New Marmox Fireboard offers ideal EWI and IWI substrate

Building on the broad benefits of its widely specified Multiboard, insulation manufacturer Marmox has introduced the highly versatile Fireboard into its range for both internal and external wall insulation (IWI/EWI) applications.

The Marmox Stone Wool based product shares the unique Marmox honeycomb surface structure with its XPS forerunner, Multiboard, to create an A1 non-combustible certified render-backer which is fully waterproof. It can further be used internally across walls or ceilings to take a plaster finish, while providing sound decoupling and acoustic absorption properties, as well as thermal insulation. The 600 x 1200mm Fireboards are available in thicknesses from 20mm up to 200 mm and with the polymer modified mortar honeycomb coating on one or both faces. With a nominal density of 150 kg/m³ the boards’ core material offers a compressive strength of 90 kN/m², making it three times stronger than standard mineral wool.

The Marketing Manager for Marmox, Grant Terry, commented:

“The introduction of Fireboard into our range significantly enhances our offer to the construction industry, meaning we have an A1 non-combustible backer board for internal or external use, which can safely be used across masonry as well as timber or steel framing systems. The Stone Wool the boards are made of is formed of molten rock, meaning it is impossible for the fibres to absorb moisture, so they will not degrade no matter what weather they are exposed to. The thermal conductivity of 0.047 W/mK delivers very good thermal insulation while the tiny air pockets within the micro-fibre structure of the Stone Wool serves to interrupt the pathway for sound transmission, which solid materials facilitate. We expect Fireboard to find applications in new-build and refurbishment work within residential, commercial and other sectors, while it is also suitable for built-up roofing and parapet wall construction.”

The range has been tested to prove compliance with BS EN 1350-1 along with other testing completed by the BRE.

A two-page technical data sheet is available covering all of the key benefits and certifications for Marmox Fireboard while the manufacturer is able to offer specification or project specific advice.

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