75mm Rockwool RWA45 Acoustic Sound Insulation Slab (4.32m2/Pack)

What Is RWA45 75mm? 

Mitigate disruptive noises with 75mm Rockwool RWA45 Acoustic Insulation. Crafted from rock mineral wool, 75mm rockwool insulation provides superior acoustic, thermal, and fire-resistant properties.

With a density of 45kg/m³, these resin-bonded slabs are perfect for soundproofing, making them ideal for isolating floors and internal walls. The slabs are precisely cut to 1200mm x 600mm, allowing easy integration into standard stud partitions and floor joists spaced at 600mm intervals.

With a low thermal conductivity of 0.035 W/mK, RWA45 75mm effectively helps regulate temperature, improving energy efficiency and reducing heat loss. In addition to its thermal benefits, 75mm Rockwool RWA45 meets rigorous safety standards, earning an A1 non-combustible rating in accordance with BS EN 13501-1, ensuring excellent fire resistance.

Where is 75mm Rockwool RWA45 Sound Insulation Slab Used? 

75mm Rockwool Insulation Slabs are perfect for use in walls, floors, stud partitions and lofts to control home acoustics and reduce noise.
The slabs can be used for the following:

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

Rockwool 75mm RWA45 Benefits

• Low Global Warming Potential (GWP) and Zero Ozone Depletion Potential (ODP)
• Rot-resistant - withstands mould and mildew
• Thermal conductivity of 0.035 W/mK
• Hydrophobic - water repellent properties
• Offers high performance over the lifetime of your build
• Excellent thermal, acoustic and fire preventative properties

Rockwool RWA45 75mm Acoustic Performance

Rockwool thermal and acoustic insulation slab is best known for its excellent acoustic performance and prevention of noise transmission from room to room, making it ideal for installation in internal and separating walls.

Rockwool stone wool products reduce noise in two primary ways: by blocking sound transmission through structural elements and by absorbing sound at the surface. The high density and non-directional fibre structure of Rockwool make it exceptionally effective at trapping sound waves and dampening vibrations. 

Rockwool 75mm RWA45 Certifications

BS EN is British and European Standard Specifications. With over 100 years of experience, the British Standards Institute is recognised as the UK’s National standards body. BS EN considers Rockwool both:

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

100mm Rockwool 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

75mm Rockwool RWA45 Insulation Storage & Handling

Rockwool rwa45 75mm slabs have a soft, fibrous texture, similar to a loaf of bread. Because of this, a serrated blade is all you need to slice through them.

In terms of storage, we advise you to store the slabs inside in a dry and thermally regulated environment.

About Rockwool

Rockwool is recognised as being the market-leading acoustic insulation solution. All Rockwool RW slab products offer outstanding fire, acoustic and thermal insulation properties as well as lifelong durability.  The product range consists of high-quality resin bonded slabs in a variety of thicknesses and densities. Rockwool RW semi-rigid slab products, either un-faced or with an aluminium foil or glass fleece on one or both surfaces, achieve an A1 classification in accordance with BS EN 13501-1 and thus meet the requirements of non-combustible materials, as defined in UK and Ireland Building Regulations.