Siderise IC-FS Firestop and IC-CB Cavity Barrier offers a solution for firestopping in industrial portal framing buildings as per the requirement in section 7.3 of Approved Document B which mandates that firestopping is provided at compartment walls or close to a site boundary to prevent fire spread to adjacent properties.

The primary function of IC-FS and IC-CB is to provide compartmentation from the internal compartment floor or wall of a portal frame building to the outer façade. IC-FS and IC-CB has been tested in both horizontal and vertical orientations.

Siderise IC-FS and IC-CB lamella construction also provides the ability to accommodate movement for the expected service lifespan of the product of 60 years. Siderise’s Lamella features a special formulation of stone wool insulation with vertically oriented fibres, instead of a horizontal fibre structure.

These vertical fibres are laterally compressed under quality-controlled factory conditions to assist with uniform density and remove any gaps between the adjoining cut sections, which may otherwise result in weakness. This ‘pre- compression’ is held in place by carrier facings (typically foil), which are heat applied to the cut faces of the fibres.

The result of these pre-compressed vertical stone wool fibres that sit perpendicular to the substrate in application is manifold in terms of performance characteristics. This includes a durable and resilient one-piece, dry-fit fire barrier solution; a tight fit; the ability to withstand building and façade movement; mitigating the risk of cladding panels bulging after panel installation; eliminating the need for a secondary wet seal; and facilitating a quick and simple installation process with straightforward compression in voids alongside our friction fit product ranges.

Siderise IC-FS and IC-CB 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.

Throughout the range, the materials comprise a one-piece product with a pre-compressed non-combustible stone wool core. The products also have integral aluminium foil facings to provide an overall Class A1 rating (to BS EN 13501- 1:2018 “Fire classification of construction products and building elements.”).

IC-FS is offered with a 1- or 2-hour fire resistance, with the IC-CB offering 30-minute fire resistance, and can accommodate void widths up to 400 mm. In addition to providing an effective seal against the passage of fire, the products are also acoustically absorptive.

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 1 mm increments of width to suit the cavity size to provide a tight compressive fit within the void - Please see Table 2 of technical datasheet regarding fit type. Each pre-cut IC-FS and IC-CB unit is supplied with appropriate fixing brackets as part of the system.

The standard fixing brackets are supplied in galvanized mild steel in a flat form for folding on-site. Brackets are also available in stainless steel. All hole positions are to be drilled to suit the varying site conditions. Different size brackets are available according to the cavity size – see Table 1 of technical datasheet. All fixing brackets are to be mechanically secured to the substructure with suitable non-combustible fixings.

Features and benefits:

• Comprehensively tested: IC-FS and IC-CB Cavity Barrier have been tested to BS EN 1366-4: 2006+A1: 2010 to determine performance when used in both a vertical and horizontal orientation between two fixed elements.
• Fire resistance: IC-FS60 and IC-FS120 are certified to deliver 1 and 2 hours fire resistance, respectively. IC-CB30 is certified to deliver 30 minutes of fire resistance.
• 60 year design life: To confirm in-application durability and robustness in its ability to maintain its form and performance when exposed to specific use conditions, IC-FS Firestop has 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.
• Void width: 20–400 mm.
• Compression (minimum): +10%.