The Fenestration and Glazing Industry Alliance (FGIA) announced that it updated two specifications for testing rainscreens:

  1. AAMA 508-21, Voluntary Test Method and Specification for Pressure Equalized Rainscreen Wall Cladding Systems.
  2. AAMA 509-22, Voluntary Test and Classification Method for Drained and Back Ventilated Rainscreen Wall Cladding Systems.

The two documents were last updated in 2014.

“The original AAMA 508 document was developed to allow panel system manufacturers a means for testing and evaluating their opaque wall panel systems for pressure equalization,” said Larry Livermore, chair of the FGIA Rainscreen Test Update Task Group. “This test method has been successfully used for over ten years and has been updated to address user concerns and to provide consistency for measuring test results. The document also clarifies the scope of the test method, which is applicable to vertical walls only.”

AAMA 508 details the requirements for test specimens, apparatus, test procedures, test reports and minimum performance criteria to be used in the evaluation of water penetration resistance, cavity pressure characterization and water entry into the cavity for an opaque panel pressure equalized rainscreen wall cladding system.

AAMA 509 helps select and specify those systems to meet project performance objectives. The update clarifies scope inclusions and exclusions as well as specimen setup and testing procedures aimed at maintaining consistency with referenced AAMA literature and partner specifications.

“The testing and classification procedures outlined in AAMA 509 for categorizing drained and back ventilated rainscreen wall cladding systems are an essential tool that the industry uses to evaluate the relative effectiveness of the tested cladding system to manage and limit water penetration to the underlying air/water barrier and to promote ventilation and drying of concealed components,” said Brad Carpenter, vice chair of the FGIA Rainscreen Test Update Task Group.