The American National Standards Institute (ANSI) is a Washington, D.C.-based, private,
nonprofit organization that serves as administrator and coordinator of a private-sector
national standards system referred to as American National Standards (ANS). ANSI
membership comprises nearly 1,000 companies, organizations, government agencies
and institutions; NRCA is an ANSI member. ANSI standards directly affect businesses
in nearly every industry.
ANSI facilitates the development of ANS by accrediting the procedures of standards-developing
organizations. Accreditation by ANSI signifies the procedures used by the standards
body meet ANSI's essential requirements for openness, balance, consensus and due
Examples of roofing-related standards developed using the ANS process are:
ANSI/ASHRAE 90.1, "Energy Standard for Buildings Except Low-Rise Residential Buildings"
ANSI/ASHRAE 90.2, "Energy-Efficient Design of Low-Rise Residential Buildings"
ANSI/SPRI ES-1, "Wind Design Standard for Edge Systems Used With Low Slope Roofing
ANSI/SPRI RP-4, "Wind Design Standard for Ballasted Single-ply Roofing Systems"
ANSI/SPRI WD-1, "Wind Design Standard Practice for Roofing Assemblies"
ANSI/UL 1703, "Flat-Plate Photovoltaic Modules and Panels"
ANSI/UL 2390, "Test Method for Wind-Resistant Asphalt Shingles with Sealed Tabs"