Naturalorganic insulants

Fibre structure

Cellulose Mainly manufactured from recycled newspapers. Manufactured into fibres, batts or boards. Treated with fire retardant and pesticides.

Lambda value 0.038-0.040 W/mK.

Sheep's wool Must be treated with a boron and a fire retardant. Disposal may have to be at specified sites. Lambda value 0.040 W/mK.

Flax Treated with polyester and boron. Lambda value 0.037 W/mK.

Straw Heat treated and compressed into fibre boards. Treated with fire retardant and pesticide. It can be used as a wall material with a high thermal efficiency. In its present day form it should be much more reliable than the strawboard of the 1960s which had a tendency to germinate. Lambda value 0.037 W/mK.

Hemp Under development as a compressed insulation board. A highly eco-friendly material, grows without needing pesticides and produces no toxins. Initial tests have used hemp as a building material mixed with lime and placed like concrete. Test houses have proved as thermally efficient as identical well-insulated brick built houses built alongside the hemp examples.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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