Section 7.2.11

Fire Stopping

Pitched roofs shall be constructed to provide adequate fire resistance and separation. Firestopping should be provided in accordance with approved design and manufacturers installation instruction.

  • Ensure all work completed is in accordance with the design, the Building Regulation and NHBC Standards.

  • Before roof covering work commences, ensure cavity is closed off at the top.

  • Cavity barriers must be placed between the last course of external masonry and the internal skin.

  • The cavity barriers must extend along the pitch of the gable.

  • ARC fire protection provided in the eaves. Ensure manufacturer’s instructions are followed.

  • Ensure all air gaps between properties are closed off.

  • Fire stopping over the party wall should be noticeable once underlay and battens have been installed.

  • ARC party wall fire stopping should be provided over party walls/spandrel panels.

  • Alternatively, fire resisting insulation can perform this function.

  • Fire stopping must extend 10mm above the top of the truss to allow for compression from the roof battens.

  • Fire stopping over the party wall should be noticeable once underlay and battens have been installed.

  • Fire resisting insulation provided between the roof battens underneath the tiles.

  • This must be of sufficient thickness to allow for a minimum of 10mm compression of material against the tile at the highest point.