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ROCKWOOL® Fire Barrier System
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ROCKWOOL® Fire Barrier System

ROCKWOOL Ltd Variant:
Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

A range of wired stone wool mats designed to be hung from the soffit or roof construction to extend the line of a fire/ compartment wall or to sub-divide extensive roof voids.

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+44 (0)1656 862621 https://www.rockwool.com/uk/


ROCKWOOL Fire Barrier systems offer essential protection against the spread of fire and inhibit the passage of smoke in concealed spaces.


As a labour saving, easy to install, vertically hung fire resistant insulation product, the ROCKWOOL Fire Barrier systems offer essential prevention against fire and smoke spread in hidden spaces. The ROCKWOOL Fire Barrier features a patented 'Quick Fix' support system, which offers a quick, cost effective solution for periods of up to 60 minutes. The ease of installation significantly reduces the risk of error, whilst extended drops can be catered for as the system has been tested to perform in void heights of up to 10.5 m. Fire Barrier are able to offer integrity and insulation protection periods from 15 to 120 minutes.

Features and benefits:

  • Patented ‘quick-fit’ system for up to one hour's fire resistance.
  • Suitable for void heights up to 10.5 m.
  • Provides airborne sound reduction.
  • Additional strength through wire mesh reinforcement.
  • Service penetration data available.


  • Fire Barrier Systems have been independently tested and assessed to BS 476: Part 22 by accredited laboratories. They are third party approved for performance and quality by the Loss Prevention Council Certification board (LPCB) and are listed in their Fire and Security ‘Red Book’ - certificate no. 022c. Certificates can be accessed online at www.rockwool.co.uk or www.redbooklive.com.
  • The product has been authorised for use in LUL surface and sub-surface premises when installed in accordance with this data sheet – please refer to the LUL Approved Product Register website www.LU-apr.uk for specific details.
  • Fire Barrier Systems are part of the ROCKWOOL SoundPro range of acoustic solutions. The correct use of Fire Barrier within structural cavities and voids will reduce the level of transmitted sound.

General information


Mineral wool


Width x length x thickness.

1000 x 3500 x 60 mm

1000 x 4000 x 50 mm

Uniclass 2015

Pr_80_77_76_53 Mineral wool duct slab insulationPrimary


F30/18 Cavity closers

F30/180 Cavity closers

K10/545 Cavity fire barriers within suspended ceilings

K10/530 Cavity fire barriers within partitions/ wall linings

K40/287 Cavity barriers

K40/60 Cavity fire barriers

K45/13 Unit suspended ceiling system alterations

P10/75 Wired small cavity barriers

P10/430 Wired mineral wool small cavity barriers

P10/440 Fire protection

P10/410 Flexible cavity barriers

Specification data - Mineral wool duct slab insulation Enhanced data



Foil facing one side.

Foil facing two sides.

Insulation thickness (minimum)

50 mm.


Not required.

ROCKWOOL Fire Barrier Angle Support.

ROCKWOOL Fire Barrier Clamping Plate.

0.9 mm galvanized annealed wire.

Not supplied by ROCKWOOL.

1.5 mm galvanized annealed wire.

Not supplied by ROCKWOOL.


Euroclass A1 non-combustible.

Acoustical Performance

Up to 50 dB.


4000 mm.


One side.

Two sides.


1000 mm.

Third party certifications

  • LPCB approved: cert.No. 022c

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