Insulation material

insulate the single-storey extension

The trend is for insulation material to be more environmentally-friendly. Little energy is required for the production of such materials, which are completely recyclable as well. Some of the more frequently-used eco-friendly insulation materials are listed here:

➊ Cellulose insulation
Insulating your house with cellulose insulation is especially suited for the insulation of walls (timber frame construction), floors and roofs. The cellulose insulation is blown in, and it has an insulation value that is comparable to the one of rock wool. Advantages are low price, good thermal insulation, fireproof and breathable. A disadvantage is that it is not suitable for damp circumstances.

➋ Ecological wood wool insulation
Wood wool is an eco-friendly material, fit for the insulation of floors, walls and roofs. The material is customisable and does not cause irritation to skin or lungs. Wood wool has a high heat storage capacity and excellent acoustic insulation qualities as well. Advantages are high heat storage capacity, damp-proof and vapour-permeable. A disadvantage is that it is more expensive than other materials of equal performance.

➌ Environmentally friendly cork insulation
Cork is a versatile material that is perfectly suitable to insulate roofs, floors and walls. Cork can be produced in the shape of granules (expanded cork granules) or boards. This material possesses great thermal and damp-proof properties. Moreover, it lasts very long. Advantages are that it is suited to damp areas and it has good acoustic insulation properties.

➍ Hemp insulation
Hemp is a sustainable insulation material that is completely compostable after usage. The hemp fibres have a woody structure, they are strong and can easily be produced as insulation blankets. With the exception of damp rooms, hemp is an appropriate material to insulate roofs, walls, facades and floors.
Advantages: moisture-regulating, completely recyclable
Disadvantages: not applicable in damp rooms
Price: £13 to 18 per square metre
Read more on hemp insulation on this page.

➎ Eco-friendly sheep’s wool insulation
Nowadays, the use of sheep’s wool is increasing as it has got excellent insulating and air-purifying capacities. Sheep’s wool is entirely recyclable, vapour-permeable and moisture-regulating too.
Advantages are high heat storage capacity, air-purifying properties and easy to customise.