RW Slab
Slab Products


An all round performer 

ROCKWOOL RW5 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 RW5 has been developed for thermal, acoustic and fire performance in a range of construction types. RW5 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.

RW5 is rated Euroclass A1 non-combustible, providing the highest level of fire performance. Using RW5 in ceilings, walls and floors can help to compartmentalise rooms, reducing fire spread and damage. 

RW5 insulation slabs achieve Lambda 0.034 W/mK and are available in five standard thicknesses from 25-100mm, with a density of 100 kg/m3.



Euroclass A1 Non-combustible

  • ROCKWOOL RW5 Insulation Slabs offer excellent thermal, acoustic and fire performance.
  • The slabs are easy to handle and install.
  • Rated Euroclass A1 non-combustible, RW5 offers the highest level of fire resistance.
  • RW5 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.

Product Properties

Compliance BS EN 13162, ISO 14001
Reaction to fire Euroclass A1
Thermal conductivity 0.034 W/mK
Water repellent Water Repellent
Water vapour resistance Negligable

Product range and ancillaries

Item number External item number Country Thickness (mm) Width (mm) Length (mm) Pieces Per Pack Packs Per Pallet m² Per Pack m² Per Pallet
181194 181194 UK 25 600 1200 8 24 5.76 138.24
181195 181195 UK 30 600 1200 8 20 5.76 115.2
181197 181197 UK 50 600 1200 4 24 2.88 69.12
181199 181199 UK 75 600 1200 3 20 2.16 43.2
181200 181200 UK 100 600 1200 2 24 1.44 34.56
181265 181265 150 600 1200 2 16 1.44 23.04

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