Knauf insulation

Knauf insulation is a type of rock wool insulation that takes the form of rigid boards or slabs and is intended for external wall applications. The magic of Knauf Dual Density insulation slabs is their unique ability to accept renders directly onto the high-density side while at the same time accommodating imperfections in the wall on the low-density side.

Knauf EWI Slab range offers all the benefits listed below.

BBA Certified
Excellent thermal performance.
Manufactured in the UK
Non-combustible A1 Euroclass Reaction to Fire classification
Manufactured in the UK
Non-combustible A1 Euroclass Reaction to Fire classification
Excellent sound absorption characteristics provide high levels of sound reduction
Suitable for use on all buildings including those above 18m 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.
Environmentally friendly, made from bountiful, natural resources.

Very easy to shape and install.

Highly water-resistant, will not be deformed by contact with water.

A high degree of breathability that prevents condensation, mould and mildew.

Produced in an energy-efficient environmentally friendly way.

Rock mineral wool contains no ozone-depleting gases.

The fact that it is highly breathable also means it won’t lock in moisture that might undermine structural integrity. Using Knauf Insulation on London properties enables builders, renovation contractors and home and business owners to enjoy all these benefits and more.

All That and Eco-Friendly to Boot

This type of glass mineral wool external wall insulation is extremely versatile, exemplified by the fact that it also provides impressive acoustic insulation, so you can lock in the heat while locking out street noise. It’s also one of the more environmentally friendly types of insulation.

Knauf insulation is produced from basalt – a type of volcanic rock that is abundant in nature – and recycled slag which is a by-product of steel production. But that is just the tip of the iceberg when it comes to the company’s environmentally friendly stance. Their overarching goals embody a deep commitment to conducting business in a more enlightened way, including:

Respect for Your Comfort and for the World Our Children Will Inherit

Knauf insulation products rely on eco-friendly insulation materials, it’s true. But the company’s commitment to the world we all share goes beyond their dedication to creating environmentally friendly products and extends to ensuring they use an environmentally friendly manufacturing process that is fed by sustainable supply chain operations.

Knauf goes to great lengths to ensure their manufacturing equipment is energy efficient, their production facilities are continually moving toward a carbon-neutral stance, and that they invest copious resources into continual research and development of ever-better manufacturing processes. The following sustainability considerations are at the heart of everything the company does:

  • The conservation of natural resources.
  • Reducing the impact of their process on the environment.
  • Delivering their insulation solutions in the most efficient manner possible.
  • Creating insulation materials that enable healthy comfortable indoor environments.
  • Continually reviewing and refining their processes.


Knuaf Earthwool Rainscreen Slab

Earthwool RainScreen Slabs are non-combustible Rock Mineral Wool slabs, manufactured using our revolutionary ECOSE® Technology and a water repellent additive, and are designed for use in rainscreen façade systems both below and above 18m in height.

Additional Info

Thickness 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 180mm, 200mm, 210mm, 220mm, 250mm, 260mm, 270mm

Download Data Sheet

Technical Data Sheet

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