Test fit the new shingle and mark two nail holes on it at the gap created by the upper shingles. Remove the new shingle, and from the back , punch new nail holes. Fit and nail the shingle in place. Slide a small piece of builder's felt under the upper shingles to cover the exposed nailheads. Hand-split shakes have a rough, textured look on the front and often smooth on the back.
Wood shingles are machine sawn smooth on both sides.
Generally, cedar is the highest performing wood for making shakes. But, treated pine shakes also perform well. Shakes are brown or reddish in color when new, but usually fade in the first year to a gray color. Wood shingles may be installed with only a slight gap between shingles. Repair With a nail ripper, remove the nails holding the damaged shake.