Siderise RF Cavity Barrier and Firestop for Raised Access Floors

Siderise RF Cavity Barrier & Firestop Systems prevent the spread of fire and smoke, and reduce sound transmission, by sealing the voids between raised access floors and floor slabs. 

The range includes options to either subdivide large uninterrupted cavities (Cavity Barriers) or to provide continuity of fire resistance when aligned underneath partitions (Fire Stops). Across the range, these simple to install systems have been tested for fire performance, acoustic performance and for use as a plenum liner.

Siderise RF-CB Cavity Barrier systems are used to subdivide uninterrupted voids in accordance with Building Regulations and offer 30 minutes fire resistance. CB barriers are designed to suit individual floor void depths between 50mm and 600mm (see Table 2 for ratings by void size).

Siderise RF-FS Firestop systems maintain continuity of fire resistance for installations aligned with fire rated partitions hence maintaining compartmentation. The 'FS' systems offer 60 to 120 minutes fire resistance.

RF-FS barriers are designed to suit individual floor void depths between 50mm and 1000mm. They have been designed as a one-piece system and afford easy cutting and installation. Additionally, due to a unique manufacturing process, the products also offer unique vertical compression to allow tightness of fit.

Siderise RF Cavity Barrier & Firestop Systems have been tested in general accordance with EN1366-4. Please refer to Table 2 for details.

Siderise RF Cavity Barrier & Firestop Systems are classified A1 to EN 13501-1 and comprise a unique non-combustible stone wool lamella core, which is faced on two sides with an impervious aluminium foil, offering excellent resistance to the passage of smoke.
 

Siderise RF is 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 1 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.

In terms of 'Reaction to Fire', the products are classified  'A1' to EN 13501-1. See Table 1.

Siderise RF cavity barrier and fire stop systems have been successfully tested to EN 1366-4 for up to 120 minutes fire resistance (integrity and insulation). See Table 2.

NOTE  - To facilitate the required compression, raised access floor panels will require mechanical fixing to the floor pedestals. This is to ensure that the panels are correctly seated onto the pedestals whilst providing the required compression to the RF. 

** Whilst RF-FS60 has been tested in general accordance with EN 1366-4 in void widths 50-200mm without mechanical fixings and brackets, we note that some supervising authorities may require a form of mechanical fixing. We recommend engaging with the project supervising authorities prior to installation to ensure all their requirements are met.

• Brackets must be installed at 600mm centres based on a 1200mm strip, except for between 601-1000mm voids which should be installed at 300mm centres. This can be reduced pro rata for shorter lengths. Please note that a minimum of 2 brackets are required for any length of barrier greater than 250mm. For lengths ≤250mm a single bracket must be utilised.
• All brackets to be suitably fixed to substrate with non-combustible fixings
• All brackets to penetrate product at mid-thickness.
• All brackets to penetrate to a depth of 75% of gap width. For RF-FS60-X used in voids of 601-1000mm, brackets should penetrate 355mm. 
• Please refer to the installation instructions for further details.

Joint Type

• Butt Joint (RF-CB-BJ and RF-FS-BJ) available as standard.
• Rebate Joint (RF-CB-RJ and RF-FS-RJ) available on request. For rebate joints cover length is 1175mm.
• Please advise joint style at time of ordering.

The installation of Siderise RF cavity barrier and fire stop systems can enhance the ‘room-to room’ sound reduction of raised access floors which form a continuous common void under adjacent areas. This can result in improved speech privacy and greater control of disturbance from intrusive noise.

The acoustic performance of the RF material is due to the unique internal construction of the stone wool lamella core. The product’s foil facings and the additional sealing of the vertical joints with foil tape all serve to provide improved air tightness. 

The product’s standalone acoustic performance is tested in accordance with BS EN ISO 140-3:1995. Weighted sound reduction index (dB Rw) values for various grades of the product are given below in Table 3.

The acoustic flanking performance of a raised access floor (given as a dB Dn,f,w value) will be affected by both the floor tiles themselves and any cavity barriers which may be installed in the void. The below values represent the performance of Siderise RF barriers only. 

Thermal conductivity : λ = 0.038 W/m.K (tested foil to foil)

Siderise RF Cavity Barrier and Fire Stop systems

The stone wool core is recyclable.

The following information is available upon request or via download from the website: 

• NBS Specification Clause 
• Installation Instructions
• Safety Data Sheet 

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

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

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.