ANSI/WMA 100
Developed and maintained by World Millwork Alliance, the ANSI/WMA 100 sets a national standard for testing and qualifying side-hinged exterior door systems.
Structural Performance Standard
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WMA 100 Revisions – Public Comment Period
WMA’s voluntary standard, ANSI/WMA 100-2023, “Standard Method of Determining Structural Performance Ratings of Side-Hinged Exterior Door Systems and Procedures for Component Substitution” is being revised in accordance with WMA’s standards development procedures and is now available for public comment.
The WMA 100 determines the structural design pressure rating of side-hinged exterior door systems (SHEDS) using the ASTM E330 test method. After a rating is established, the standard provides protocols for qualifying a component for substitution within the rated door system. It also includes slab stiffness testing procedures for determining substitution qualification.
Revisions proposed by WMA's Regulatory Affairs & Standards Development Committee (RASDC) are in strikethrough and underline format and can be accessed below. Primary revisions proposed expand the scope of the standard to include air leakage testing in accordance with ASTM E283/E283M and water penetration testing in accordance with ASTM E331 and ASTM E547.
The 45-day public comment period ends September 21, 2026. Written comments and questions can be emailed to Jessica Ferris, Director of Regulatory Affairs & Standards Development. Please use strikethrough and underline format when adding any changes to the text.
Proposed Revisions to ANSI/WMA 100
About the ANSI/WMA 100 Standard
World Millwork Alliance is a standards-developing organization (SDO) accredited by the American National Standards Institute (ANSI). As an SDO, WMA maintains the ANSI/WMA 100 in accordance with ANSI’s Essential Requirements through WMA’s Procedures for the Development, Revision, Reaffirmation, Withdrawal, and Discontinuance of WMA Standards.
The ANSI/WMA 100 Standard:
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Approved by ANSI as an American National Standard
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Uses the ASTM E330 test method to obtain a design pressure rating for side-hinged exterior doors
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Defines methods for qualifying exterior door system components for substitution in the rated system, thus limiting the amount of testing required
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Contains door slab stiffness testing procedures for determining component substitution qualification
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The standard can be used to meet wind load testing and labeling requirements in jurisdictions that have adopted the 2015 and later editions of the International Residential Code (IRC)
WMA members can access the ANSI/WMA 100 standard for free by clicking below to log into the Member Portal and selecting WMA 100 from the Resources menu. Non-members can submit a request to purchase the ANSI/WMA 100 standard.
WMA Members:
Non-Members:
Technical Interpretations
A technical interpretation of the WMA 100 standard, in response to a written request for interpretation, is a written explanation/clarification of a specific provision in the standard as determined by either the WMA Interpretations Policy Committee (IPC) or WMA’s Director of Regulatory Affairs & Standards Development. The requester shall decide whether to request an ‘official’ or ‘unofficial’ interpretation. WMA's Standard Interpretations Procedures can be viewed HERE.
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Below are Interpretations issued to-date by WMA’s Interpretations Policy Committee (IPC). When appropriate, Interpretations will be considered by WMA’s Regulatory Affairs & Standards Development Committee (RASDC) during the next revision cycle.
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2017 Interpretations:
Official Interpretation
How To Request:
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A written request using the approved Interpretations Request Form (available by clicking the button below)
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Requests must meet the requirements of Section 1 of the WMA Standard Interpretations Procedures
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Interpretation determined by WMA’s Interpretations Policy Committee (IPC) and posted to the WMA website
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Response time: 30-45 days
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Click below to download the request form. Email the completed form to mail@worldmillworkalliance.com.
Unofficial Interpretation
How To Request:
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A written “Request for Unofficial Interpretation” to WMA’s Director of Regulatory Affairs & Standards Development
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Interpretation determined by WMA’s Director of Regulatory Affairs & Standards Development
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Response time: 10 days
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Click below to contact Jessica Ferris and request an Unofficial Interpretation.
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Still Have Questions?
We're Here to Help.
If you have questions about the ANSI/WMA 100 Standard, interpretation procedures, or accessing the document, please reach out to Jessica Ferris, WMA’s Director of Regulatory Affairs & Standards Development. She is available to assist with interpretation guidance, questions, and documentation support.