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Warmshell - specifically designed for new timber frame buildings, or to upgrade an existing timber frame building.


Unlike standard methods of timber frame insulation where the insulation infills just between timbers, Warmshell adds an additional layer to the outside of the structure to completely encase the property. This offers a number of significant advantages. From an insulation perspective, this makes Warmshell highly efficient. Essentially you can expect a Warmshell wall to be warmer, more airtight, have better acoustics than 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 to be installed as part of the build.

Warmshell insulation also significantly limits solar gain over standard insulation types, giving consistency of internal temperature throughout the year. And by providing no opportunity for cold air to migrate inward through timber, brickwork or steel used in the exterior wall, Warmshell also virtually eliminates thermal bridging, which can seriously compromise the energy efficiency of a building.

Warmshell consists of just five key components, making the construction process straightforward, with no special training required by contractors. Available as eco-friendly wood fibre board, you can choose which insulation thickness to use to suit your budget and specification.

Warmshell Timber Frame insulation can be completed using our many different coloured renders in several textures to give you the look you want. And as a lime-based render is used to finish, it won’t shrink or crack over time so the outside of your home will stay looking good.

Warmshell has been tested extensively by independent organisations and has been found to meet the highest British and European standards.

Find out more
To find out how you can use Warmshell Timber Frame insulation to meet your development or self-build needs, call our team at 01469 531 227 or email