Schaumburg, Ill. — AAMA 633-11, “Voluntary Specification, Performance Requirements and Test Procedures for Exterior Stain Finishes on Wood, Cellulosic Composites and Fiber Reinforced Thermoset Window and Door Components” has been published by the American Architectural Manufacturers Association (AAMA). This standard covers factory-applied coatings intended for service in exterior environments and describes test procedures and performance requirements for exterior stain finishes for windows, doors and similar building products.

AAMA 633-11 is intended to assist the architect, owner and contractor in specifying and obtaining factory-applied stain finishes. Ken Brenden, AAMA’s technical services manager, noted that “the architectural community has recognized the outstanding attributes associated with wood, cellulosic composite and fiber reinforced thermoset components for many related building products.” As such, “AAMA created a technical document in order to demonstrate product performance to our organization’s customers.”

Provisions within AAMA 633-11 include a general overview, specific test specimens and procedural tests sampling for color uniformity, specular gloss and film adhesion, chemical resistance and detergent resistance, humidity resistance, cold crack cycle and oven aging and weather exposure.

“Many window and door profiles have exterior stain finishes to provide selected colors and appearances and to enhance the durability of the product,” says Wallace Kesler (Valspar), chair of the AAMA Exterior Stain Task Group, who spearheaded the development of this specification together with the Fiberglass Material Council and the Wood and Cellulosic Composite Material Council. “AAMA has now set the one performance specification for exterior stains finishes, which will provide a good level of performance of film integrity, exterior durability and general appearance over a period of many years.”

The “Voluntary Specification, Performance Requirements and Test Procedures for Exterior Stain Finishes on Wood, Cellulosic Composites and Fiber Reinforced Thermoset Window and Door Components” is available to AAMA members at a cost of $10 for download, $20 for a paper copy and $25 for a CD. Non-members may purchase the document at a cost of $30 for download, $60 for a paper copy and $66 for a CD. To order AAMA 633-11, visit the AAMA Online Publication Store.

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