Natural Insulation

    Thermo-Hemp

    Thermo-Hemp is a natural insulation material manufactured from hemp by Hock in Bavaria, Germany.
    Hemp grows up to a height of nearly 4 metres within a period of 100-120 days. Because the plants shade the soil, no chemical protection or toxic additives are required for hemp cultivation. As well as having low embodied energy during manufacture, hemp is carbon negative as it locks in carbon during its growth.

    Hemp is one of the oldest cultivated plants on earth, hemp is not only used as an excellent insulating material, but also for clothing, paper, oil, fuel, food and other construction materials.

    With a thermal conductivity of 0.038W/(m.k), a density of 38kg/M3 and thicknesses ranging from 40mm to 200mm, Thermo-Hemp is the perfect solution for wall, floor and roof applications in both and new and old buildings.

    • Heathier for you - made from natural hemp plant fibres grown without any chemicals or toxic additives. Thermo-Hemp is totally safe and easy for you to install.
    • Healthier for your home - its hygroscopic properties hemp regulate humdity offsetting condensation risk. What’s more it’s naturally resistant to mould growth and insect attack and has outstanding fire resistance.
    • Healthier for the environment - as well as having low embodied energy during manufacture, hemp is carbon negative as it locks in carbon during it’s growth.
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    TECHNICAL DETAILS

    Property Details
    Delivery form batts or rolls (only batts stocked in the UK and Ireland).
    Thickness (mm) 40/50/60/80/100/140/200
    Length x width (mm) 580 x 1200/375 x 1200
    Bulk density (kg/m3) 38
    Components 82-85% hemp fibres, 10-15% bi-component fibres, 3-5% soda for fireproofing
    Thermal conductivity D(W/mK) 0.038
    Water Vapour Diffusion Resistance Coefficient 1 - 2.
    Length Related Flow Resistance 6.0 kPa.s/m2.
    Maximum Processing Temperature 120C.
    Sensitivity to mould fungus (accoridng to EN 1SO 856): No mould fungus growth identifiable.
    production process Dry
    European Technical Approval AbZ No. Z23.16-1577
    Specific Thermal Capacity 1600 J/(kg.K).
    Usage Interior only.

    Please download the Theo Thermo-Hemp Installation Guide

    Fields of Application

    • Insulation between the rafters.
    • Insulation on the rafters and between supporting rafters.
    • Insulation under the rafters.
    • Insulation of wooden joists in ceilings.
    • Insulation of the internal and external walls in timber frame, and post and beam constructions.
    • Insulation of metal studded constructions or partitions.
    • Internal dry-lining insulation in the refurbishment of masonary/solid constructions.
    • Exterior insulation of walls with a well ventilated air layer.
    • Thermo-Hemp should only be installed in a structure that is diffusion-open.
    • All structures including roofs & walls should be diffusion-open from the inside to the outside.
    • The lower the vapour sealing effect achieved, the more this natural insulation material can deliver its range of advantages.
    • Ensure there is adequate ventilation during installation.
    • To ensure the installation is achieved without gaps (joints) please oversize the insulation with an extra 20-30mm relative to the void to be insulated.
    • Ensure a suitable sealed vapour check is applied and that the construction is sealed airtightly immediately after the insulation is installed.

    Measuring Up

    Deciding On Your Dimensions

    The dimensions of insulating material required are determined by the construction dimensions. To determine this, the space between rafters should be measured & 2-3cm should be added to the final measurements. These additional centimetres are used to avoid a heat build-up and will also allow for the clamping of the mats. Where the thickness of the insulation material is less than 100mm, the mats should also be tucked.

    Tool Requirements

    Small Quantities

    Thermo-Hemp can be cut to size with simple cutting tools like an insulating cutter. A long blade with a wave-like cut gives the best results.

    Large Quantities

    For this purpose an electric-handsaw with a wave-cut blade will give you the best results. (Bosh GFZ 16-35 AC).