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FIREPRO Linear and Trapezoidal Firestops

FIREPRO Linear and Trapezoidal Firestops

Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type


A range of strips and pre-shaped blocks for fire-stopping gaps.

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+44 (0)1656 862621 www.rockwool.co.uk

A range of strips and pre-shaped blocks of ROCKWOOL high density stone wool insulation for fire-stopping gaps at junctions of fire-resistant walls and floors. Linear and Trapezoidal Firestop Systems have been developed to provide up to four hours' fire-stopping at the junctions of compartment walls and floors. Solutions include masonry walls with a density of at least 400 kg/m³, and include both fire integrity and insulation criteria for concrete decks, composite decks and simple profiled sheeting.


  • Provides up to four hours' fire-stopping.
  • Suitable for all walls from 400 kg/m³.
  • Totally enclosed option.
  • Available in small quantities.

General information

Uniclass 2015

Pr_25_80_81_51 Mineral wool fire-stoppingPrimary


F30/670 Head of non-loadbearing walls

G30/240 Fire resisting profile fillers

Specification data - Mineral wool fire-stopping

Product Reference

ROCKWOOL Linear Firestop 2A

ROCKWOOL Linear Firestop 2B


Aluminium Foil Faced Linear Firestop 3A

Dovetail Infill Strips

Linear Firestop 2

Plain Faced Linear Firestop 3A

Trapezoidal Firestop 3B


See 'Options' below and insert requirements.


See 'Options' below and insert requirements.

Standard product features


1000 mm.

Dovetail infill strips:

Narrow, rectangular compressible stone wool insulation strips for pinched installation, for fire-stopping dovetail-shaped voids in nominated deck profiles.

The products contains no blowing agents with ozone depletion potential (ODP) or global warming potential (GWP). Duo-Slabs are CFC-HCFC-HFC-free and 97% recyclable, and will not react with metal components or cause loss of plasticiser from PVC cable and pipes.

Product Options

Product reference:

– ROCKWOOL Linear Firestop 2A:

Flat/ linear insulation board available in varying thickness and widths. Rectangular stone wool insulation strips, minimum 5% compression, for fire-stopping linear gaps between head of wall and flat soffit or when trapezoidal deck voids are within the line of the wall.

– ROCKWOOL Linear Firestop 2B:

The 2B fire stop is trapezoidal and is available in a dovetail or a specific floor deck profile. Consult manufacturer for further information.


– ROCKWOOL Linear Firestop 2A:

15, 25, 30, 35, 40, 45, 50, 55, 60 mm.

– ROCKWOOL Linear Firestop 2B:

Consult manufacturer.


– ROCKWOOL Linear Firestop 2A:

75, 100, 120, 140, 150, 160, 170, 180, 190, 200 mm.

– ROCKWOOL Linear Firestop 2B

Consult manufacturer.

Third party certifications
  • Loss Prevention Certification Board: 022b
  • Association of Specialist Fire Protection (ASFP) Red Book listed: URN 026
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