Why are end cuts of treated wood particularly vulnerable?

End cuts of treated wood are particularly vulnerable because they can absorb moisture more easily and are often not treated as thoroughly as the rest of the wood. The end grain of the wood is more porous than the sides, allowing moisture to penetrate. This increased moisture absorption can lead to issues such as decay, mold growth, and insect infestation if the end cuts are not properly sealed or treated.

Typically, the process of treating wood focuses on the surface areas, and end cuts may not receive the same level of preservative penetration and protection. This lack of treatment at the ends significantly elevates the risk of deterioration, making them prime targets for moisture-related damage and insect attacks. Therefore, ensuring that end cuts are properly treated and maintained is essential for preserving the integrity and extending the lifespan of treated wood.