How far must a hearth extend on the sides if it is less than 6 square feet?

In residential construction, building codes specify how far a hearth must extend based on its size to ensure safety and prevent fire hazards. When the size of the hearth is less than 6 square feet, the code typically requires that the hearth extend at least 8 inches on each side of the fireplace opening. This distance serves to contain any stray embers or heat generated by the fire, providing a margin of safety that helps to protect surrounding materials and reduce fire risk.

The requirement for an 8-inch extension is derived from standard practices in fire safety regulations and helps ensure that there is sufficient non-combustible material around the fireplace. This detail is crucial for both compliance with codes and for the safety of the residents. The hearth is an integral part of the fireplace system, and its dimensions are carefully established to achieve both functionality and safety.