What must be installed in areas where concealed draft is a concern?

In areas where concealed draft is a concern, the installation of fireblocking is crucial. Fireblocking is a construction technique that involves filling and sealing openings and cavities in order to slow the spread of fire and smoke through concealed spaces within walls and ceilings. By effectively blocking drafts, fireblocking also helps contain potential fire hazards, ensuring that flames and heat do not travel freely through hidden areas, which can be especially dangerous in a commercial building setting.

While air barriers, smoke barriers, and insulation each play important roles in building performance, they do not specifically address the issue of concealed draft in the same comprehensive manner as fireblocking does. Air barriers focus more on controlling air leakage to improve energy efficiency, while smoke barriers are designed to prevent smoke movement during a fire, and insulation primarily reduces heat transfer. Therefore, in the context of protecting against concealed drafts, fireblocking stands out as the most relevant solution.