The purpose of this AAMA Voluntary Guideline is to
provide specific information to assist industry
professionals in selecting the appropriate adaptations to
the existing testing standards for application to field
investigations of fenestration products. ASTM E 2128
provides the foundation for field investigations of water
leakage in building walls. This document is designed to
provide supplemental guidance and highlight required
information and actions regarding fenestration product
investigations. ASTM E 2128 identifies seven steps of
forensic investigations and this document provides
additional information regarding each step, grouped into
two categories: four steps prior to testing and three steps
during and after testing.