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Warmshell External Insulation (EWI)
Warmshell is a highly effective External Wall Insulation system (EWI) using wood fibre, or a choice of other boards, that is fitted to the outside of the property – creating a significantly warmer and more comfortable living environment.
 The system comprises of three main components:

  1. Insulation boards – in a choice of thicknesses and types

  2. Specialist fixings – to suit the specifics of your building

  3. Traditional lime render – in a range of colours and textures

By choosing the correct thickness of wood fibre insulation you achieve the highest standards of thermal efficiency in a way that suits your home and your budget.

Warmshell external insulation enhances the appearance of your home. You can choose the look and colour you want. And, because our renders are so good at resisting stains and the build-up of mould, your property can will look great for decades to come.

Ideal for many different types of property
You can use Wamshell external insulation for almost any type of property:

  1. Brick, masonry, solid wood or timber frame buildings

  2. Contemporary or traditional designs

  3. New build or retro-fitted installations

  4. Domestic or commercial premises
  5. Hyper-insulated eco-homes or historic landmarks

To benefit, you just need to be able to get access to the exterior of the entire property and abide by any applicable planning restrictions.

But, of course, if you have a terraced or semi-detached property, live in a conservation area, or simply want to retain the existing look of your house, you can still benefit from our interior Warmshell Internal system.

Achieve the look you want
With the Warmshell external insulation system, you can enhance the appearance of your home – irrespective of whether the look you want is contemporary, rustic or traditional.

One of the benefits of Warmshell is the wide choice of different finishes. Whether you want our lime render for the artisan craftsman, or modern, easy-to-use, silicate thincoat render, we have a many different textures and colours.

But what you won't find is polymer, resin or silcone renders. We think the rubberised, synthetic finishes seen so often don't do justice to beautiful buildings. So all our finishes are made from minerals, not plastics. It means they weather and age like brick or stone, as well as being better for the environment.

And, to help you make your choice, we can always provide sample bags to help decide on the texture, colour and style of render finish you want.

Warmshell for new timber frame buildings
Unlike standard methods of timber frame insulation (where the insulation in-fills just between timbers), Warmshell Woodfibre insulation completely encases the property.

This offers a number of significant advantages.

You can expect a Warmshell wall to be warmer, more airtight, and have better acoustics than a standard timber frame design. In practice this means that a wall as thin as 260mm will meet Building Regulations standards (0.18 U Value) without the need for additional waste water heat recovery systems or triple glazing. For these reasons, along with its stunning looks and sustainbly sourced raw materials, Warmshell using woodfibre is the obvious choice for timber frame, whether you're building your dream home or specifying a large commercial Passivhaus project.

Warmshell for historic timber frame buildings
Warmshell is an ideal way to upgrade the thermal performance of existing timber frame buildings.

Breathability is vitally important in historic buildings, as are hydroscopic materials that buffer moisture, protecting delicate structures from decay. So, Warmshell Woodfibre creates a breathable yet airtight envelope around the building – virtually eliminating thermal bridging and drafts, which can seriously compromise energy efficiency. And it can be finished with a beautiful, traditional appearance.

Warmshell for brick or masonry buildings
Warmshell external insulation is a fantastic way to make solid wall brick or masonry buildings significantly warmer and more comfortable to live in. And, you can still keep the beautful, original look of lime.

With a choice of 3 different insulation types, including a Class A board for tall buildings, woodfibre for highly sustainable builds and Graphite EPS for those on a tight budget, Warmshell is suitable for most masonry and concrete buildings.

What's more, Warmshell has been tested to the highest standards available for masonry. Our Woodfibre and EPS systems are tested according to ETAG004 and covered by a BBA certificate.

Warmshell for solid wood buildings
Warmshell is an ideal way in which to insulate and add weather protection to buildings constructed from cross-laminated timber (CLT) and other solid wood building methods.

These CLT structures are made up of large load-bearing engineered timber panels that are light, stable and very strong. But it is vital that a compatible, breathable insulation is chosen. Warmshell Woodfibre boards are a perfect match for CLT, or for tall buildings requiring better fire ratings, the Warmshell Class A boards can be used, all with the same choice of render finishes.