£21.57per 20kg
Natural insulation that breathes.
The Warmshell range of woodfibre insulation boards and batts provides outstanding thermal performance without sacrificing breathability. Designed for use alongside lime plasters and renders, Warmshell creates a fully vapour-open building envelope.
Sustainable insulation for traditional and modern buildings Why woodfibre insulation?
Woodfibre is manufactured from sustainably sourced timber waste — a natural, renewable resource with a low embodied carbon footprint. Unlike synthetic insulation boards, woodfibre is vapour-permeable, which means it works in harmony with breathable lime finishes rather than trapping moisture.
Key properties
Vapour-open — compatible with lime plasters and renders
High thermal mass — moderates temperature fluctuations for summer comfort
Sustainable — manufactured from certified timber waste
Class B fire rating when used as part of an approved system
Excellent acoustic performance
Applications
External wall insulation (EWI) with lime render overcoat
Internal wall insulation for historic buildings
Roof insulation between and below rafters
Floor insulation above ground-bearing slabs
Warmshell Woodfibre Insulation Systems
Warmshell is a natural internal wall insulation system designed to improve the thermal performance of solid masonry walls from the inside. It uses breathable materials that lock up carbon, help regulate moisture and create a healthier indoor environment
Breathable
This natural internal wall insulation system improves comfort and reduces heat loss by combining breathable woodfibre and lime.
Sustainability
Because Lime Green use sustainably grown wood, Warmshell is a very low carbon method of retrofit.
Warmshell External provides a robust, breathable insulation layer for new and existing buildings. Finished with Lime Green's high-performance lime renders, it offers superior durability and weather protection.
Built to last
The wide choice of finishes means you achieve the look you want whether that's contemporary, rustic or traditional. Lime Green's renders are so good at resisting stains and mould, your property will look great for decades to come.
Efficient
An ideal way to upgrade the thermal performance of your home.
Warmshell Products
Designed to work with lime
The Warmshell system is engineered as an integrated solution — insulation board, mesh coat, and lime render working together to deliver performance, durability, and breathability.