What type of structural wood is most susceptible to termite damage?

Softwood is most susceptible to termite damage primarily due to its chemical composition and structural characteristics. Softwoods, which include species like pine, spruce, and fir, are generally less dense than hardwoods. This lower density means that they are easier for termites to chew through and consume.

Additionally, softwoods contain higher sugar content relative to hardwoods, making them more attractive to termites, which rely on cellulose as a food source. While hardwoods are also susceptible, they typically have a denser structure and may contain natural oils or resins that can deter insect damage. Engineered wood products and preserved wood are treated or designed in ways to resist damage from wood-destroying organisms, including termites. Therefore, in the context of structural wood vulnerability to termites, softwood stands out as the most susceptible category.