FIREFLY Roof Cavity Closer 1200 x 300mm

The FIREFLY® Roof Cavity Closer is designed to extend the compartmentation line all the way through the roof membrane to the outer tile/sheet.

It is installed below the membrane and features a bonded intumescent graphite strip that will expand to fill the void to the outer tiles in the event of a fire.

Features

• Provides a practical fire-stopping solution to meet the requirements of Building Regulation Part B to close the void between roof membrane and outer tiles
• Extends compartment fully to the exterior skin of the building
• Achieves compliance without the need to provide a 1500mm wide protected zone (or “umbrella zone”) either side of the compartment line
• Sits below the membrane, so no need to remove tiles or cut membrane to fit – perfect for retrofit
• Can be used in conjunction with various materials within the compartment wall; including FIREFLY® flexible fire barriers, FIREFLY® FB180 Ablative Batt, timber, plasterboard and block/brickwork
• Layered mineral fibre, ablative coating on both sides, white appearance with intumescent graphite strip
• Suitable for use both perpendicular and parallel to the gable end
• 1200 x 300 x 50mm
• Vertical use only

Application

• Should be friction-fitted into the void and edges “buttered” and sealed with FIREFLY® FR Intumescent Acrylic
• Consult drawings for full installation detail for various scenarios

Testing

• Tested as a system against the requirements of BS EN 1363-1:2020
• Fully tested with 3rd party certification under application
• Provides a tested & certified solution as part of a FIREFLY® system