This post is part of the Green Materials Report series.  GBE is providing information on various building materials and what makes them green.  Each post focuses on one material.  We will be looking at the ingredients in the material, how it is used, what makes it green, and any green product certifications that it has earned.  We hope to develop a database of information to help consumers make informed choices about what goes in their buildings.  Enjoy the series! California Redwood California…