low carbon
Low carbon - locks-up 322kg of CO2
Insulation System
Warmshell, the modern answer to breathable insulation for interior, exterior and roofing.
No guess work
No guess work – a system that works together
tried, tested
Tried, tested, certified and proven to perform
moisture control
Breathable and moisture buffering
warm cool
Warm in Winter, cooler in summer
Sound absorbing
Sound-absorbing - creating more peaceful spaces.
Three complete systems for sustainable External, Internal and Roof Insulation designed for the UK climate.
The Warmshell system
The complete, comprehensive method for insulation
Warmshell comprises three parts, our wood fibre insulation boards, dedicated fixings and adhesives depending on application and our lime products; plaster for internal use and render for external finishes. Together they create a breathable, healthy, insulated space. One that will keep your space warm in the winter and cooler in the summer.
It’s a fantastic natural alternative with great low carbon option as the wood fibre boards actually embody more carbon that it takes to produce them.
The versatile system
Refurbishment, retrofit, renovation, and repair
Perfect for refurbishment, retrofit, renovation, and repair in residential and commercial spaces, Warmshell can be fitted to all surfaces from timber frame to brick and masonry. You can use it internally, externally and in a roof space.
Warmshell U Value Calculator
Use this calculator to compare U Values of different thicknesses of Warmshell.
So, if you want lower energy bills, a comfortable, healthy space and peace of mind, then it has to be Warmshell.
Benefits of Warmshell
- Warmshell is the natural, affordable, highly effective wall insulation system.
Designed as a complete system safe, breathable and sustainable. Fewer gaps and components makes a more effective system, easy to install and eliminate thermal bridges, also dramatically improves airtightness.
- No other type of insulation system brings quite so many benefits.
One of the most compelling things about Warmshell is its combination of benefits; Thermal, Acoustic, moisture control, real word testing, warranty, and unparalleled technical support
- The natural, healthy solution
Warmshell is the natural solution. It uses natural components – primarily wood fibre and lime mortars – with no harmful chemicals or adhesives. The system stores biogenic carbon for its lifespan, useful for low carbon retrofits.
- Snug and warm in the winter
The combination of natural wood fibre and hydraulic lime render embedded with recycled glass beads brings outstanding insulating properties – keeping you warm and saving on heating bills.
- Comfortable and cool in the summer
As well as locking heat in during the winter, Warmshell also keeps it out during the summer – so your property remains cool and comfortable.
Warmshell Woodfibre has remarkable phase-shift properties, exploiting the natural ability of wood to store heat, which means unlike synthetic insulations it protects you from summer overheating.
- Passivhaus principles
Warmshell lives up to the Passivhaus design principles – reducing the need for space heating and cooling and bringing excellent indoor air quality and comfort levels.
- Superior acoustic insulation
Warmshell Woodfibre offers outstanding sound absorption properties – providing superior protection from both airborne and impact noise.
- The benefits of breathability
With Warmshell, your walls can still ‘breathe’, allowing trapped moisture to escape. This reduces the risks of condensation, damp, and makes your insulation even more effective.
- Sustainably sourced, and environmentally sound
Lime Green's natural lime mortars are manufactured right here in the UK, and their wood fibre insulation panels are sourced from sustainable European forests certified to FSC (Forest Stewardship Council) standards.
- Tried, tested and fully accredited
Warmshell is fully tested and holds relevant certificates, it has also been independently monitored by the Society for the Protection of Ancient Buildings (SPAB), Historic England. As a complete system, Lime Green are unique in being able to offer Warmshell as a fully tested set of components.
- Reassuring standards of fire protection
Compared to petrochemical-based systems, Warmshell’s carbonisation properties limit the speed at which fire can spread – and its fire protection qualities have been classified by a UKAS approved fire testing lab.
- Surprisingly affordable
As well as being highly-effective, Warmshell is also very affordable – we’d urge you to compare our prices with those of any petrochemical-based alternatives.