Siderise updates masonry cavity barrier and firestop range

The three new products that have been introduced are as follows:

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

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

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

The complete range is available with 30-minute, 60-minute and 120-minute fire resistance performance ratings for voids up to 40 mm. All products have been tested in accordance with the principles of the Association for Specialist Fire Protection’s Technical Guidance Document TGD 19 (the widely accepted standard for testing intumescent cavity barriers).

Indeed, Siderise is proud to have helped pioneer these types of open state cavity barriers as an effective compartmentation measure.

Intumescent strip

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 the Siderise EWI open state cavity barrier and firestops is that they’re mechanically retained using full penetration brackets with bent tails for secure ‘positive’ retention. This fixing method helps to prevent them from shifting forward and slipping off, which could otherwise obstruct ventilation and drainage in the cavity. Any obstruction would increase the risk of moisture build-up and could also result in the formation of unprotected gaps between the substrate and barrier, in turn exacerbating the fire risk.

Further, and in recognition of market demand, the 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.

*Further information is available online at www.siderise.com