Requirements for Fiberglass Coatings Evolve
by Ken Brenden
In early 2001, the first standard governing the use of fiberglass
fenestration profiles, AAMA 305-2000 (updated in 2006), was released.
By the end of 2003, AAMA established a Fiberglass Material Council (FMC)
to further develop standards and promote fiberglass as a viable fenestration
Because the long-term durability of fiberglass profiles—more generically
termed “fiber reinforced thermoset profiles”—depends largely on the applied
coatings, the FMC embarked upon a project to develop specifications for
factory-applied organic coatings, listed below. These define the capabilities
and expectations for “good, better and best” levels of finishes for fiberglass
fenestration profiles, addressing different performance needs for film
integrity, exterior durability and general appearance for different applications
and market needs.
for future development are specifications for performance of exterior
stained products and information on solar reflectivity of exterior façades."
• AAMA 623-07, Voluntary Specification, Performance Requirements and Test
Procedures for Organic Coatings on Fiber Reinforced Thermoset Profiles
• AAMA 624-07, Voluntary Specification, Performance Requirements and Test
Procedures for High Performance Organic Coatings on Fiber Reinforced Thermoset
• AAMA 625-07, Voluntary Specification, Performance Requirements and Test
Procedures for Superior Performance Organic Coatings on Fiber Reinforced
The table (below) summarizes the scope of the performance parameters and
increasing performance requirements set forth by the three specifications.
Future Specification Activity
The FMC already is updating these specifications, focusing on clarification
of chemical resistance testing, in response to inquiries from testing
operations noting variances in results associated with different coating
colors. AAMA 623 weathering exposure requirements also are being increased.
Earmarked for future development are specifications for performance of
exterior stained products and information (possibly leading to a specification)
on solar reflectivity of exterior façades, which has potential
to address the urban “heat island effect” of various materials on vertical
surfaces (perhaps similar to “cool roof” requirements).
As materials and performance requirements evolve, it is important that
consensus groups such as AAMA keep specifications up to date so the industry
can stay on the cutting edge..
Ken Brenden serves as technical standards manager for the American
Architectural Manufacturers Association in Schaumburg, Ill. He may be
reached at firstname.lastname@example.org.
His opinions are solely his own and do not necessarily reflect those of this
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