Redwood Inspection Service
division of California
The Redwood Inspection Service is accredited
by the Board of Review of the American Lumber Standard Committe,
Inc. as the exclusive rules-writing agency for redwood lumber.
Here is how the Redwood Inspection Service operates:
- Expert RIS supervisors act as
grading monitors of the redwood products produced by the redwood
throughout Northern California.
- RIS trains graders for individual
mill members and from time to time spot checks performance
in accordance with ALSC, Inc. regulations.
- RIS reviews member mill’s
kiln drying procedures.
- RIS may serve as an impartial
arbiter in settling questions '' of product quality and quantity."
- RIS headquarters in Novato communicates with
codewriting agencies to establish or maintain building standards
pertaining to the usage of redwood in regional
and local building codes.
Specifications for Grades of California Redwood Lumber are in accordance with the National
Institute of Standards and Technology Voluntary Product
Standard PS 20 and have been accredited by the
Board of Review of the American Lumber Standard
These Standard Specifications apply
to California Redwood (Sequoia sempervirens) and to no other species.
818 Grayson Road, Suite 201
Pleasant Hill, CA 94523