Thermoshell with rock mineral wool ThermoShell Logo  Thermoshell with Foam

Turning the world of insulation inside out with ThermoShell External Wall Insulation

EWI - It’s what’s on the outside that counts

Buildings account for 40% of our energy consumption, in houses up to 45% of this energy is lost through the solid walls of the dwelling. Insulating solid walled homes has traditionally  been considered expensive and ‘hard to treat’, but now there’s  a perfect solution – ThermoShell® External Wall Insulation.

External Wall Insulation acts as a shell, protecting your property from the elements and helping to retain the warmth on the inside, while in warmer climates it can also help to maintain a cooler internal environment.  In addition to all this, it saves energy, reduces fuel bills and  helps towards the reduction in carbon emissions, associated with the dwelling.

ThermoShell EWI is part of the changing face of building methods within the UK, with the ability to not only deliver a thermally efficient, carbon saving façade, but also to visually improve buildings and at the same time extend the life and value of the building itself. Specifically suited to the existing solid wall market, the highly breathable rock mineral wool ThermoShell System provides a healthier indoor climate  and reduced problems associated with damp and condensation. With its state of the art manufacturing technology, large range of finishes, suitability for most substrates and the knowledge that the system is manufactured by a world leading company in energy reduction,  ThermoShell EWI is turning insulation inside out.

ThermoShell EWI Products

 Energy loss through walls

Case Studies

Energy loss - roofs, windows and doorsSolid reasons to choose ThermoShell EWI

ThermoShell from Knauf Insulation is a robust and versatile  solution to an increasing demand for thermal protection, particularly in solid wall properties.

The availability of both high-density rock mineral wool slabs and expanded polystyrene (EPS) ensures that ThermoShell can be used in a wide range of applications. High quality silicone and mineral topcoat renders - designed to resist UV degradation and cracking - provide a superior finish to a superior system. New high performance self maintaining paints, which can be used in conjunction with the system not only extends the life of a building, but also allows it to be brought to life with colour.

Benefits of EWI Systems
 
  • Externally insulated, so no disruption to occupants
  • Meets current as well as anticipated future thermal regulations
  • Breatheable rock systems allow for the removal of water vapour
  • Durable and designed for the lifetime of the building
 
  • Prolongs building life
  • Aesthetically pleasing
  • Low maintenance
  • Extensive range of finishes and colours
  • Reduces CO2 emissions
  • Reduces fuel consumption and energy bills

Thermal performance

  • 110mm of ThermoShell Rock mineral wool system onto a solid 225mm brick wall will achieve a U-value of approx 0.29 W/m2K
  • 120mm of ThermoShell Rock mineral wool system onto a solid 225mm brick wall will achieve a U-value of approx 0.27 W/m2K

Thermoshell Cutaway
Features
  • Vapour permeable
    The nature of mineral renders and rock mineral wool insulation provides excellent breathability, allowing moisture to permeate through the system
  • Water repellent
    High performing topcoats and renders prevent water ingress into the system
  • A1 fire rating
    ThermoShell Rock Slab is non-combustible and classified as A1 to BS EN ISO 13501-1
  • Excellent weathering protection
    Through years of technological advancement, the ThermoShell system is designed to cope with a variety of climates. Ultra Violet (UV) resistant coatings ensure excellent weathering protection and a durable finish to the topcoat
  • Better acoustic performance
    The ThermoShell Rock system can improve the acoustic performance of the wall, reducing the ingress of external noise

ThermoShell  Rock Mineral  Wool System

The ThermoShell (TS) Rock mineral wool system incorporates a high strength, rock mineral wool slab with a specifically designed water repellent additive.

Rock mineral wool has a very high compressive  strength, twice that of some other External Wall Insulation slabs, making ThermoShell Rock a  robust and durable system with high impact strength,  which is less prone to damage.

The highly breathable nature of rock mineral wool  is perfect for existing solid wall properties, allowing for  a cleaner, healthier internal living environment.

 

 

Diagram

ThermoShell Rock Diagram


Thermoshell Cutaway
Features
  • Cost effective
    ThermoShell EPS is a more cost effective solution when compared to other foam products
  • Water repellent 
    High performance topcoats and renders prevent water ingress into the system 
  • Lightweight 
    Lightweight and easy to handle and install
  • Excellent weathering protection 
    Through years of technological advancement, the ThermoShell system is designed to cope with a variety of climates. UV resistant coatings ensure excellent weathering protection and a durable finish to the topcoat
  • Ease of use for detailing 
    Easy to cut and fit around architectural details such as dentil courses and corbelling especially when using a hot wire cutter
  • Thermal performance 
    ThermoShell EPS provides high levels of thermal resistance

ThermoShell  EPS System

ThermoShell (TS) Expanded Polystyrene (EPS) is an effective solution for thermal upgrading and it’s lightweight nature makes it perfect for easy handling and speedy application.

In addition, due to substrate loading, the EPS board is suitable for Secondary Thermal Upgrading (STU). STU refers to existing properties that already have some form of EWI system in place and require extra thermal upgrading.

The outstanding efficiency of EPS allow for  reduced thicknesses, whilst still maintaining  the thermal performance levels required.

ThermoShell EPS has a thermal conductivity  of 0.032 W/mK.

Diagram

ThermoShell EPS

 


Renders - Put a good face on it

First impressions last, that’s why the quality of the render is of the utmost importance. 
The ThermoShell range of renders are both decorative and robust, providing the perfect finish to any building.

Mineral Render benefits   Silicone Render benefits
 
  • Robust 
    Mineral and marble aggregates provide a  long-lasting durable finish
  • Open to diffusion 
    Excellent vapour diffusion qualities when  compared to other types of finishes
  • Various textures 
    Mineral renders allow for freedom of design  when structuring the product, from fine  detailing to traditional rustic appearances
  • Good for winter working 
    Fast setting times mean that the finish does  not ‘hang’ too long in winter conditions
  • Compatible with TS-Self Clean Paint 
    By using TS-Self Clean paint, you can provide the  mineral finish with a durable, low maintenance coating
  • Part of a fully mineral system 
    Use with ThermoShell Rock mineral slab to  provide a complete mineral based system
   
  • Vapour permeable 
    Offers negligible resistance to the passage of water vapour
  • Ready mix 
    Pre-mixed in the tub so it’s ready to use
  • Wide range of colours 
    Silicone render can be produced in an extensive range of colours
  • Compatible with TS-Self Clean paint 
    For extra protection in highly exposed areas,  use TS-Self Clean paint
  • Flexible 
    Silicone render is flexible and accommodates  minor movements
Available in grain sizes: 1.5mm, 2mm, 3mm and 5mm    Available in grain sizes: 1.5mm, 2mm and 2.5mm

*Both renders are suitable for use as a render only system with TS-Onecoat


Make a colourful statement

An extensive range of colours

Add an element of style and individuality  to any building with Knauf Insulation’s  range of colours that can be applied to ThermoShell EWI systems.

Available in over 200 colours with an exclusive  range of the 12 most modern colours, the range  rejuvenates tired looking buildings, enhancing  the look and the value of the property and  giving you the freedom to turn your project into  a work of art.

TS-Equaliser and TS-Self Clean

The Knauf Insulation range of high performance paints utilises new technology in providing long life over-coatings and self cleaning finishes.

TS-Self Clean is specially developed to allow rainwater to pick up and transport dirt away from the surface of the facade, keeping it cleaner looking for longer.

 

More about ThermoShell EWI Colours


Technical Information

The right support is critical to establishing a good project. From  first point of contact to the completion  of the job, Knauf Insulation will be  by your side every step of the way.

Technical support includes:

  • NBS specifications
  • Detail drawings
  • U-value calculations
  • Site inspections
  • Project supervision
  • Product sample service

Rigorous testing in some of the most  sophisticated laboratories in Europe ensures that the ThermoShell System  will last the lifetime of the building it is applied to. Knauf Insulation as part of the Knauf Group of companies has  the capability of manufacturing all  the key components for the External Wall Insulation system, placing us  in the enviable position of having complete control over manufacturing quality and standards.

U-value table for ThermoShell External Wall Insulation System (W/m2K)

Insulation Thickness (mm) 225mm solid brick wall1 215mm solid block wall2 250mm brick/block cavity wall unfilled3 250mm brick/block cavity wall filled4
  Rock* EPS** Rock* EPS** Rock* EPS** Rock* EPS**
50 0.54 0.48 0.52 0.46 0.51 0.46 0.33 0.31
60 0.48 0.42 0.45 0.40 0.45 0.40 0.30 0.28
70 0.42 0.37 0.41 0.36 0.40 0.35 0.28 0.26
80 0.38 0.33 0.37 0.32 0.37 0.32 0.26 0.24
90 0.35 0.30 0.33 0.29 0.33 0.29 0.25 0.22
100 0.32 0.27 0.31 0.27 0.31 0.27 0.23 0.21
110 0.29 0.26 0.28 0.25 0.28 0.25 0.22 0.19
120 0.27 0.24 0.26 0.24 0.26 0.24 0.21 0.18
130 0.26 0.23 0.25 0.22 0.25 0.22 0.20 0.17
140 0.25 0.21 0.24 0.21 0.24 0.21 0.19 0.17
160 0.22 0.19 0.21 0.19 0.21 0.19 0.17 0.15
180 0.20 0.17 0.19 0.17 0.19 0.17 0.16 0.14

* ThermoShell Rock has a thermal conductivity of 0.038 W/mK

** ThermoShell EPS has a thermal conductivity of 0.032 W/mK

1 Lambda value of brickwork - 0.770 W/mK      
2 Lambda value of block - 0.45 W/mK               
3 Lambda value of block - 1.130 W/mK             
4 Lambda value of block 1.130 W/mK - cavity insulation - 0.040W/mK

The above figures are indicative and should only be used as a guideline. Knauf insulation would always recommend that a U-value calculation and condensation risk analysis is performed for each project


ThermoShell Recommended Installer Scheme

A quality system requires a quality installer

The ThermoShell Recommended Installer Scheme is designed  to train, monitor and update installers regarding the best way of using the materials. The scheme is designed to address the needs of each installer - from more intensive close quarter training for new installers, to technical update seminars for  well-established professionals. Our system will be judged upon the quality of installation; therefore it makes sense to make sure our installers are the best.


Community Energy Saving Programme (CESP)

Knauf Insulation is proud to support the Community Energy Saving Programme (CESP), which aims to improve energy efficiency standards and reduce fuel bills in areas of low income. CESP promotes a ‘whole home’ approach and implements energy saving measures best suited to the individual needs of a property. 

The ThermoShell System can play a major role in this scheme, as it helps to provide exceptional energy savings in solid wall properties, which are usually considered ‘hard to treat’. With help from ThermoShell, the scheme hopes to save nearly 2.9m  tonnes of CO2 and cut an average of £300 from the fuel bills  of around 90,000 homes.*


*Figures courtesy of Energy Saving Trust


Downloads

ThermoShell Launch Brochure

 

 ThermoShell Colour Chart

ThermoShell Launch Brochure   ThermoShell Colour Chart

 

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