A ___ is an approved material used in the space between frame members to prevent the spread of fire for a certain period of time.

A ___ is an approved material used in the space between frame members to prevent the spread of fire for a certain period of time.

• A. Insulation
• B. Caulking
• C. Draftstop
• D. Vapor barrier

Answer: (C)

Fire stopping in concealed framing spaces is about slowing or stopping the spread of flame through gaps between framing members. The material used for this purpose is a draftstop—a fire-resistant insert placed in the cavity to create a barrier that resists burning for a specified period. This helps maintain compartmentalization of the structure and buys time during a fire. Draftstops are designed to meet fire-rating requirements and are made from materials capable of withstanding heat for the required duration. Other items like insulation, caulking, or a vapor barrier serve different roles—thermal efficiency, sealing gaps, or moisture control—and aren’t intended to provide the time-limited fire resistance that draftstops offer.

Fire stopping in concealed framing spaces is about slowing or stopping the spread of flame through gaps between framing members. The material used for this purpose is a draftstop—a fire-resistant insert placed in the cavity to create a barrier that resists burning for a specified period. This helps maintain compartmentalization of the structure and buys time during a fire. Draftstops are designed to meet fire-rating requirements and are made from materials capable of withstanding heat for the required duration. Other items like insulation, caulking, or a vapor barrier serve different roles—thermal efficiency, sealing gaps, or moisture control—and aren’t intended to provide the time-limited fire resistance that draftstops offer.