How much clearance is required between wood framing and a masonry chimney passing through the roof opening?

The correct clearance required between wood framing and a masonry chimney passing through the roof opening is 2 inches. This requirement is established to prevent any potential fire hazards that could arise due to the heat emitted from the chimney.

Chimneys can become very hot during operation, and if the wood framing is too close, there is an increased risk of catching fire. Maintaining a minimum clearance of 2 inches allows for adequate ventilation and reduces the risk of heat transfer to nearby combustible materials. This clearance guideline is particularly important in roofing applications to ensure safety in residential and commercial structures.

Clearance requirements are part of building codes and standards that aim to protect life and property. Following these codes ensures that construction practices are safe and compliant with local regulations, which is essential for any general contractor to understand and apply in their work.