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PC-FS Firestop & PC-CB Cavity Barrier - Fire Stop and Cavity Barrier

Verified by manufacturer 1 month ago

PC-CB30 Cavity Barrier (Void Width 20–50 mm)

Siderise Group Variant:
Product certifications:
  • IFCC

    IFCC

    Certificate type

Factory-engineered stone wool Lamella passive fire protection for compartmentation in precast concrete façade applications.

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Application

Siderise PC-FS firestops and PC-CB cavity barriers are designed for use in precast concrete cladding systems, where they can be applied to firestopping, horizontal perimeter interface sealing, and acoustic barrier functions. 

PC-FS and PC-CB products have been tested in both horizontal and vertical orientations in accordance with BS EN 1366-4:2006+A1:2010, “Fire resistance tests for service installations – Linear joint seals”. These tests assess the fire-resistance performance of the systems when installed between compartment floors or walls and external precast concrete cladding.

Siderise’s lamella construction used in PC-FS and PC-CB incorporates vertically oriented stone wool fibres. This construction has been developed to support movement accommodation within the stated performance parameters and expected 60-year service life of the product. The lamella features a special formulation of stone wool insulation with vertically oriented fibres, instead of a horizontal fibre structure.

The fibres are laterally compressed under controlled factory conditions to promote consistency of density across the product sections. This compression is retained by heat-applied reinforced foil facings. The pre-compressed vertical fibre structure contributes to the functional characteristics of the system. It allows the product to be supplied as a single dry-fit unit and enables compression within the void, supporting its friction-fit installation method. The design can also eliminate the requirement for a secondary wet seal where this is appropriate to the project design and specification.

Description

Siderise PC-FS firestops and PC-CB cavity barriers are manufactured using a method that provides resilient lateral compression. This facilitates installation, ensuring the requisite tight fit and enhancing the fire integrity of the product.

Standard systems:

The materials can be either supplied as pre-cut units to suit a specified void size or in sheet form for cutting on-site. Standard sheet products are supplied 1200 x 1200 mm which may prove beneficial when the actual void size is not known or where it varies significantly. Please note that when ordered in sheet form, the requisite quantity of fixing brackets needs to be purchased separately.

Pre-cut strips are available in 1mm increments of width to suit the cavity size to provide a tight compressive fit within the void - Please see Table 1 regarding fit type. Each pre-cut unit is supplied with appropriate fixing brackets as part of the system.

The standard fixing brackets are supplied in galvanized mild steel and stainless steel in a flat form for folding on-site. Fixing brackets are provided pre-drilled, enabling uncomplicated installation in accordance with project requirements. Different size brackets are available according to the cavity size – please manufacturers technical datasheet.

All fixing brackets are to be mechanically secured to the substructure with suitable non-combustible fixings.

Features and benefits:

  • Fire resistance: PC-FS60 and PC-FS120 firestops are certified to deliver 1 hour and 2 hours fire resistance, respectively. PC-CB30 cavity barrier is certified to deliver up to 30 minutes fire resistance. See the product technical data sheet for full details.
  • Supplementary fire test data: The PC-FS and PC-CB range benefits from supplementary test evidence to aid the design team and project fire engineer in their holistic review and provide additional support for a wider range of project conditions. Supplementary data includes: 
  1. Firestop interfacing with a concrete cladding hanger (BS EN 1366-4: 2006+A1: 2010). 
  2. Firestop to the end of flexible wall construction (BS EN 1366-4: 2021). 
  3. Firestop with Siderise bracket securement to underside of slab edge to assist installation methodology (BS EN 1366-4: 2006+A1:2010). 
  • Installation flexibility: PC-FS Firestop and PC-CB Cavity Barrier can be fit from above or below the slab — making them ideal for where topside access is limited, or sequencing requires alternative installation approaches, whilst a bracket-free installation in narrow cavities offers a practical advantage for 20-50mm cavities where access is also limited. 
  • 60-year design life: To confirm in-application durability and robustness in their ability to maintain their form and performance when exposed to specific use conditions, PC-FS Firestop and PC-CB Cavity Barrier have been subjected to EOTA Technical Report 024 ‘Type X’ accelerated age testing - the harshest category, which replicates exposure to rain, UV, high temperatures, and frost and thaw cycles. 

General information

Color

Silver

Guidance for specification option:

Silver aluminium top and bottom facings.

Brown

Yellow

Green

Manufacturer guidance

Solid, green-brown exposed edges with silver aluminium on both facings.

Finish

Foil

Material

Stonewool

Aluminium

Shape

Rectangle

Guidance for specification option:

Rectangular faces predominantly.

Other

Guidance for specification option:

Cuboid.

Length

1200 mm

Width

-

Manufacturer guidance

Please refer to void widths and compression values provided.

Height

75 mm

90 mm

100 mm

120 mm

150 mm

Manufacturer guidance

Please see product thickness.

Warranty description

60 year

Guidance for specification option:

60 years design life.

Uniclass

Pr_25_80_81_51 Mineral wool fire-stoppingPrimary
Pr_25_80_80_79 Sleeved mineral wool cavity barriers
Pr_25_57_06_53 Mineral wool insulation
Pr_25_57_06_56 Mineral wool slab insulation

CAWS

P12/360 Mineral wool rigid batts

H11/780 Thermal insulation

H31/254 Acoustic insulation

H30/254 Acoustic insulation

P12/40 Mineral wool rigid batts

P12/310 Boards

SKU Code

PC-FS, PC-CB

Product range

Precast and Composite Cladding

Specification data - Mineral wool fire-stopping

Classification data

Material

-

Third-party certification

IFCC2080( BS EN 1366-4:2006+A1:2010).
Intertek UK WHI-09-02-22-000001 (BS EN 13501-1).
Intertek US WHI20-32944302 (BS EN 13501-1).

Guidance for specification option:

Certifire certification has been achieved, based on proven fire performance, for horizontal applications to EN 1364-4 and horizontal and vertical applications to EN 1366-4. Certifire certificate CF 563.

Type

Semi-rigid.

Facing

Aluminium foil to both sides.

Fire performance

Reaction to fire to EN 13501-1; Class A1.
Fire resistance to BS EN 1366-4; 90 minutes integrity 30 minutes insulation.

Guidance for specification option:

BS EN 1366-4:2006+A1:2010.

Configuration

Vertical.
Horizontal.

Thickness

75 mm.

Size (length x width)

1200 mm x (void width).

Manufacturer guidance

Can be supplied in sheets of 1200 mm x 1200 mm and cut on site to suit void width. Alternatively supplied as pre-cut in widths to suit advised void size.

Insert requirements or refer to drawing.

Cavity width

To BS EN 1366-4, 20–50 mm.

Guidance for specification option:

Horizontal and vertical applications.

Compression

+10%.

Guidance for specification option:

Compression fit.

Fixing brackets

Not required.

Accessories

Not required.
Siderise RFT120/45 tape.

Weighted sound reduction index, Rw

Rw 21 (C;Ctr) (-1;-2).

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Material

Stonewool
Aluminium
Carbon dioxide equivalent

Carbon dioxide equivalent, as defined in BS EN 15804

Self-declared

Stage
Normalised unit (kg CO₂ eq/kg)
Declared unit (kg CO₂ eq/kg)
Stage:A1–A3 ('Production stage')
Normalised unit : 1.68 (kg CO₂ eq/kg)
Declared unit : 1.68

Lower emissions

Value guidance: A1-A3

1.68E+00 kg CO₂ eq/kg.

Recyclability

Recyclable

Guidance for specification option:

Stonewool core is recyclable.

Expected Life

60 year

Product certifications

IFCC

IFCC

IFCC 2080 - IFCC 3rd party certification

Literature

Siderise PC-FS Firestop & PC-CB Cavity Barrier - Technical Data

Siderise PC-FS Firestop & PC-CB Cavity Barrier - Technical Data

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