North Carolina Building Contractor License Practice Exam

What is the required hearth extension in front of a fireplace with an opening less than 6 square feet?

1. 12 inches

2. 16 inches

3. 20 inches

4. 24 inches

The correct answer is: 16 inches

When determining the required hearth extension in front of a fireplace, the specific dimension is crucial for safety and efficiency. For a fireplace with an opening less than 6 square feet, the standard hearth extension requirement is 16 inches. This dimension is established to ensure that any stray embers or heat are effectively contained, minimizing the risk of fire hazards. The hearth extension serves as a protective barrier, providing a safe space where hot embers and debris can land without igniting nearby materials. In the context of building codes and safety regulations, following these requirements is essential for compliance when installing fireplaces. The hearth extension not only enhances safety but also contributes to the overall functionality and aesthetics of the fireplace installation. Understanding these specific measurements allows contractors and builders to adhere to best practices within the industry.