WDMA Prompts Document Changes

Changes proposed by the Window and Door Manufacturers Association (WDMA) have been adopted and are now part of the Voluntary Performance Rating Method for Mulled Fenestration Assemblies. The document, which is a referenced publication in the Standard/Specification for Windows, Doors and Unit Skylights - AAMA/WDMA/CSA 101/I.S.2/A440-05, has been published by the American Architectural Manufacturers Association (AAMA) as AAMA 450-06.

The new document and its changes are a direct result of revisions prompted by WDMA, said Jeffrey Lowinski, WDMA acting president.

"WDMA approached AAMA and asked them to open the document to consider our changes, starting the wheels in motion to revise the publication to make it more broadly acceptable and non-proprietary," he said. "We felt these changes were critical," Lowinski added.

The Voluntary Performance Rating Method for Mulled Fenestration Assemblies is referenced in the Standard/Specification for Windows, Doors and Unit Skylights - AAMA/WDMA/CSA 101/I.S.2/A440-05. The revised AAMA 450-06 and its changes will be included in the updated door, window and skylight standard, slated for release in 2007.

A mulled fenestration assembly is basically two or more products combined and installed in one opening. Prior to the changes proposed by WDMA, there was no defined procedure for determining the performance of these types of assemblies although they have become commonplace.

"The revised publication addresses any issues left up in the air in the 2000 AAMA 450-00 document," said Ken Wilcox, R&D Certification Engineer, Kolbe & Kolbe Millwork Co. and a member of the task group that helped revise the standard representing WDMA. Some of the changes, he added, also reflect WDMA's continued move to material-neutral testing and requirements.

In addition, a revised environmental stewardship statement released from the WDMA renews its focus on material-neutral, earth-friendly building. Lowinski said the statement was updated to include all materials used in the construction of its members' products, not wood only, and to broaden the organization's support for programs fostering environmental stewardship.

Posted at www.wdma.com under the "About WDMA" tab, the Environmental Stewardship Statement of Beliefs includes the following:

  • The membership of WDMA supports the intent of environmental stewardship aimed at protecting the earth's resources including sound environmental practices to protect our air, water, land and the human, animal and plant life of our planet.
  • WDMA encourages our members to make the most efficient use of materials and resources, to recycle or reuse materials where economically feasible, and to conduct business in a manner that supports environmental stewardship.
  • WDMA supports and defines sustainable forest management as the stewardship of forests that promotes the health, productivity and potential to fulfill relevant ecological, economic and social functions at the local, national and global levels, both today and for future generations. We support programs that promote the use of best forestry management practices and sustainable forestry activity.
  • We encourage and support our members to improve their practice of environmental stewardship and will work to assist them and the broader community in the implementation of sound environmental practices.

WDMA continues to represent the window, door and skylight industry through participation in green programs such as the U.S. Green Building Council's Leadership in Energy and Environmental Design (LEED) and the Green Building Initiative (GBI) Green Globes program. A new technical bulletin on LEED opportunities for doors has also been posted at the WDMA website.

For further information, contact WDMA at 847/299-5200 or admin@wdma.com.


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