ICC Commercial Building Inspector Practice Test

What type of wood treatment is specified for enclosed locations where drying cannot readily occur?

1. Pressure treated

2. Heat treated

3. Painted

4. Untreated

The correct answer is: Pressure treated

Pressure-treated wood is specifically designed for use in environments where moisture can be a significant problem, such as enclosed locations where drying may be difficult. This type of wood is treated with chemical preservatives that enhance its resistance to decay, insects, and fungal growth. The treatment process typically involves applying chemicals through pressure, which ensures that the preservatives penetrate deep into the wood fibers. In spaces that are enclosed and do not allow for proper air circulation or drying, moisture can become trapped, creating ideal conditions for mold and degradation. Pressure-treated wood mitigates these risks by providing a barrier against the moisture that could lead to structural failures or health hazards. Other options may not offer the same level of protection; for instance, painted wood can peel or wear off over time, exposing the wood beneath, while untreated wood is highly susceptible to decay in moist environments. Heat-treated wood, while stabilized against certain pests, does not have the same level of moisture resistance as pressure-treated wood. Therefore, pressure-treated wood is the most suitable choice for enclosed locations prone to dampness.