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EWI SYSTEM HOLDERS Non-combustible thermal insulation

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What is ROCKWOOL? Put simply, ROCKWOOL is made from rock. Our manufacturing process recreates the inside of an active volcano, using a cupola furnace to melt volcanic basalt rock at temperatures of up to 1,500°C. The liquid rock is channelled into a chamber where it is spun into strands. These strands are collected, then mixed with a small amount of binder and water-repelling agent to form stone wool insulation products. EWI SYSTEM HOLDERS Advantages Non-combustible • ROCKWOOL stone wool achieves the highest 'A1 -Non-combustible' rating under the European Reaction to Fire Classification...

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External Wall Dual Density Slabs Product description External Wall Dual Density Slab is a stone wool insulation specifically developed for use in external wall insulation systems. Made using a ROCKWOOL-patented 'dual density' manufacturing process, the top layer of each slab has a distinctly higher density than the remainder of the product. This provides a robust outer surface for applying render and accepting fixings, while the resilient underside can accommodate unevenness in the substrate. To aid installation the top layer is branded with 'THIS SIDE UP', allowing for quick and easy...

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External Wall HD Slab Product description External Wall HD Slab is a stone wool insulation specifically developed for use in external wall insulation systems where a higher density slab required. Length Width Thickness Performance Fire Euroclass A1 - non-combustible Thermal Thermal conductivity 0.038 W/mK (30 - 40mm) / 0.039 W/mK (> 40mm) Strength Tensile strength perpendicular to faces > 15 kPa Compressive > 10 kPa

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Double Layering Insulation thicknesses greater than 250mm can be achieved by installing slabs in two layers. Where possible both layers should be of the same thickness, e.g. 2 x 150mm to meet 300mm – otherwise, for ease of identification on site, two visually dissimilar thicknesses should be chosen. Fixing instructions Installation is started from the left side of the façade at base track level. When using two different slab thicknesses, the thinner of the two is installed first. To avoid thermal bridging the slabs are installed in a brick bond pattern. First layer The first slab to be...

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Packaging The product is supplied on pallets. For full details of packaging specifications and minimum order quantities, please see the EWI System Holder’s Ordering Guide Handling & Storage Slabs should be stored indoors or under waterproof covering. Quality Assurance ROCKWOOL operates a Quality Management System which complies with the requirements of BS EN ISO 9001:2008 and is registered by BSI-QA under Certificate No. FM 02262.

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Fire resistance Acoustic comfort Sustainable materials Durability As an environmentally conscious company, ROCKWOOL promotes the sustainable production and use of insulation and is committed to a continuous process of environmental improvement. All ROCKWOOL products provide outstanding thermal protection as well as four added benefits: Health & Safety The safety of ROCKWOOL stone wool is confirmed by current UK and Republic of Ireland health & safety regulations and EU directive 97/69/EC:ROCKWOOL fibres are not classified as a possible human carcinogen. A Material Safety Data Sheet is...

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