Western Red Cedar and California Redwood are from the same genus and have many similarities. The main difference is that Western Red Cedar has much greater structural integrity for two basic reasons. Plus other important attributes.
First, Western Red Cedar has far greater flexural toughness (able to flex without shattering) than California Redwood.
Second, California Redwood has a higher density than Western Red Cedar and contains more oils. The effect of this is that California Redwood is more difficult to glue, does not retain stain very well, and is easier to split when screws are used to fasten pieces together
Western Red Cedar produces long, lightweight lengths of timber with a fine, straight grain and uniform texture that make it easy to cut, saw and nail with common tools. These features also contribute to its ability to be planed to a smooth surface or machined to any pattern. The lack of pitch and resin allows Western Red Cedar to hold glue bonds from a wide range of adhesives and provide a firm base for many types of paints and stains.
Flame Spread and Smoke Development Ratings - Cedar exceeds safety classifications and does not require preservative treatments.
Hot-dipped galvanized, aluminum and stainless steel fasteners are all corrosion-resistant and can be used to fasten Western Red Cedar.
Natural Preservative - Cedar contains natural preservatives that resist moisture, decay and insect damage.
