In our previous BLOG, Shakes Checks and Splits in Dimension Lumber, we discussed the differences between these three types of defects or characteristics found in dimension lumber. All three are commonly thought of as different types of “cracks” or, “splits” in the wood. Each will have different limits in various grades depending on their effect on the strength and/or appearance for a particular stress rated or non-stress rated grades. There remains, however, some confusion between shakes and splits. After all, both shakes and splits create a longitudinal separation, or a “split”, in the wood, so what is the difference?