Redwood Inspection Service
Behind the Grade Stamp
The Redwood Inspection Service (RIS) is the organization
exclusively authorized by the American Lumber Standard Committee,
Inc. to formulate grading rules for redwood lumber. These rules
are established in accordance with Product Standard 20-94, the American
Softwood Standard, issued by the U.S. Department of Commerce.
The RIS, a division of the California Redwood Association,
publishes and maintains the Standard Specifications for Grades
of California Redwood Lumber. In addition to redwood, the
RIS supervises the grading of whitewoods in accordance with the
WWPA and WCLIB grade rules.