Glass Industry

AAMA and FMA Release Window Installation Standard

FMA/AAMA 100-07, a standard addressing window installation, has been released jointly by the American Architectural Manufacturers Association (AAMA) and the Fenestration Manufacturers Association (FMA). According to AAMA technical director John Lewis, the 13-page document titled Standard Practice for the Installation of Windows with Flanges or Mounting Fins in Wood Frame Construction specifically addresses new construction of no more than three stories in height utilizing a membrane/drainage system.

The document also provides minimum requirements for window installation based on current best practices and applies to windows employing a mounting flange or fin that is attached and sealed to the window perimeter frame and is designed as an installation fastening appendage.

The techniques demonstrated in this document have been developed specifically to allow incidental water entering from superficial cracks, either in the cladding, window joinery or installation joints around the perimeter of the window, to drain onto the membrane drainage plane and to exit to the building exterior.

"This standard is specifically designed for installations subject to hurricane-force wind and water exposure, particularly in the coastal Southeast United States, and addresses buildings that will be at high risk for water intrusion. Thus, preventative measures have been included that are above normal installation practices," Lewis adds.

Source: USGlass News Network