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.