTM C14.08, the group is currently working on a new practice for cleaning architectural flat glass. According to the scope, “airborne and waterborne debris accumulates on glass surfaces and creates a need for the glass to be cleaned in order to preserve its integrity. There are various types of glass and glass coatings that must be considered prior to cleaning. In addition, unprotected glass during construction can become covered with various types of construction debris which may affect the cleaning practice. It is anticipated that this standard would be utilized by many interested parties in the construction industry, including manufacturers, architects, builders, window cleaners and government agencies.”

Look to USGNN/USGlass magazine for more on the development of this standard.