How To Fireproof Your Timber Frame

The fire resistance of a timber frame structure is achieved by protecting key areas such as: Walls, floors, roofs, door and window openings and electrical/plumbing service openings.

Certain methods can be implemented to fireproof the structure:

Cavity Barriers

  • Used within cavities to stop fire spreading.
  • Rigid methods used are preservative treated timber battens.
  • Flexible types are based on mineral wool.


  • Used within the structure to ensure the required fire resistance is achieved.
  • Typical materials used are non-combustible board or mineral wool.

Intumescent Fire Seal

  • Used at openings created by services in floors, walls and ceilings.

Fire resistance requirements for elements of construction are defined in the national building regulations.