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Rockwool thermal and fire performance


ROCKWOOL RWA45 is a robust insulation solution for a range of general building projects as well as specialist specifications such as commercial, leisure, industrial and more. The insulation provides excellent acoustic, thermal and fire performance.

Minster stock ROCKWOOL RWA45, ready for nationwide delivery throughout our branch network. Speak to your nearest branch about ROCKWOOL.

ROCKWOOL RWA45 has been developed for thermal, acoustic and fire performance in a range of construction types. RWA45 is made up of high-quality resin bonded slabs in a variety of thicknesses and densities. Minster staff have lots of experience when it comes to helping our customers choose the right products for their projects; so, when you are ready you should call your local Minster team so that we can make sure you get the right products for the right pricing with the best operations and logistics service.

The ROCKWOOL slabs can be applied to an array of general building applications for acoustic and thermal insulation of partition walls, ceilings, floors and roofs. The multi-use solution is well suited for easy application throughout constructions, from house builders, renovators and commercial builders, ROCKWOOL RWA45 is a great choice due to its versatility and properties.

RWA45 is rated Euroclass A1 non-combustible, providing the highest level of fire performance. Using RWA45 in ceilings, walls and floors can help to compartmentalise rooms, reducing fire spread and damage.

RWA45 insulation slabs achieve Lambda 0.035 W/mK and are available in seven standard thicknesses from 25-100mm, with a density of 45 kg/m3.

Why ROCKWOOL RWA45?

  • ROCKWOOL RWA45 Insulation Slabs offer excellent thermal, acoustic and fire performance.
  • The slabs are easy to handle and install.
  • Rated Euroclass A1 non-combustible, RWA45 offers the highest level of fire resistance.
  • RWA45 is a durable insulation solution which will maintain high performance over the lifetime of the building.
  • The water repellent qualities of the insulation prevent moisture build up, damp and rot.

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