Our fire door cores are engineered solid core blanks for building certified fire-rated doors, supplied unfinished and ready to face in any veneer, laminate, or paint finish. The range covers FD30 44mm cores for 30 minutes of fire resistance and FD60 54mm cores for 60 minutes, giving door manufacturers, joiners, and fabricators a dependable base for compliant fire door assemblies.

Each core is built for strength, stability, and consistent fire performance, with engineered densities of 525 kg/m³ for the FD30 and 555 kg/m³ for the FD60 Fire core range, and 640 kg/m³ for the Strebord range. Strebord cores certified under the Q-Mark Enhanced Lifetime Performance of Doors scheme, for full traceability and long-term confidence, alongside standard core blanks. Bespoke requirements can be discussed on request.

Why choose Qdoors fire door cores

1. FD30 44mm and FD60 54mm engineered solid cores for certified fire doors.
2. Q-Mark-certified Strebord cores are available, alongside standard blanks.
3. Consistent engineered density for reliable strength and fire performance.
4. Supplied unfinished and ready to face in any veneer, laminate or paint finish.

What is a fire door core?
A fire door core is the engineered solid inner blank that gives a fire door its strength and fire resistance. It is faced with a veneer, laminate, or paint finish and fitted with the correct lippings, glazing, and ironmongery to form a complete certified fire door.

What is the difference between FD30 and FD60 cores?
An FD30 core is 44mm and provides around 30 minutes of fire resistance, while an FD60 core is 54mm and provides around 60 minutes. The choice depends on the fire rating required for the opening.

Are these solid core or hollow core?
These are solid, engineered fire cores, which are the opposite of a lightweight hollow core. The dense solid construction is what delivers the fire resistance and the heavy, substantial feel of a fire door.

What does the Q-Mark certification mean?
The Strebord cores are certified under the Q-Mark Enhanced Lifetime Performance of Doors scheme, an independent third-party scheme that provides traceability and assurance of consistent, long-term performance.