Which door type offers the best fire protection?

Which door type offers the best fire protection?

• A. Solid core
• B. Hollow core
• C. Raised panel
• D. Fiber glass

Answer: (A)

Fire protection for doors relies heavily on the door’s interior construction. A solid core door has dense, heavy material inside, which slows heat transfer and helps the door maintain its integrity longer during a fire. That mass and the potential for a fire-rated core make it the most reliable choice for fire resistance among common door types. Hollow core doors, by contrast, contain air-filled spaces that heat up and fail more quickly, offering far less protection. The raised panel description refers to a style, not a guaranteed level of fire resistance, since such doors can be either hollow or solid and aren’t inherently fire-rated. Fiberglass doors can be engineered to be fire-rated, but unless a specific fire rating is provided, a solid core door remains the strongest default option for fire protection.

Fire protection for doors relies heavily on the door’s interior construction. A solid core door has dense, heavy material inside, which slows heat transfer and helps the door maintain its integrity longer during a fire. That mass and the potential for a fire-rated core make it the most reliable choice for fire resistance among common door types. Hollow core doors, by contrast, contain air-filled spaces that heat up and fail more quickly, offering far less protection. The raised panel description refers to a style, not a guaranteed level of fire resistance, since such doors can be either hollow or solid and aren’t inherently fire-rated. Fiberglass doors can be engineered to be fire-rated, but unless a specific fire rating is provided, a solid core door remains the strongest default option for fire protection.