Factory primed Bevel in a Box clap board siding saves a time consuming and costly coating step on the jobsite. It’s no longer necessary to wait for a break in the weather to prime and topcoat real Western Red Cedar Siding. Primed with a stain-blocking alkyd oil primer, on all 6 sides, our Primed Finger Jointed Vertical Grain Clear Red Cedar Bevel Siding, discourages moisture from moving through the siding and seeping under the finish. Clear Heart Vertical Grain solid Western Red Cedar segments are assembled through a high-tech process to create virtually invisible, precision fitted “finger” joints that are actually stronger and more weather resistant than the surrounding wood.