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FIREFLY Roof Cavity Closer

Verified by manufacturer 4 days ago

FIREFLY™ TBA

Mineral fibre ablative batt with bonded graphite strip for use with FIREFLY® systems.

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+44 (0) 1706 758817 Website

Application

  • The FIREFLY® Roof Cavity Closer is designed to extend the compartmentation line through the roof membrane to the outer tile/sheet.
  • It is installed below the membrane and can be used when installing a FIREFLY® Barrier or a FB180 Batt system.
  • Suitable for use both perpendicular and parallel to the gable end.


Description

Providing a fire-tested solution to close the void between roof membrane and tile at compartment lines, FIREFLY® Roof Cavity Closer is a specially manufactured combination of ablative batt and intumescent graphite. The bonded intumescent graphite strip will expand to fill the void to the outer tiles in the event of a fire.


The FIREFLY® Roof Cavity Closer should be friction-fitted into the void and edges “buttered” and sealed with FIREFLY® FR Intumescent Acrylic. Consult drawings on the

FIREFLY® website for full installation details for various scenarios.


Features and benefits:

  • Provides a practical fire-stopping solution to meet the requirements of Building Regulation Part B to close the void between the roof membrane and outer tiles.
  • Extends compartment fully to the exterior skin of the building.
  • Achieves compliance without the need to provide a 1500 mm wide protected zone (or “umbrella zone”) either side of the compartment line.
  • Sits below the membrane, so there's no need to remove tiles or cut the membrane to fit – suitable 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.
  • Tested to the requirements of BS EN 1363-1:2020 and provides a tested and certified solution as part of a FIREFLY® system.


System Products:

  • Ablative Coating
  • FR Intumescent Acrylic Sealant
  • 50 x 50 x 0.7mm Galvanized Equal Supporting Angle 1.2m
  • Timber Screw 80 x 7mm
  • Penny Washer 19mm

General information

Color

White

Finish

Coated

Material

Rock mineral wool

Shape

Rectangle

Length

1200 mm

600 mm

Width

150 mm

400 mm

300 mm

Height

50 mm

Warranty description

Other

Uniclass

Pr_25_80_81_51 Mineral wool fire-stoppingPrimary

CAWS

F30/18 Cavity closers

F30/180 Cavity closers

Specification data - Mineral wool fire-stopping

Material

-

Standard

Tested to BS EN 1363-1:2020.

Third-party certification

Guidance for specification option:

Fully tested with third party certification under application. Consult manufacturer for details.

Type

Rigid.

Density

180 kg/m³.

Facing

Ablative coated with bonded graphite strip.

Recycled content

None permitted.

Dimensions

1200 x 150 x 50 mm.

600 x 150 x 50 mm.

Guidance for specification option:

Stocked.

1200 x 400 x 50 mm.

1200 x 300 x 50 mm.

600 x 400 x 50 mm.

Guidance for specification option:

Made to order.

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Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Material

Rock mineral wool

Manufacturing plant location

Expected Life

Lifetime

Literature

FIREFLY Roof Cavity Closer

FIREFLY Roof Cavity Closer

FIREFLY Ancillaries & Fixings Summary

FIREFLY Ancillaries & Fixings Summary

FIREFLY®  Product Summary

FIREFLY® Product Summary