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Advertising supplement provided The Window & Door Manufacturers Association

Visual inspection standards

Also new in I.S. 1A is a chart which describes what types of defects are not acceptable when the door is in the installed condition. A chart describes to what degree a number of manufacturing, finishing and touch-up marks are unacceptable and must be repaired.

The new edition of WDMA I.S.1A further includes updates and clarification of several aspects of the veneer specification charts. The specification charts identify the color and matching, natural characteristics, manufacturing characteristics, and special characteristics that are allowed in the different veneer species and grades. The significant highlights and changes to that section include:

Additional Species — Anegre, Beech, Makore, and Sapele have been added to the specification charts, as these species are becoming more popular among specifiers. These woods are readily available and provide some alternative and striking appearances.

“Natural” Veneers — Historically, the terminology of “natural” in primarily Birch, but also Ash, Maple, Beech and Poplar veneer has created considerable misunderstanding concerning the appearance of a door face. The term “natural” when attached to these species allows the presence of light colored sapwood and dark colored heartwood in any combination, resulting in a wide variation of light and dark veneer appearance within a door face, and from door to door. Other terminology such as “white” will allow only light colored sapwood in the door face and the term “red or brown” will allow only dark colored heartwood in the door face. Additional highlighted text and glossary definitions have been added to caution the user of the “natural” appearance.

Slope and Swing—In the past, only rift veneers listed slope and swing restrictions which were in place to maintain the straight grain appearance of these door faces. Now quartered veneers are subject to the restrictions as well. Previously, quartered veneers have been subject to the restrictions, but only by association. The restrictions themselves have not been changed. Grain slope is restricted to 1 inch (25.4 mm) in 12 inches (305 mm) maximum, and sweep is 2 1/2 inches (63.5 mm) in 12 inches (305 mm) maximum.

 

Click For Additional Required Reading To receive AIA/CES credit, you are required to read this additional text. For a faxed copy of the material, contact Alan Campbell at WDMA, 847-299-5200 or email acampbell@wdma.com. The following quiz questions include information from this material.

 

About WDMA The Window & Door Manufacturers Association (WDMA) is a trade association representing the leading U.S. and Canadian manufacturers and suppliers of windows and doors for the domestic and export markets (www.wdma.com). For further information, contact WDMA at: 1400 East Touhy Ave., Suite 470, Des Plaines, IL 60018; phone 847-299-5200; e-mail: admin@wdma.com. 1400 East Touhy Ave. Suite 470 Des Plaines, IL 60018 admin@wdma.com www.wdma.com