FGIA Analysis September/October 2023

October 17th, 2023 by Nathan Hobbs

Making the List: A New Revision to AAMA 303 Defines Acceptable Recycled Contents

By Glenn Ferris

The 2023 revision of AAMA 303, Voluntary Specification for Rigid Polyvinyl Chloride
(PVC) Exterior Profiles, more clearly defines what recycled material is allowed in PVC exterior
profiles used in doors, windows and skylights. Soon to be published by FGIA, it establishes
the minimum requirements for dimensional stability, impact resistance, weatherability, heat resistance, weight tolerance, heat build-up and lead compound content of such profiles. The
document was updated by the AAMA 303 Vinyl Profile Performance Standard Maintenance Task Group. It’s last update prior to this was in 2019.

Manufacturers’ Own Recycled PVC: includes clean, homogeneous PVC rework material or rework material containing a PVC cap layer generated from the manufacturer’s production of the same compound that meets the requirements of AAMA 109.

Known Recycled PVC: includes recycled PVC, but from another known source of compound other than the manufacturer’s own compound that meets the requirements of AAMA 109. The use of this material is limited to the profile PVC substrate that is not visible on the installed fenestration product and not exposed to weathering in the open, partially open and closed positions.

The manufacturer must provide evidence of meeting these requirements on an annual basis.

Revised Categories

Standard (mono): the extruded profile is constructed from a single homogeneous stream of rigid
PVC material throughout the entire profile. The general profile requirements in Section 4.0 are applicable.

Center Core Co-Extrusion: the co-extruded profile is constructed from two concentric streams
of rigid PVC materials. The entire thickness of each profile wall consists of a single homogeneous rigid PVC material. The visible areas of the profile are defined as surfaces that can be seen on an installed fenestration product and are exposed to weathering in the open, partially open and closed
positions.

Cap Layer Co-Extrusion: the profile is constructed of multilayered polymeric and rigid
PVC materials. The outer layer of the profile is visible, defined as surfaces that can be seen on
an installed fenestration product, and exposed to weathering in the open, partially open and closed positions. The substrate or inner layer(s) of rigid PVC material are non-visible and not exposed to UV rays. For cap layer co-extruded profiles, the corner assembly of the fenestration product is to
be weather resistant for welded corners, or mechanical corner assembly.

Center Core and Cap Layer Co-Extrusion: the profile is a combination of the center core and cap layer constructions as described in 8.2.2 and 8.2.3.

The rigid PVC and polymeric materials used for co-extruded profiles must meet performance requirements. As far as laminated profiles where film is applied to exposed exterior and interior surfaces, preparation and cleaning of the vinyl profiles prior to laminate application must be conducted as specified by the adhesive and laminate film manufacturers. The repair of minor scratches and the finishing of welded corner joints must be achieved with a suitable touch-up paint formulation.

For full details, the updated document will soon be available in the FGIA online store.

Glen Ferris is fenestration standards specialist for the Fenestration and Glazing Industry Alliance (FGIA).
gferris@fgiaonline.org

To view the laid-in version of this article in our digital edition, CLICK HERE.

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