Insulation ~ Wood Fibreboard
Made from pulped wood, wood fibreboard is potentially a local material for all. As such the challenges and costs (both financial and environmental) of transportation can be more easily managed than some alternatives.
Description
The pulped wood is held together to form boards, the adhesive used will influence the sustainability and environmental impact of the specific board. A resin adhesive is sometimes used to bind fibres, in some the natural lignin present among the fibres fulfils this role, or the fibres can be interwoven.
Features
- Non-toxic (usually) & non-irritating.
- Biodegradable.
- Renewable.
- Adaptable. Can be used between wooden studs or in construction, for example external boarding protected by a coat of render.
- Self-supporting. Wood fibreboard is rigid.
Performance
Wood external fibreboards at 250 kgs/m³ have a thermal conductivity or K value of 0.049 W/m.K.
(Watts per meter Kelvin – a lower value is a better result)
Cost
Approximately £30m2 - bear in mind that this is both a structural and insulating material.
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References
http://www.natureproinsulation.co.uk/external_board.htm
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