50mm Rockwool RWA45 Acoustic Sound Insulation Slab (6.48m2/Pack)

Why RWA45? 

• High-performance mineral wool insulation slab offering excellent acoustic, thermal, and fire-resistant properties.
• Tightly packed, porous fibres absorb sound, reducing noise transfer.
• Ideal for reducing airborne noise in walls, floors, and partitions in residential, commercial, and industrial buildings.
• Open-cell structure traps air, reducing heat transfer and maintaining consistent indoor temperatures, enhancing energy efficiency.
• Non-combustible with a Euroclass A1 fire rating - resists flames, slows fire spread, and improves fire safety.

Why 50mm? 

• 50mm is the minimum recommended thickness for wall applications, ensuring compliance with building regulations.
• A practical and cost-effective solution for internal walls and partitions where high sound reduction and thermal efficiency are important but where space constraints apply. 
• In lightweight metal stud partition walls, RWA45 50mm helps achieve sound reduction levels of up to Rw 50dB, meeting the requirements of building regulations for internal wall partitions. 
• To achieve a 50dB reduction, Rockwool's RW installation guide advises using 70mm metal partition studs and two layers of 12.5mm gypsum boards on each side of the wall.
• This thickness is commonly used in office spaces, schools, and residential projects.

Rockwool 

• Rockwool’s commitment to excellence and performance is evident in its wide range of mineral wool insulation solutions. 
• These products enable contractors, architects, and building professionals to create structures that deliver superior thermal, acoustic, and fire performance, all while meeting stringent industry regulations and sustainability standards.

Applications

• Interior timber or steel partition walls
• Interior timber frame floors
• Interior timber frame ceilings
• Acoustic ceilings and partition panels
• I-joist interior partitions
• Pitched roofs
• Party walls
• Industrial applications

Benefits

• Zero Ozone Depleting Potential (ODP) and Global Warming Potential (GWP).
• Rot-resistant - withstands mould and mildew.
• Thermal conductivity of 0.035 W/mK.
• Fire Classification (Reaction To Fire) - Euroclass A1 (BS EN 13501-1).
• Hydrophobic - reliable water-repellent properties.
• Excellent acoustic, fire and thermal performance.

Certifications

• A1 non-combustible in accordance with BS EN 13501-1 - achieving the highest possible level of fire performance/resists high temperatures
• CE and Key marked in accordance with BS EN 13162:2012 + A1:2015.v

The slabs are also certified by Lloyd's register of shipping as non-combustible materials for use on:

• Fixed offshore installations
• MED classed ships- DTLR MCA approval
• Rated non-combustible in accordance with ISO 1182 and IMO A. 799

Storage & Handling

• Store slabs indoors, in a dry and well-ventilated area, to prevent moisture absorption.
• Keep slabs off the ground by storing them on pallets or timber supports to avoid damage.
• Protect insulation from direct sunlight, rain, and extreme temperature fluctuations.
• Handle slabs with care to maintain their shape and effectiveness - avoid excessive compression.
• Use gloves and long sleeves when handling to prevent irritation from mineral wool fibres.
• Cut slabs easily with a serrated knife or insulation saw for a precise fit.
• Minimise dust by cutting in a well-ventilated area and using a dust mask if necessary.