Rockwool RWA45 Accoustic Insulation Slab

Rockwool RWA45 Acoustic Insulation Slab

The Rockwool RWA45 Acoustic Insulation Slab is a high-quality, versatile stone wool insulation designed to deliver exceptional thermal, acoustic, and fire performance. Manufactured from robust mineral wool, it is suitable for a wide range of general building applications, providing long-lasting protection and comfort in residential, commercial, and industrial projects.

Key Features

• Density: 45kg/m³ for reliable acoustic and thermal performance
• Excellent sound absorption for improved indoor comfort
• Non-combustible with Euroclass A1 fire rating – highest level of fire safety
• Thermal conductivity: as low as 0.035 W/m·K
• Water-repellent yet breathable to help prevent condensation
• Durable, dimensionally stable, and easy to cut and install
• Available in a wide range of thicknesses

Applications

• Partition walls and separating walls
• Floors and ceilings for acoustic control
• Pitched roofs and loft spaces
• General building projects requiring fire-resistant insulation

Benefits

The Rockwool RWA45 Slab is a proven solution for thermal efficiency, soundproofing, and fire protection in one product. Its stone wool composition ensures durability, sustainability, and long-term performance, making it a trusted choice for contractors and builders aiming to meet modern building regulations with ease.

At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

• Competitive prices on leading brands and quality products.
• Nationwide delivery across the UK
  
• A constantly expanding range of building and landscaping materials.
  
• Friendly, knowledgeable customer support.
  
• A trusted business backed by the JJ Roofing Supplies Group.
  

Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.

Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.