The stone wool composition of the Siderise EW cavity barriers means they can be readily notched to accommodate penetrations such as masonry support brackets.
Provided the barriers form a tight seal around the brackets profiles, there should be no adverse affect on fire resistance in terms of integrity and only a minimal affect on the fire resistance in terms of insulation, but this will of course depend on the exact arrangement.
We would be happy to review any site-specific arrangements and offer advice based upon any relevant test data that we hold.
SIDERISE are strong advocates of large-scale system testing and have participated in a significant number of such tests (including BS 8414, NFPA 285). This has provided considerable data which is invaluable in determining the performance of our cavity barriers.
Please see the systems test page for further information.
As the market leader in passive fire protection products, Siderise are also able to offer a wide range of Third Party Certified products.
These Third Party Certificates provide details of product testing and performance.
Siderise CW range - Perimeter barriers and fire stops for curtain walling
Siderise RH - Cavity barriers for Ventilated Cladding/Rainscreen - Horizontal
Siderise RV - Cavity barriers for Ventilated Cladding/Rainscreen - Vertical
Siderise EW - Cavity barriers & fire stops for masonry external walls
Siderise LGS - Linear Gap Seal
Siderise RF - Cavity barriers and firestops for raised access floors
Reaction to fire
National Class: Historically products were tested to BS 476-6 and 7 and then classified as Class 0, Class 1 etc dependant on their performance.
Reaction to fire national classes have now been removed from Approved Document B for England & Wales (2019 edition).
European Class: Products should now be classified to European Class A1, A2 etc. under EN 13501-1.
Resistance to fire
National Class: BS 476-20 is a furnace test to prove fire resistance performance in terms of integrity (E) and insulation (I) in minutes.
For example, a product may achieve 120 minutes integrity and 90 minutes insulation.
European Class: Products should be tested to the relevant EN standard such as EN 1364-4 or EN 1366-4. The fire resistance in terms of integrity and insulation is then classified to EN 13501-2.
For example, a product may achieve 120 minutes integrity (E 120) and 90 minutes insulation (I 90), this would receive a classification of EI 90.
Approved Document B for England & Wales (2019 edition) now lists classification to EN 13501-2 as the primary route to compliance. BS 476-20 is listed as an alternate route to compliance.