ROCKWOOL RW3 has been developed for thermal, acoustic and fire performance in a range of construction types. RW3 is made up of high-quality resin bonded slabs in a variety of thicknesses and densities. Specialist facings are available to order to meet the specifications of unique projects. RW3 is rated Euroclass A1 non-combustible, providing the highest level of fire performance. Using RW3 in ceilings, walls and floors can help to compartmentalise rooms, reducing fire spread and damage. RW3 insulation slabs achieve Lambda 0.034 W/mK and are available in eight standard thicknesses from 25-100mm, with a density of 60 kg/m3. Technical Specification Material Type: Rock Mineral Thickness: 75mm Width: 600mm Length: 1200mm Pieces Per Pack: 6 Packs Per Pallet: 12 Sales Unit: Pack Sales Unit Coverage: 4.32m2 Brand: Rockwool Manufacturer's Reference: 181185 Thermal Conductivity: 0.034W/mK Density: 60kg/m3 Fire Rating: A1 Non-Combustible

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75mm Rockwool RWA45 Acoustic Sound Insulation Slab is a multi-purpose acoustic insulation solution that can be installed in a wide variety of building projects and applications. It has been designated as A1-non-combustible under BS EN 13501-1, giving it the highest fire rating possible. 75mm Rockwool RWA45 slabs have a density of 45kg/m3, making them ideal for use in walls and separating floors. These 75mm Rockwool insulation slabs have been resin bonded and are cut to 1200mm x 600mm, which means they fit well between standard floor joists and stud wall partitions. Also known as Sound slabs due to their well-renowned acoustic properties, these 75mm RWA45 slabs are the most common acoustic insulation solution on the market. Technical Specification Material Type: Rock Mineral Thickness: 75mm Width: 600mm Length: 1200mm Pieces Per Pack: 6 Packs Per Pallet: 20 Sales Unit: Pack Sales Unit Coverage: 4.32m2 Brand: Rockwool Manufacturer's Reference: 209290 Thermal Conductivity: 0.035W/mK Density: 45kg/m3 Fire Rating: A1 Non-Combustible

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75mm Rockwool RWA45 Acoustic Sound Insulation Slab is a multi-purpose acoustic insulation solution that can be installed in a wide variety of building projects and applications. It has been designated as A1-non-combustible under BS EN 13501-1, giving it the highest fire rating possible. 75mm Rockwool RWA45 slabs have a density of 45kg/m3, making them ideal for use in walls and separating floors. These 75mm Rockwool insulation slabs have been resin bonded and are cut to 1200mm x 600mm, which means they fit well between standard floor joists and stud wall partitions. Also known as Sound slabs due to their well-renowned acoustic properties, these 75mm RWA45 slabs are the most common acoustic insulation solution on the market. Technical Specification Material Type: Rock Mineral Thickness: 75mm Width: 600mm Length: 1200mm Pieces Per Pack: 6 Packs Per Pallet: 20 Sales Unit: Pack Sales Unit Coverage: 4.32m2 Brand: Rockwool Manufacturer's Reference: 209290 Thermal Conductivity: 0.035W/mK Density: 45kg/m3 Fire Rating: A1 Non-Combustible

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Rockwool Ablative Coated Batt measuring 50mm thick and 1200mm × 600mm in size. High-density stone-wool fire-stopping slab factory-coated on both faces with a water-based ablative sealant. Designed to reinstate fire resistance and acoustic integrity of walls and floors where services penetrate compartment lines. The combination of non-combustible mineral wool core and ablative coating provides up to two hours’ fire resistance when installed as part of a tested system. The coating prevents the passage of smoke and flames, while the slab maintains insulation and dimensional stability under fire exposure. Lightweight yet rigid, the batt can be easily cut to shape for complex service penetrations, offering a clean, durable finish once installed. The 50mm thickness is suited to single-layer applications and narrow or moderate-thickness wall constructions.

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Rockwool Acoustic Intumescent Sealant supplied in 310ml cartridges. High-performance, water-based acrylic sealant formulated for sealing linear joints and service penetrations within fire-rated wall and floor constructions.  Designed specifically for use with Rockwool Ablative Coated Batt, the sealant reinstates fire resistance, acoustic integrity, and air tightness where building services or joints interrupt compartment lines. The intumescent formulation expands under fire conditions to close small gaps and restrict the passage of flames, smoke, and gases. Once cured, it forms a flexible, durable seal capable of accommodating building movement without cracking or loss of adhesion. Tested to provide up to four hours’ fire resistance, the sealant also delivers verified acoustic and air leakage performance, making it suitable for both fire protection and sound control applications across multiple substrates.

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Rockwool High Expansion Intumescent Sealant supplied in 310ml cartridges. Water-based acrylic emulsion sealant containing graphite, designed to reinstate fire resistance and insulation performance in compartment walls and floors where they are penetrated by building services.  The sealant expands under heat to seal voids left by combustible materials, preventing the passage of flames, smoke, and hot gases during fire conditions. Formulated for use with both combustible and non-combustible services, the sealant provides a reliable, high-expansion barrier for pipes, cables, and insulated metalwork. It reacts at approximately 135°C, rapidly increasing in volume to close openings and restore fire integrity. Supplied in easy-to-apply 310ml cartridges, it is suitable for both horizontal and vertical applications, ensuring consistent performance across tested wall and floor constructions.

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