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

URN: 3002260
£25.70ex. VAT £5.95 per m2
£25.70ex. VAT
£5.95 per m2
Coverage required
m
m
Based on your total area of m2 (inc. 10% wastage) - of these are required (actual coverage of m2)

We recommend purchasing at least 10% extra product to allow for errors, damages or obstacles

75mm Rockwool RWA45 is a multi-application thermal, acoustic and fire insulation slab. This mineral wool insulation solution is purposed to minimise noise in a vast range of general building projects.

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Product Overview

75mm Rockwool RWA45 is a multi-application thermal, acoustic and fire insulation slab. This mineral wool insulation solution is purposed to minimise noise in a vast range of general building projects.

URN: 3002260
£25.70ex. VAT

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Delivery & Returns Information

All delivery charges are shown in your basket and are dependent on the total value of items in your basket based on product category.

This charge is based on delivery to mainland UK excluding the following postcodes: AB, DD, KW, IV, LD, LL, PH, SA and SY. If your delivery address is in any of these postcode areas a member of our customer service team will contact you prior to processing your order should an additional delivery charge apply. We do not offer deliveries outside the UK mainland.

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Thermafleece CosyWool Roll & SupaSoft Insulation
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25 to 36 £210 ex. VAT
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Doors and Feature Panelling
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* Deliveries of Doors and Panels to Scotland may incur additional costs and may have an extended delivery time of an additional 3 working days. Delivery to the postcodes below will be charged an additional delivery fee. Our customer service team will reach out to you if you order requires an additional delivery charge. This will be calculated based on the difference between the standard cost charged and the total cost outlined below:

Postcodes: KA1-29, IV1-39, AB, PH1-41, DD, PA1-19, KY, FK, FK15-21 - £90 ex VAT (total delivery cost)
Postcodes: KW 1-14 - £120 ex VAT (total delivery cost)
Highlands and Islands: £280 ex VAT (total delivery cost)

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Express Delivery

Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE DELIVERY CHARGE
Under £400 £50 ex. VAT
Over £400 ex. VAT £35 ex. VAT
Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £300 £50 ex. VAT
Over £300 ex. VAT £35 ex. VAT

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Returns

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Key Features

  • {{home}} Use in ceilings, walls and floors
  • {{local_fire_department}} A1 non-combustible
  • {{density_medium}} 45kg/m3 density
  • {{volume_off}} Excellent acoustic and thermal performance
  • {{build}} 600mm width to fit between studwork
  • {{public}} Zero Ozone Depletion Potential (ODP)

Technical Specification

Technical Specification
Material Type:Rock Mineral
Thickness:75mm
Width:600mm
Length:1200mm
Pieces Per Pack:6
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

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.

Customer Reviews

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5/5 based on 3 reviews

Chose the RWA45 even though this site has an huge product range and was not disappointed reduces risk of fire insulation isn't something I know much about but am very happy with this product

Carl Gibson on

five stars

Matt Richards on

great at sound absoprtion

Jerry Goldman on

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