Rockwool RWA45 - Mineral Wool Acoustic Insulation Slab

Special Price £35.21 PRICE PER ITEM Regular Price £44.02
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Estimated Delivery: 2-5 Days
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Product Description

Rockwool RWA45 sound insulation offers high performance against both heat loss and noise. These Rockwool slabs are highly versatile, able to insulate floors, walls, and ceilings. In addition to outstanding thermal and acoustic performance, the Rockwool RWA45 is fire rated, water repellent, and highly durable thanks to its resin-bonded mineral wool construction. Homeowners will find these slabs easy to install due to their light weight.

Rockwool RWA45 sound slabs are incredibly popular throughout the construction industry, used in residential properties, commercial premises, and industrial buildings alike. Available pre-cut in a selection of thicknesses and widths, you’re sure to find the slab to suit your project. If you need to cut these slabs to size, you can do so easily with a sharp knife with a straight or serrated edge.

Overview of the Rockwool RWA45 Mineral Wool Acoustic Insulation Slab

  • Extremely Versatile: These slabs can insulate floors, ceilings, and walls
  • Range of Thicknesses: Rockwool in 50mm, 75mm, and 100mm slabs
  • High-Quality Materials: Traditional mineral wool crafted with Rockwool’s unique expertise
  • Thermal Performance: CE Marked to EN 13162, with a thermal conductivity rating of 0.040 W/mK
  • Sustainable: Made from natural materials and 97% recyclable at the end of their life
  • Simple Installation: The rigidity of these Rockwool slabs makes slotting them into place a breeze
  • Built to Last: Resistant to moisture, mould, and other issues, 70-year lifespan
  • Zero Maintenance: Once installed, these Rockwool RW slabs require no ongoing maitnenance

What Are Rockwool RWA45 Acoustic Insulation Slabs Made From?

These Rockwool slabs are manufactured from a uniquely formulated rock-based wool, which has been refined through Rockwool’s decades of experience in quality products and engineering. Thanks to their expertise, these slabs offer outstanding thermal and acoustic insulation for residential, commercial, and industrial properties. In addition, Rockwool RWA45 is 97% recyclable at the end of its 70-year lifespan.

What Thicknesses and Sizes Are Available? 

Thickness (mm) 

Length (mm) 

Width (mm) 

Quantity (slabs) 

Coverage (m2) 

50 

1200 

600 

9 

6.48 

75 

1200 

600 

6 

4.32 

100 

1200 

600 

4 

2.88 

Where Can the Rockwool RWA45 Be Used?

These Rockwool slabs can be used in ceilings, walls, and floors, offering effective thermal and acoustic insulation in both. Minimising both acoustic and thermal bridging, the noise reduction and additional comfort of these insulation slabs is undoubtedly noticeable, with exceptional results.

What Level of Sound Insulation Do RWA45 Acoustic Slabs Provide?

Rockwool sound slabs offer unparalleled levels of acoustic insulation. They do this in two ways, firstly by preventing the transmission of sound through the body of each slab, or by absorbing sound at the surface. This is thanks to their specialised construction, as the structure of the Rockwool fibres themselves offer high coefficients over a wide frequency range.

What Level of Thermal Insulation Does the Rockwool RWA45 Offer? 

While the acoustic properties of this Rockwool slab are absolutely outstanding, the thermal conductivity it possesses cannot be understated either. This slab has an impressive thermal conductivity of 0.040 W/mK – more than suited for many residential walls and floors. This will allow you to create both a comfortable warm and peaceful living space for the entire family.

Is Rockwool RWA45 Resistant to Moisture?  

Due to these Rockwool sound slabs being made from a hardy volcanic rock, they boast excellent natural resistance to moisture damage. This protects them from mould, rot, and other issues, extending their lifespan and ensuring their effectiveness for years to come.

Is This Insulation Resistant to Fire?  

Able to withstand temperatures over 1000C°, the Rockwool RWA45 sound slab easily achieves a Euroclass A1 fire rating in accordance with BS EN 13501-1. Therefore, these slabs comply with non-combustible requirements as defined by UK and Irish Building Regulations. Not only will these slabs prevent fire damage, they will also limit and slow the spread of flames.

How Sustainable Are These Rockwool Slabs?  

Designed to minimise environmental impact, Rockwool RWA45 slabs are sustainably sourced and 97% recyclable. What’s more, the production processes used when manufacturing these slabs have both zero Ozone Depletion Potential (ODP) and zero Global Warming Potential (GWP). Not only do these slabs reduce the energy used by households, but they’re made in a sustainable way too.

Have a Question About the Rockwool RWA45 Mineral Wool Insulation Slab?

If you’ve got any questions about our Rockwool sound insulation range, get in touch with our award-winning customer service team. Call them on 01295 565 565, email [email protected], or use our handy online chat. We’ll help get your project started as soon as possible.

Product Specifications

View as Feet & Inch
More Information
SKURWRWA45
Lead Time2-5 Days
BrandRockwool
U Value0.035
Overall Length1200 mm
Overall Width600 mm

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Delivery Information

We understand that ordering products online can be daunting, especially when ordering roofing materials. It is for this reason that we make our delivery processes as simple as possible for you. However, there are a few things to know about our delivery processes. These include:

  • When placing an order, you’ll see a breakdown of your delivery charge in your shopping cart. These charges are for the UK mainland only, and additional charges may apply for Northern Ireland, the Scottish Highlands and other regions.

  • Deliveries only take place on working days (Mon - Fri) and do not take place on Bank Holidays. 

  • You’ll find an estimated delivery on the majority of product pages below the 'Add to Basket' button. Whilst we aim to deliver your items within the estimated delivery, it is only an estimate. 

  • You're able to select a preferred delivery date in your shopping basket. Whilst we aim to deliver your items on this date, it is not guaranteed.
  • Orders placed after 12pm, during the weekend, and on a bank holiday will not be processed until the next working day. Please consider this when placing your order as it may impact your delivery date.

  • After you’ve placed your order, you’ll receive an order confirmation by email outlining the details of your order. Please check your order confirmation email and inform us of any mistakes or errors immediately.

  • Shortly after receiving your order confirmation you’ll receive a separate email confirming the planned delivery date.

  • We can only provide a delivery date and are not able to confirm the time delivery will be attempted. Therefore, we ask that somebody is able to accept and sign for your items throughout the started delivery date.

  • If you are unable to accept and sign for an order, it can be left in a safe location in most circumstances. Please email [email protected] if you would like an item to be left without a signature. 

  • Whilst we aim to hold the majority of our products in stock, due to the vast number of products we offer this is not always possible. Because of this we are required to send your items directly from the manufacturer on a small number of occasions, at which point a different delivery charge may apply as standard.  

  • On occasions the items ordered may be shipped from different depots, which could result in seperate deliveries taking place.

If you have more questions about our products or delivery, please contact our team online or by telephone.

Refund Information

We understand mistakes can be made and we therefore keep our cancellation and returns policy as simple as possible. However, there are a few things to know about cancelling an order or returning an item. These include:

Items Not Required

Should you no longer require an item, you have the right to cancel within 14 days of delivery unless the items are custom made. You needn’t give us reason for cancelling your order but will be required to notify us by email. Once notified we will provide an address for the items to be returned to and arrange the necessary refund.

Faulty or Damaged Items

On the rare occasion that an item is delivered faulty or damaged, we will exchange it or provide a refund. We must be notified by email as soon as possible and may require images. To avoid such an issue, we ask that customers do not sign for damaged goods.

Custom Made Items

A handful of items are ‘Custom Made’. This means they are typically manufactured to the specifications provided by you and are therefore non-refundable. This is unless they are deemed to be faulty or damaged at the time of delivery, at which point you should notify us by email as soon as possible.

Further Information

For further information on cancellations, returns and refunds please read our full policy by clicking here. This confirms any other requirements to consider (i.e. packaging), fees that may be charged (i.e. admin charges) and our policy for businesses.