RAINSCREEN DUO SLAB® is a dual density insulation board comprising a robust outer surface and a resilient inner face which has been designed for use in conditions of severe climatic exposure.

When installed, RAINSCREEN DUO SLAB® will knit together when tightly butt jointed, eliminating extraneous heat loss that can be caused through gaps in some insulations. Because of its unique dual density construction RAINSCREEN DUO SLAB® requires fewer fixings, thus providing a cost effective solution in over cladding applications.

Complimentary products include ROCKPANEL - please visit www.rockpanel.co.uk for information.

  • Euroclass A1 non-combustible, ideal for buildings above 18 meters
  • High resistance to wind and rain
  • Fewer fixings required for installation when compared to standard stone wool slabs
  • Robust front face resists damage and over-driving of fixings
  • Cost effective solution for over cladding applications
  • BBA approved
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Watch the transformation from stone to ROCKWOOL insulation

Watch the transformation from stone to ROCKWOOL insulation

Discover the unique benefits of ROCKWOOL insulation

Product Range

Product Code Thickness (mm) Width (mm) Length (mm) Pieces/Pack Area/Pallet (m2) Area/Pack (m2) Packs/Pallet
181214 100 600 1000 6 36 3.6 10
124654 125 600 1000 5 30 3 10
124656 150 600 1000 4 24 2.4 10
124659 180 600 1000 3 18 1.8 10

Technical Information

Property Description
Dimensions 1000 x 600mm
Thickness 100 - 180 mm
Thermal Conductivity 0.035 W/mK
Fire Properties A1 (BS EN 13501-1)
Specific Heat Capacity 0.84 kJ/kgK
Vapour Resistivity 5.9 MNs/gm
Environmental Zero ODP & GWP
Recycled Content 25% - 50% (Depending on definition)
Standards BS EN 13162, ISO 14001:2004
Certification LPCB 022e, LUL (London Underground)


Brochures (3)
Part L 2010 - U-values

A comprehensive guide to using ROCKWOOL products to achieve required U-values as per Part L 2010.

Datasheets (1)

RAINSCREEN DUO SLAB® is a dual density slab which has been specifically developed for insulation behind rainscreen cladding systems and also for sealed cladding systems such as curtain wall and other over cladding systems.

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