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Siderise RH Ventilated Cavity Barrier - Cavity Barrier

Verified by manufacturer 2 months ago

RH25-90/30

Siderise Group Variant:
Third party certifications:
  • IFCC

    IFCC

    Certificate type

  • QA Certificate

    QA Certificate

    Certificate type

Siderise RH Cavity Barriers for horizontal application cladding/ rainscreen systems, ensure the system drains freely, while maintaining airflow and providing an effective hot smoke and fire seal.

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Application

Application

Siderise RH ‘Open State’ horizontal cavity barriers have been specifically developed to meet the requirements for cavity barriers used in drained and ventilated façades. Their use ensures that the system will drain any moisture within the façade construction whilst maintaining airflow and, in the event of fire, provide an effective hot smoke and fire seal.

Siderise has developed two ‘Open State’ (open void) horizontal solutions: RH25 for air gaps up to 25mm and RH50 for air gaps up to 50mm.

The product range is compliant with current market requirements and has been tested to ASFP Guidance: ’Open State’ Cavity Barrier used in External Envelope or Fabric of Buildings, utilising principles of EN 1363-1. ASFP Technical Guidance Document –TGD 19 (July 2014 revised Nov 2017) refers.

Third Party Certification 

Siderise was the first manufacturer to achieve Third-Party Certification for Rainscreen Cavity Barriers. 

For current details of Siderise certified 'Open State' Cavity Barriers, including the testing and scope of our Third-Party Certification, please refer to IFC Certification IFCC 1712. 

This Certificate is available from our online Technical Resources or by contacting our Technical Support department: technical.services@siderise.com

Description

Siderise RH ‘Open State’ horizontal Cavity Barriers consist of a non-combustible stonewool lamella core, with reinforced aluminium foil faces. This primary seal has a reaction to fire performance to Class 'A1'. The exposed leading edge is also sealed with aluminium foil. Whilst the base material is water repellent and non-hygroscopic, this predominantly enclosed arrangement affords an added degree of weather protection to the core material.

Siderise RH ‘Open State’ horizontal cavity barriers incorporate a continuous high performance reactive intumescent strip which is bonded to the leading edge. The intumescent material has a reaction to fire performance to Class 'E'. In the event of exposure to fire, the intumescent rapidly expands and fully seals the purposely designed ventilation gap formed at the time of installation, between the barrier and the rear of the cladding.

As standard, the range includes a choice of products to suit either 25mm air gaps - referred to as RH25 - or 50mm air gaps - referred to as RH50. Both options are available with either galvanised mild steel (G) or stainless steel (S) fixing brackets as part of the system. 

The specific horizontal cavity barrier system is then referred to as either RH25G, RH25S, RH50G or RH50S accordingly. The choice of brackets is usually determined by the rainscreen system designer according to project exposure and/or location.

The leading edge of the horizontal cavity barriers is encapsulated in a weather-resistant polymer film. As standard, the film is black to register as a ‘shadow-line’ behind open joints in the cladding.

For product identification purposes, the top edges of the film used on the RH25 and RH50 cavity barriers are colour-coded and labelled to show the product fire performance rating.


Features and benefits:

  • RH 'Open State' Cavity Barriers are IFC Certified (IFCC 1712)
  • RH 'Open State' Cavity Barriers allow continuous ventilation and drainage behind the rainscreen envelope
  • RH 'Open State' Cavity Barriers are tested to ASFP TGD19 ‘Fire Resistance Test of Open State Cavity Barriers’ utilizing BS EN 1363-1 and Principles of BS EN 1366-4
  • RH 'Open State' Cavity Barrier - (RH25-120/90). provides up to 120 minutes' fire integrity and 90 minutes insulation.
  • Suitable for horizontal (open void) applications
  • All RH 'Open State' horizontal cavity barriers are colour-coded for ease of identification.


Fire Performance

Siderise ’Open State’ horizontal cavity barriers have been tested in accordance with ASFP TGD19 (prEN 1364-6): ’Open State’ Cavity Barrier used in External Envelope or Fabric of Buildings. This test method specifies a procedure for determining the fire resistance of ’open state’ cavity barriers when subjected to the standard fire exposure conditions and performance criteria stipulated in EN 1363 Part 1: 2012.

The tests have been undertaken to assess the ability of the horizontal ’open state’ cavity barrier products to reinstate the fire resistance of a pre-cast, aerated concrete supporting construction. This is the standard assembly for testing such cavity barrier products as it allows the performance of the individual barrier to be classified.

We advise that all ‘RH’ Open State Cavity Barriers are positioned either flush or projecting in front of the thermal insulation.


Product Fire Performance

Siderise RH25 ’Open State’ horizontal cavity barrier for maximum 25mm air gaps

Siderise have tested horizontal cavity barriers with a 25mm air gap to the ASFP TGD19 method. During the fire tests, the seals achieved full effective closure in under 5 minutes. Seal temperatures remained below a 180°C rise during this activation period and maintained the EI requirements for up to E 120 and I 90. See manufacturers Technical Data Sheet for details. 


Siderise RH50 ’Open State’ horizontal cavity barrier for maximum 50mm air gaps

Siderise have tested horizontal cavity barriers with a 50mm air gap to the ASFP TGD19 method. During the fire tests, the seals achieved full effective closure in under 5 minutes. Seal temperatures remained below a 180°C rise during this activation period and maintained the EI requirements as detailed in Table 1 for up to E 60 and I 60. See manufacturers Technical Data Sheet for details. 


System Fire Performance

Siderise cavity barrier products have been used in a number of large-scale system tests such as BS 8414 (1&2) and NFPA 285. These may be used to evaluate the performance of the Siderise cavity barriers within a complete cladding system. The rules for the evaluation of results from BS 8414 are subsequently defined in BS 9414.

For information regarding performance and assembly details in system tests please see our website


Please read the below in conjunction with the manufacturers Technical Data Sheet.


Brackets

  • Brackets are available in two forms: (G) denotes galvanised steel brackets and (S) denotes stainless steel brackets.
  • Brackets must be installed at 400mm centres based on a 1200mm strip. For lengths ≤800mm 2no brackets must be used, with spacing reduced pro-rata. Lengths <100mm should be avoided by cutting down the adjacent barrier accordingly.
  • All brackets are to be suitably fixed to the substrate with non-combustible fixings.
  • All brackets to penetrate product at mid-thickness.
  • Please refer to separate installation instructions and the manufacturers' technical datasheet.


Screw fixings:

  • Screw fixings must be installed at 400mm centres based on a 1200mm strip. For lengths ≤800mm 2no screw fixings must be used, with spacing reduced pro-rata. Lengths <100mm should be avoided by cutting down the adjacent barrier accordingly.
  • All barriers to be suitably fixed to substrate with non-combustible fixings and washers with a 15mm (max.) head diameter.
  • All screw fixings to penetrate product at mid-thickness.
  • Please refer to separate installation instructions and the manufacturers' technical datasheet.

General information

Color

-

Manufacturer guidance

Please see 'Identifying strip colour'

Finish

Foil

Guidance for specification option:

Aluminium foil tape to top and bottom surfaces.

Material

Stonewool

Aluminium

Guidance for specification option:

Foil.

Intumescent

Stone wool

Rock fibre mineral wool

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Shape

Rectangle

Other

Length

1200 mm

Width

Bespoke

Height

-

Manufacturer guidance

Please see Thickness

Uniclass

Pr_25_80_80_44 Intumescent sleeved mineral wool cavity fire barriersPrimary
Pr_25_80_80_79 Sleeved mineral wool cavity barriers

CAWS

H92/776 Thermal insulation

P12/360 Mineral wool rigid batts

P12/40 Mineral wool rigid batts

Product range

Rainscreen

Specification data - Intumescent sleeved mineral wool cavity fire barriers

Standard

Tested in accordance with ASFP Technical Guidance Document TDG19.

Third-party certification

IFC Certification IFCC 1712.

Fire performance

To EN 13501-1, Class A1; To EN 13501-1, Class E.

Guidance for specification option:

Class A1: The primary stonewool seal.


Class E: The reactive intumescent along the leading edge. This is permitted by Regulation 7(3)(f) - Approved Document B for England and Wales.

Material

Non-combustible stonewool lamella core, with reinforced aluminium foil faces.

Thickness

75 mm.

Cavity width

26–425 mm.

Air gap

25 mm.

ThermalConductivity

0.038 W/m·K.

Fixing brackets

RS 350 (G).

Guidance for specification option:

Galvanized steel.

Void widths 76–250 mm.

RS 350 (S).

Guidance for specification option:

Stainless steel.

Void widths 76–250 mm.

RS 450 (G).

Guidance for specification option:

Galvanized steel.

Void widths 251–350 mm.

RS 450 (S).

Guidance for specification option:

Stainless steel.

Void widths 251–350 mm.

RS 550 (G).

Guidance for specification option:

Galvanized steel.

Void widths 351–425 mm.

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Fire resistance

To ASFP TGD19, integrity E 90; insulation I 30.

Colour

Identifying strip colour - green.

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Recyclability

Recyclable

Guidance for specification option:

The stonewool core is recyclable


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Platform Compatible Version
IFC
-

5

Revit
-

5

Third party certifications

IFCC

IFCC

Siderise RH,RV Cavity Barriers- IFCC 1712 Certificate

QA Certificate

QA Certificate

Intertek UK: WHI-09-02-22-000001-02

QA Certificate

QA Certificate

Intertek US: WHI20-32944302 Iss. 7

Literature

Siderise RH | Cavity Barriers for Ventilated Cladding / Rainscreen – Horizontal  – Technical Data

Siderise RH | Cavity Barriers for Ventilated Cladding / Rainscreen – Horizontal – Technical Data

Siderise RH & RV Product Brochure

Siderise RH & RV Product Brochure

Cavity Barriers for Rainscreen v4.23

Cavity Barriers for Rainscreen v4.23

Case studies

ONE Tower, Limassol

ONE Tower, Limassol

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