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Earthwool® RainScreen Slab

Third party certifications:
  • BBA Agrément Certificate

    Certificate type

  • QA Certificate

    Certificate type

Knauf Insulation Ltd

Non-combustible Rock Mineral Wool slabs, designed for use in rainscreen façade systems both below and above 18m in height.

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+44 (0)1744 766 666 www.knaufinsulation.co.uk

Earthwool® RainScreen Slabs are British Board of Agrément (BBA) certified non-combustible Rock Mineral Wool slabs, manufactured with a water repellent additive, and are designed for use in both traditional rainscreen and brick outer leaf facade systems, both below and above 18 m in height.

The slabs are manufactured using Knauf's own ECOSE® Technology, a no-added formaldehyde binder derived from rapidly renewable materials instead of traditional petro-based chemicals used in other insulation products and is classified as zero Ozone Depletion Potential (ODP) and zero Global Warming Potential (GWP).

Features and benefits:

  • British Board of Agrément (BBA) certified).
  • Good thermal performance.
  • Non-combustible A1 Euroclass Reaction to Fire classification.
  • Good sound absorption characteristics provide high levels of sound reduction.
  • Suitable for use on all buildings including those above 18 m in height providing compliance with fire related building regulations.
  • Contributes to building regulation compliance without reliance on separate testing or desktop studies.
  • Provides a unique combination of thermal, fire and acoustic performance.
  • Can be installed either way round on site without compromising performance.

General information

Slab length: 1200 mm

Slab width: 600 mm

Uniclass 2015
Mineral wool slab insulation (Pr_25_57_06_56)Primary
Specification data - Mineral wool slab insulation
Product Reference

Earthwool® RainScreen Slab


See 'Options' below and insert requirements.

Standard product features


  • Slab length: 1200 mm.
  • Slab width: 600 mm.

Thermal conductivity:

0.034 W/m·K.

Fire performance:

Non-combustible and best possible Euroclass Reaction to Fire Classification A1 to BS EN ISO 13501-1.


A+ generic BRE Green Guide rating.

Product Options


  • 50 mm.
  • 60 mm.
  • 70 mm.
  • 75 mm.
  • 80 mm.
  • 90 mm.
  • 100 mm.
  • 110 mm.
  • 120 mm.
  • 130 mm.
  • 140 mm.
  • 150 mm.
  • 160 mm.
  • 170 mm.
  • 180 mm.
  • 190 mm.
  • 200 mm.
  • 210 mm.

Third party certifications
  • 19/5609 Certification for standard rainscreen facade systems : Product sheet 1
  • 19/5609 Certification for brick outer leaf facade systems : Product sheet 2
  • Eurofins: Gold Certificate for Indoor Air Comfort
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