Siderise EW – Cavity Barriers and Fire Stops for Masonry External Walls – Technical Data

Version: 2.01 - Release Date: October 2023

Application

Siderise EW Systems have been developed to provide a simple and easy to install method of sealing external wall cavities for fire and smoke in external masonry constructions.

The EW product range is for use as a Cavity Barrier or Firestop in accordance with the guidance supporting the national Building Regulations.

In addition to providing an effective seal against the passage of smoke and fire, the products are also acoustically absorptive.Please note, EW-FS60 is only available with a compression fit and is unsuitable for green brickwork. Care should be taken when installing under compression to ensure mortar has cured adequately to prevent deformation of the masonry outer leaf.

These products represent an ideal combination of fully qualified performance and practical installation.

Siderise EW Systems have Third-Party certification through IFCC 1830.

Product Description

Siderise EW Systems comprise of a low resin content stonewool insulation core which is pre-compressed internally to form a resilient strip. The material is faced on two sides with reinforced aluminium foil which is an effective smoke barrier. Available in the following forms:

Pre-cut Strips

Pre-cut products are available in 1mm increments of width to suit the cavity size. Please see Table 2 regarding 'fit type'.
Supplied with appropriate brackets as part of a system.

Sheets

Standard sheet size is 1200 x 1200mm and may be of benefit when the actual void size is not known or where it varies significantly.
Appropriate brackets must be ordered separately.

Siderise EW should be installed in accordance with PD6697:2019 - 'Recommendations for the design of masonry structures to BS EN 1996-1-1 and BS EN 1996-2'.

Horizontal - EW must be installed with a suitable cavity tray immediately above.
Vertical - EW must be installed with a DPC extending a minimum of 25mm into the cavity on either side. DPC to be sourced separately. If requested by Building Control / Warranty provider the DPC can be optionally secured with Siderise RFT 120/45 foil tape.

Fire Performance

Siderise EW Systems have Third-Party Certification with Intertek and are classified as A1 to EN 13501-1. Please see Table 1 for further information.

Table 1: Reaction to Fire Performance

Certificate Number	WHI-09/02-22-000001-02 (UK) WHI20-32944302 (US)
Thickness Range	50-175mm
Substrates	Mechanically fixed to gypsum or any other A1 or A2-s1,d0 substrate
Joints	With or without joints

Siderise EW Systems have been tested in accordance with EN1366-4:2006 + A1:2010. Siderise EW Systems maintained integrity (E) and insulation (I) requirements as detailed in Tables 2-3.

IFC certification (IFCC 1830) has also been achieved for horizontal and vertical applications.

Table 2:Resistance to Fire to EN1366-4 (Horizontal)

Product	Product Thickness (mm)	Product length (mm)	Fit Type	Integrity (mins)	Insulation (mins)	Gap Width (mm)	Bracket Requirement	3rd Party Approval
EW-CB30	75	1200	Gap Width +10%	120	30	20-50	None	IFCC 1830
EW-CB30	75	1200	Friction	90	30	51-150	2no.B65/110 600mm centres	IFCC 1830
EW-CB30	75	1200	Friction	90	30	151-250	2.no.B195 600mm centres	IFCC 1830
EW-CB30	75	1200	Friction	90	30	251-350	2no.B355 600mm centres	IFCC 1830
EW-FS60	90	1200	Gap Width +10%	90	60	20-50	None	IFCC 1830
EW-FS60	90	1200	Gap Width +10mm	90	60	51-150	2no.B65/110 600mm centres	IFCC 1830
EW-FS60	90	1200	Gap Width +10mm	90	60	151-240	2no.B195 600mm centres	IFCC 1830
EW-FS60	90	1200	Gap Width +10mm	90	60	241-300	2no.B355 600mm centres	IFCC 1830
EW-FS120	120	1200	Friction	120	120	20-50	None	IFCC 1830
EW-FS120	120	1200	Friction	120	120	51-150	2no.B65/110 600mm centres	IFCC 1830
EW-FS120	120	1200	Friction	120	120	151-250	2no.B195 600mm centres	IFCC 1830
EW-FS120	120	1200	Friction	120	120	251-350	2no.B355 600mm centres	IFCC 1830
EW-FS120 with MSA*(1)	120	1200	Friction	120	120	250	2no.B355 600mm centres	IFCC 1830
EW-FS120 with MSA*(2)	120	1200	Friction	120	120	250	2no.B355 600mm centres	IFCC 1830
EW-FS120 with MSA*(3)	120	1200	Friction	120	120	250	2no.B355 600mm centres	IFCC 1830

*Siderise has undertaken additional testing with EW-FS120 which includes masonry support angles (MSA) penetrating the system. For more information on these tests please refer to IFCC 1830 or contact technical.services@siderise.com

(1) In this test specimen the MSA penetrates the product and protrudes from the unexposed face by 18mm

(2) In this test specimen the MSA penetrates the product and is finished flush with the unexposed face and protrudes the exposed face by 15mm

(3) In this test specimen the MSA penetrates the product by 50% and protrudes the exposed face by 75mm

Table 3: Resistance to Fire to EN1366-4 (Vertical)

Product	Product Thickness (mm)	Product length (mm)	Fit Type	Integrity (mins)	Insulation (mins)	Gap Width (mm)	Bracket Requirement	3rd Party Approval
EW-CB30	75	1200	Gap Width +10%	120	30	20-50	None	IFCC 1830
EW-CB30	75	1200	Friction	120	30	51-150	2no.B65/110 600mm centres	IFCC 1830
EW-CB30	75	1200	Friction	120	30	151-250	2no.B195 600mm centres	IFCC 1830
EW-CB30	75	1200	Friction	120	30	251-350	2no.B355 600mm centres	IFCC 1830
EW-CB30	75	1200	Gap Width +10mm	120	30	351-450	2no.B355 600mm centres	IFCC 1830
EW-FS60	90	1200	Gap Width +10%	90	60	20-50	None	IFCC 1830
EW-FS60	90	1200	Gap Width +10mm	90	60	51-150	2no.B65/110 600mm centres	IFCC 1830
EW-FS60	90	1200	Gap Width +10mm	90	60	151-240	2no.B195 600mm centres	IFCC 1830
EW-FS60	90	1200	Gap Width +10mm	90	60	241-450	2no.B355 600mm centres	IFCC 1830
EW-FS120	120	1200	Friction	120	120	20-50	None	IFCC 1830
EW-FS120	120	1200	Friction	120	120	51-150	2no.B65/110 600mm centres	IFCC 1830
EW-FS120	120	1200	Friction	120	120	151-250	2no.B195 600mm centres	IFCC 1830
EW-FS120	120	1200	Friction	120	120	251-350	2no.B355 600mm centres	IFCC 1830
EW-FS120	120	1200	Gap Width +10mm	120	120	351-450	2no.B355 600mm centres	IFCC 1830

All brackets are to be suitably fixed to the substrate with non-combustible fixings, or mortared into masonry coursing.
All brackets to penetrate product at mid-thickness.
All brackets to penetrate to a depth of 75% of gap width.
Brackets are available in two forms: (G) denotes galvanised steel brackets and (S) denotes stainless steel brackets.
Brackets must be installed at 600mm centres based on a 1200mm strip. This can be reduced pro rata for shorter lengths. Please note that 2 brackets are required for any length of barrier greater than 250mm. For lengths ≤250mm a single bracket can be utilised.

Friction Fit - product should be sized equal to the void width and installed with no gaps.
Please note product supplied in strip form will have a -0mm/+4mm tolerance.

Compression Fit - the product should be sized to the void width plus a minimum of +10mm or 10% compression (Please see Tables 2 & 3). Care should be taken when installing under compression to ensure mortar has cured adequately to prevent deformation of the masonry outer leaf.

Please see separate installation instructions (available for download from our website) for more information.

When considering Steel Frame Systems (SFS) the supporting substrate should be capable of providing support to the barrier for the required period of fire resistance. For other void sizes or additional advice, please contact Technical Support.

Acoustic Performance

Due to the way cavity masonry facades typically interface with floor slabs it is not usual to rely on elements within the cavity to control flanking noise transfer between floors.

Flanking performance for masonry facades is typically controlled by internal finishes such as high mass plasterboard linings. Siderise EW is not designed with acoustic applications in mind, however as a stonewool product it naturally has some sound absorbing properties.

Please contact our technical department for project specific guidance relating to acoustic performance in masonry applications.

Thermal Performance

Thermal conductivity : λ = 0.038 W/m.K ±5% (tested foil to foil) to EN 12667: 2001

Damp Proofing
Siderise EW must be damp-proofed in accordance with PD6697:2019 - 'Recommendations for the design of masonry structures to BS EN 1996-1-1 and BS EN 1996-2'.

Technical Specification

Siderise EW - Cavity Barriers and Fire Stops

Table 4: Product Properties

Property	Value
Reaction to Fire	Classification to EN 13501-1 : 'A1' Please see Table 1
Resistance to Fire	30 to 120 minutes, please see Table 2 & 3
Thermal Conductivity	λ = 0.038 W/m.K ±5% (tested foil to foil) to EN 12667: 2001
Chemical	The base stone wool is chemically inert. An aqueous extract of the rock wool is neutral (pH7) or slightly alkaline. Resistant to most acids and weak alkaline solutions.
Biological	Vermin and rot proof and does not encourage the growth of fungi, moulds or bacteria.
Effect of water	Non-hygroscopic. Unaffected by humid atmosphere. Must be suitably damp proofed in accordance with codes of practice for masonry constructions.
Compatibility	Compatible with all normal building materials.
Maintenance	No maintenance required unless disturbed.
Handling	Easy to handle but should be treated with due care to ensure material integrity and shape are maintained.
Storage	Store in dry conditions and protect from mechanical damage

Siderise offers a range of ancillary products to complement the EW range these include:

Fixing Brackets must be used in the installation of the product.

Brackets come in two forms: 'G' - Galvanised Steel Brackets and 'S' - Stainless Steel Brackets.

Brackets are supplied with all EW in strip form, but must be ordered separately for all EW in sheet form.

Aluminium Jointing Tape must be used at all joints and intersections:

RFT120/45 (120mm wide x 45m rolls)
Adhesive backed
Supplied in boxes of 8

Environmental

Stonewool core is recyclable.

Additional Information

The following information is available for download via the website:

Third-Party Certification - IFCC 1830
Standard Details
NBS Specification Clauses
Installation Instructions
Safety Data Sheet

Technical Support

For technical advice or support please contact: technical.services@siderise.com

For Installation Training or Site Inspections please contact: site.services@siderise.com

Context

The information in this datasheet is believed to be accurate at the date of publication. Siderise has a policy of continuous product improvement and reserves the right to alter or amend the specifications of products without prior notice. Siderise does not accept responsibility for the consequences of using the products described outside of the recommendations within this datasheet. Expert advice should be sought where there is any doubt about the correct specification or installation of Siderise products.

Published Version: EW _v2_01_20231030_174