AAMA Updates Standards for Cellulosic Composite Profiles
January 28, 2014
The American Architectural Manufacturers Association published AAMA 309, which provides a means of classifying rigid thermoplastic cellulosic composite profiles, and AAMA 311, which establishes minimum performance criteria.
AAMA 309-13 spells out the nine-digit classification system that defines various ranges of properties. The resulting class designation number is easily decoded using a table provided in the standard, according to the association. This 2013 revision adds criteria for measuring heat build-up in pigmented profiles and a requirement for durability when subjected to fabrication and installation processes.
AAMA 311-13 establishes the minimum requirements for dimensional stability, screw withdraw, thermal cycling, weatherability, heat resistance, heat build-up and lead content of profiles classified in accordance with the properties described in AAMA 309 as used in windows, doors and skylights. It provides the basis for certification of composite profiles under the protocols of AAMA 109. In addition, AAMA 311-13 specifies in-process manufacturing plant quality-control requirements, defining sampling rates and ASTM testing protocols.
“Due to the increased popularity and use of thermoplastic cellulosic composites...architects and specifiers are finding these standards useful for verifying product performance, as well as in comparing their properties and performance to those of other polymeric profiles,” says Jack Reed, senior technical service engineer for Arkema, Inc. and chair of the AAMA task group. “They form the foundation of a quality assurance system for buyers, specifiers and fabricators of these products, as well as a reference point for national code organizations and local code officials.”
AAMA-309-13 and AAMA 311-13, along with other polymeric profile standards, are available in AAMA’s Online Publication Store.