Ex Vat Inc Vat

ROCKWOOL RWA45 Slab 100mm

£17.50 Ex Vat £21.00 Inc Vat
VAT excluded

The Rockwool RWA45 100mm is a high performing acoustic fireproof insulation slab often used in floors, walls and roofs.

This is a pack of 4 slabs which will cover 2.88sq.m.

Width: 600mm
Length: 1200mm
Thickness 100mm

Delivery from our North England & South Scotland Branch

Please see our Delivery Map for Area

North England & South Scotland Branch - 1 to 3 Working Day Delivery

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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. 

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. Specialist facings are available to order to meet the specifications of unique projects.

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.

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.


  • 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.


Reaction to fire - Euroclass A1
Thermal Conductivity - 0.035 W/mK
Water repellent - Yes
Water vapour resistance - Negligable

Delivery Map - Contact us if outside of this area


Data sheet

North England & South Scotland

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