Wood Destroying Organism (WDO) Home Inspection Practice Exam

What type of structure is least likely to be affected by wood-destroying organisms?

1. A) Wood frame homes

2. B) Steel frame structures

3. C) Brick buildings

4. D) Concrete block homes

The correct answer is: B) Steel frame structures

Steel frame structures are least likely to be affected by wood-destroying organisms because these organisms, such as termites, wood borers, and certain fungi, specifically target wood as their food source and habitat. Steel frames do not contain any cellulose material that these organisms require for nourishment, significantly minimizing the risk of infestations and damage. In contrast, wood frame homes, brick buildings, and concrete block homes often incorporate wooden components, such as beams, framing, and even decorative elements, which can be susceptible to wood-destroying organisms. While brick and concrete may resist damage from these organisms, wood can still be present in various forms within those structures, making them vulnerable.