Hempcrete
In new-build we install hempcrete in conjunction with a structural timber frame to form highly insulating walls that also provide a large thermal mass. The monolithic aspect of the wall means there’s no thermal bridging in mortar gaps and a consistent insulation from floor to ceiling. Hempcrete can be formed to any shape and applied to any vapour permeable pre-existing wall in retrofit applications. Lime or clay plasters can then be applied directly to the hempcrete internally and lime renders or stone/wood cladding externally.
Breathable roofs
Hempcrete along with other natural materials can be used to form a highly efficient roof insulation. Usually the hempcrete is placed between the rafters, supported by a breathable carrier board such as wood wool or reed boards. A breathable wood fibre board can be used as an airtight layer above the hempcrete. The benefit of this is airtightness, extra insulation and weather protection. The tiling batten is then placed above counter battens which create a breather gap over the roof to carry away any moisture.
Breathable floors
We lay insulated limecrete flooring systems in both new build and retrofit applications. They consist of two layers - a limecrete slab above a compacted, recycled foam glass insulation that provides a highly insulative, free-draining, load bearing sub-floor. The limecrete slab has reduced carbon costs compared to other materials as well as being vapour permeable and lightweight. The sub floor material has exceptional moisture management and load bearing qualities. We often install underfloor heating within the limecrete slabs.
Finishes
We offer a range of breathable finishes such as lime and clay plasters and lime renders. These vapour-permeable finishes aid the hempcrete in buffering internal humidity levels and offer extra thermal mass without compromising the breathability. Our skilled stone-masonry team can also offer stone cladding finishes or restoration and reparation of historic stone walls and any other stone masonry services.