What Is Ring Shake

Ring shake is the lengthwise separation of wood that occurs between and parallel to growth rings, diminishing lumber yields and values. … Results include relative frequencies of trees and logs with ring shake detected in dry and green lumber.

What causes ring shake?

A cup or ring shake follows the line of annual rings. The separation of the rings is generally caused during the growth of the tree, either by a check in the growth, or by bending and twisting under high winds.

What is a shake in wood?

Wood shake refers to wood roofing material that is created by splitting thin rectangles from a wooden log. There are two types of wood roofing materials – wood shake and wood shingles. … Wood shakes are typically sawn on one side and hand split on the other side, making them thicker than wood shingles.