Resin Streaks

Resin streaks in lumber are similar to resin veins, in that they are a natural feature of some species of trees and are caused by the production of resin to protect the tree from damage. Resin streaks are typically larger and more concentrated than resin veins, and may appear as darker, thicker lines or blotches in the wood.

Resin streaks are most commonly found in softwood species, such as pine and fir, and can vary in size, shape, and color depending on the specific species of tree and the location of the streaks within the wood.

Like resin veins, resin streaks can impact the usability and appearance of lumber in certain applications.