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.