Lamatherm fire barriers provide a simple, effective fire break barrier between floors, that sits behind the rainscreen cladding and stops the spread of fire in the airflow cavity behind the cladding. Lamatherm is manufactured by Siderise, who have been developing bespoke fire, thermal and acoustic insulation solutions for over 40 years.
The Lamatherm fire barrier allows for continuous ventilation and drainage behind the cladding while providing a hot smoke and fire seal when triggered. The Lamatherm fire barrier allows for continuous ventilation and drainage behind the cladding while providing a hot smoke and fire seal when triggered. Both Lamatherm products are composed of a non-combustible rock mineral wool lamella core material, reinforced on two faces with a class O rated aluminium foil. This construction offers an excellent resistance to the passage of both smoke and fire. Lamatherm CW-RS system includes products for both horizontal (CW-RSH) and vertical (CW-RSV) solutions.
Lamatherm has been tested and approved by Warrington Fire Research Centre (WFRC) and each barrier provides up to 60 minutes fire integrity and insulation. The horizontal CW-RSH cavity fire barrier has an integral intumescent edge strip which fully seals the designed ventilation gap formed at the time of installation between barrier and the rear of the cladding.
Lamatherm barriers are secured within the cavity with dedicated metal support brackets, and are suitable for use in cavities widths up to 425mm wide and is able to close a 25mm gap under fire conditions in just 12 seconds. This fire cavity barrier is economical and easy to install. Lamatherm is supplied in 1200mm long strips and can be pre-cut in width to suit advised void size.
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