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Rockwool  |  SKU: 48555996119387

Rockwool Rainscreen Duo Slab - Standard Thicknesses


£58.02 GBP
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Product Datasheets

U-Value Calculator

Things you should know about this product!

  • This product is sold by the pack
  • The amount of slabs in a pack depends on the thickness
  • This product is available in the following thicknesses: 50mm, 60mm, 75mm, 80mm, 90mm, 100mm, 110mm, 120mm, 125mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, 220mm, 225mm, (ALU faced) 180mm

Description

Rockwool Rainscreen Duo Slab is a high-performance, dual-density stone wool insulation, ideal for ventilated and sealed cladding systems. Designed with a high-density outer layer for strong fastening and a flexible underside to adapt to uneven surfaces, it ensures a secure and reliable fit.

This insulation provides excellent thermal performance across both commercial and residential buildings, with U-values that vary by thickness to suit specific project needs. Rockwool Rainscreen is also rated Euroclass A1 non-combustible, adding vital fire safety by preventing flame spread on building facades.

With impressive noise reduction of up to 62 dB, it’s perfect for noise-sensitive environments, blocking sound effectively thanks to its stone wool composition. Lightweight and easy to cut, Rockwool Duo Slab installs easily around brackets and fixings with a standard utility knife. Once in place, it needs little maintenance, retaining its insulating properties for long-term durability and reliability.

Specifications

  • Length
    Varies depending on thickness
  • Width
    600mm
  • Material type
    Stone wool
  • Thermal conductivity
    0.034 W/mK (<90mm) / 0/035 W/mK (>90mm)
  • Fire rating
    Euroclass A1, non-combustible, certified to BS EN 13501-1
  • Density
    60kg/m³

Key Features

Steel frame, Timber frame and Masonry Walls in conjunction with a Cladding System, and Steel Frame or Timber Frame with a Masonry Outer Leaf

Steel Frame, Timber Frame, or Masonry Walls with Cladding System:

  • Thermal Insulation: Rockwool Rainscreen Duo Slab provides effective thermal insulation, helping to reduce heat loss and improve energy efficiency in buildings with these wall constructions.
  • Fire Protection: The slab offers robust fire resistance, enhancing the safety of buildings by helping to prevent the spread of fire through the facade.
  • Acoustic Insulation: It improves acoustic performance, reducing noise transmission through the walls and contributing to a quieter indoor environment.
  • Moisture Management: The material is designed to manage moisture effectively, preventing water ingress and protecting the structural integrity of the building.

Steel Frame or Timber Frame with Masonry Outer Leaf:

  • Thermal Performance: Rockwool Rainscreen Duo Slab enhances thermal performance in buildings with these constructions, ensuring better energy efficiency and indoor comfort.
  • Fire Safety: The slab provides critical fire protection, helping to safeguard the building by resisting the spread of flames.
  • Sound Insulation: It improves acoustic insulation, helping to reduce noise transmission through the walls, which is beneficial in both residential and commercial buildings.
  • Durability: The slab is durable and maintains its insulating properties over time, ensuring long-term performance in various construction types.

Where to use

  • Rainscreen Facades - Rockwool Duo Slabs are specifically designed for rainscreen facade systems, providing both thermal insulation and fire protection.
  • External Walls - This insulation is suitable for external walls with rain-screen cladding, enhancing energy efficiency and moisture management
  • Internal Walls & Floors - Rainscreen duo slab improves acoustic insulation and fire resistance in internal partitions and for insulating floors.
  • Roofs - Rockwool duo slab is ideal for insulation pitches roofs, contributing to indoor temperature stability and energy savings.

How to Install Rockwool Rainscreen Duo Slab Insulation

Installation involves fitting the slabs into cladding system cavities. They can be mechanically fixed or adhered with adhesives, forming a continuous insulation barrier. The slabs knit together at joints, reducing heat loss.

Frequently asked questions

What is Rockwool Rainscreen Duo Slab?

Rockwool Rainscreen Duo Slab is a dual-density stone wool insulation slab specifically designed for use in rainscreen cladding systems. It provides thermal and acoustic insulation while enhancing fire safety in buildings. 

Is Rockwool Rainscreen Duo Slab environmentally friendly?

Yes, Rockwool Rainscreen Duo Slab is manufactured from natural stone wool and contains recycled content. It is free from environmentally harmful substances and supports sustainable building practices. Additionally, it is recyclable at the end of its life cycle.

What are the acoustic performance benefits of Rockwool Rainscreen Duo Slab?

The insulation slab provides excellent acoustic absorption, reducing noise transmission through external walls and improving indoor acoustic comfort. This is beneficial in urban areas or locations with high noise levels. 

Does Rockwool Rainscreen Duo Slab require maintenance?

Once installed, Rockwool Rainscreen Duo Slab requires minimal maintenance. It retains its insulation properties and does not degrade over time, ensuring long-term performance and durability in rainscreen cladding applications.

Payment & Security

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Length
Length
Varies depending on thickness
1200mm
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Width
Width
600mm
600mm
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Edge
Edge
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Square
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Fire rating
Fire rating
Euroclass A1, non-combustible, certified to BS EN 13501-1
Euroclass A1
Euroclass C
Compressive strength
Compressive strength
n/a
n/a
100 kPa
Thermal conductivity
Thermal conductivity
0.034 W/mK (<90mm) / 0/035 W/mK (>90mm)
0.034 W/mK
0.021 W/mK - 0.022 W/mK
Material type
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Stone wool
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How to install Rockwool Ventilated Facades

Rockwool
Rockwool Rainscreen Duo Slab - Standard Thicknesses
From £49.23 GBP

Length

Varies depending on thickness

Width

600mm

Edge

N/A

Fire rating

Euroclass A1, non-combustible, certified to BS EN 13501-1

Compressive strength

N/A

Density

60kg/m³

Thermal conductivity

0.034 W/mK (<90mm) / 0/035 W/mK (>90mm)

Material type

Stone wool
View product