Rockwool RWA45 insulation slabs are an acoustic slab, which are robust and easy to install. RWA45 Rockwool is made from a high quality resin, which is bonded into slabs.These slabs boast outstanding thermal and acoustic performance as well as protection against the spread of flame. RWA45 insulation is rated Euroclass A1, which means it is classed as non-combustible. It offers the highest level of fire resistance. In addition to this, Rockwool RWA45 can be applied to many building applications. This includes in ceilings, floors, roofs and even partition walls. The wide variety of applications makes Rockwool RWA45 a perfect choice for builders.

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Rockwool 100mm RWA45 Acoustic Insulation Slab (1200 x 600mm) – 2.88m2 pack

£22.49 ex VAT

RWA45 Rockwool

RWA45 insulation slabs are easy to handle and cut. The slabs themselves are water-repellent and provide excellent thermal and acoustic properties. In addition to this, RWA45 Rockwool slabs are non-combustible and cost-effective. Rockwool RWA45 can be cut to size using a sharp knife. This makes them very easy to install. Once they are installed, they require no maintenance but boast protective and insulative qualities. The effort and time required are considerably reduced when installing RWA45 slabs. This is why Rockwool RWA45 is a popular choice amongst builders.

When it comes to cost, RWA45 is one of the most cost-effective acoustic insulation solutions. The product is certified to EN 13162 and is formed using high-quality bonded resin. Rockwool RWA45 is made from stone wool, which is great at obstructing sound transmission and therefore absorbing sound waves. This is why the RWA45 is used in a lot of acoustic applications. In addition to this, the product is coated in a water-repellent seal, which helps prevent decay from moisture.

Rockwool RWA45 Slabs are 1200mm in length and 600mm in width. Each slab has a coverage of 0.72m2. They are available in thicknesses ranging from 25mm to 120mm. Furthermore, RWA45 boasts a thermal conductivity of 0.035 W/mK. The slabs comply with the requirements of non-combustible insulation, which is defined in all UK Building Regulations.

Dimensions: 1200mm x 600mm
Thickness: 25mm – 120mm
Slab Coverage: 0.72m2
Thermal Conductivity: 0.035 W/mK

The pack size varies per thickness required. Individual product pages will show a full breakdown of the pack sizes for the selected thickness.

Key Features Of Rockwool RWA45

  • RWA45 is multi-use and easy to install
  • Rockwool RWA45 slabs can be cut to size
  • The slabs provide outstanding thermal and acoustic properties
  • Rockwool RWA45 achieves a non-combustible fire rating – A1 classification to BS EN 13501-1
  • It is cost-effective and durable

Why is it called RWA45?

The '45' in Rockwool 'RWA45' refers to the density of the slab. RWA45's density is 45 kg/m3 and is available in thicknesses ranging from 25mm up to 100mm. The thickness required is dependent on the application type. A builder or architect should be able to guide you on which thickness you require for your project. In addition to this, we also have written a handy guide on the Rockwool RW Range. The purpose of this guide is to inform you about the Rockwool RW range and the differences between each product. In terms of thermal performance, the Rockwool RWA45 is the best-performing slab in the Rockwool RW Range. Furthermore, the Rockwool RWA45 is one of the most popular products of the RW range.

Why Choose Rockwool?

Rockwool is very popular and well respected insulation company. The company's first stone wall productions were made in 1937 and have since then evolved into the product offerings seen today. In 2017, Rockwool celebrated its 80th birthday. Rockwool pride itself on being an innovative company with a lot of focus on research and development. In 1981, the Rockwool Foundation was set up. This is an independent and financially self-supported company, which aims at finding the answers to problematic issues in today's society. Moreover, they achieve this through unbiased research into economic and social issues. In addition to this, the Rockwool Foundation put a big focus on the sustainability of the welfare society.
Rockwool as a company is always investing in R&D. They demonstrate this by constantly improving their products and processes to be more sustainable, healthier and environmentally friendly. This is a part of the DNA of the company and is a reason why Rockwool remains to be one of the market leaders in insulation. In particular mineral wool insulation.

Rockwool RWA45 Insulation

RWA45 Rockwool insulation has many protective qualities, which make it the great insulation product that it is. The product performs well in four key areas, which are acoustic, fire, thermal and water repellency.

Acoustic Performance: Rockwool RWA45 slabs have excellent acoustic properties. The stone wall material is ideal for absorbing sound waves and also hindering the transmission of sound through the structure of the building. Furthermore, the manufacturing process of Rockwool RWA45 means that the finished product works well as a sound absorber. Some builders pair thicker RWA45 slabs with plasterboard to further control the noise. Furthermore, the RWA45 is classed as an acoustic slab.

Fire Performance: RWA45 classes as non-combustible and achieves a fire rating of A1. This complies with UK & Ireland Building Regulations. Using this product could help prevent the spread of flame and provide added protection from fire damage.

Thermal Performance: Rockwool Mineral Wool products are known for their excellent thermal performance. The Rockwool RWA45 is no exception to this. Furthermore, the insulative qualities can help reduce energy usage by decreasing the need for heating and cooling in buildings.

Water Repellent Performance: Rockwool Slabs are coated with a water-repellent seal. This makes the slabs repel moisture, which could cause damage and affect the performance of the insulation. The water-repellent slabs help prevent moisture build-up to deter dampness, condensation and rot. All of which could cause structural damage.

Overall, Rockwool RWA45 Insulation is a great product, which is cost-effective and can be used in an array of applications.
Furthermore, you can find a product video. The video demonstrates the protective qualities and also shows how easy the slabs are to cut and install.

Rockwool RWA45 Data sheet

You can find all Rockwool Datasheets on our website on the product pages. In addition to this, we have also included the Rockwool RWA45 Data Sheet links on this page, which can be seen below.
Rockwool RW Slabs Datasheet
MSDS Rockwool (Safety Data Sheet)
Rockwool Slab Installation Guide