Siderise Updates Its Masonry Cavity Barrier And Firestop Range With Pioneering Open State Solutions

Siderise has launched three new Masonry open state cavity barrier products for 25 and 50mm air-gaps. The fire resistance performance of the three new additions is IFC certified (IFCC), alongside the existing Siderise EWI Open State Cavity Barrier and Firestops, offering peace of mind that they are suitably tested and independently audited.

 The three new products that have been introduced are:

• EW25-FS60 with a 1-hour fire resistance (E 60 I 60) for air gaps up to 25mm. 

• EW50-CB30 with a 30-minute fire resistance (E 30 I 30) for air gaps up to 50mm. 

• EW50-FS60 with a 1-hour fire resistance (E 60 I 60) for air gaps up to 50mm. 

  
  

The complete range is available with 30-, 60- and 120-minute fire resistance performance ratings for voids up to 400mm and all products have been tested in accordance with the principles of the ASFP Technical Guidance Document TGD 19— the widely accepted standard for testing intumescent cavity barriers. Siderise are proud to have helped pioneer these types of open state cavity barriers as an effective compartmentation measure.

 Siderise open state cavity barrier products feature an integral heat activated intumescent strip that rapidly expands in the event of a fire to seal the cavity, which is particularly beneficial for overcoming the compartmentation challenges presented by inconsistent cavity widths that result from uneven, decorative or stepped brickwork.

 Another distinctive feature of Siderise EWI Open State Cavity Barrier and Firestops is that they are mechanically retained using full penetration brackets with bent tails for secure ‘positive’ retention. This fixing method helps prevent them from shifting forward and slipping off, which could otherwise obstruct ventilation and drainage in the cavity increasing the risk of moisture build-up, and could also result in the formation of unprotected gaps between the substrate and barrier exacerbating fire risk. Furthermore, in recognition of market demand, EWI products can potentially reduce the volume of cavity trays needed.

The Siderise EWI Open State Cavity Barrier and Firestop range is part of a complete suite of engineered Masonry passive fire protection and moisture management solutions for masonry external wall applications. www.siderise.com