KLH, by the nature of its product, is a specialist in
We promote the use of timber in lieu of concrete and steel, as
timber is the only truly renewable construction material, with the
lowest energy consumption of any building material across its
lifecycle. Using cross-laminated timber will reduce CO2
because trees act as a carbon 'sink' removing CO2 from the
atmosphere, releasing oxygen and sequestering/storing carbon.
1m3 (480-500kg/m3) of KLH panels will remove approximately 0.8
tonnes of CO2. The CO2 is absorbed by the timber and
ultimately the carbon stored/sequestered (and oxygen released).
Therefore, 1m3 of KLH panels will have approximately
240-250kg of 'lock-in'carbon.
In comparison, the production of Portland Cement results in
around 870kg of CO2 emissions per tonne of cement ("The cement
industry's role in climate change", Dr Robert McCaffrey, Global
Cement & Lime Magazine); the production of steel results
in around 1.75 tonnes of CO2 emissions per tonne of steel (The
Carbon Trust); and substituting GGBS Cement - ground
granulated blastfurnace slag (typical mix 40 - 50%) - may reduce
CO2 emissions in concrete, but only by around 100 - 130kg per tonne
The use of timber in the construction of buildings can achieve
negative net CO2 emissions.
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