Rift and quarter sawn hardwood Ocean Beach CA is premium grade because it is stable, beautiful, and is a select grading of wood. The log is cut in quarters and sawn into planks, ensuring long linear grains and medullary watermarks that pop and give character. This procedure is usually done to oak, especially white oak flooring. Medullary capillaries are the water system in the tree to carry the water from the core to the outer bark layers. Call geneva Flooring in Miramar CA to see examples of this in our flooring showroom.