What is "back priming" in carpentry?

Back priming in carpentry refers specifically to the process of applying primer paint to the back of exterior wood surfaces. This practice is important because it helps protect the wood from moisture, which can cause damage such as warping, rotting, and the growth of mold. By sealing the back of the wood, you create a barrier that minimizes the risk of moisture intrusion, significantly extending the lifespan of the wood product.

This method is especially crucial for wood that will be exposed to the elements, such as siding, trim, or any outdoor installations. Proper back priming is a proactive measure, ensuring that the wood is less susceptible to environmental factors that would otherwise compromise its integrity.