How much CO2 can timber construction store per cubic metre?

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Timber Construction's Carbon Storage Capacity Per Cubic Metre

Each cubic metre of timber utilised in construction has the capacity to store a carbon equivalent of over 900 kilogrammes of CO2 emissions. This significant carbon sequestration is a key environmental advantage of using timber, especially when contrasted with traditional materials like concrete and steel, whose production contributes substantially to global fossil-fuel consumption and greenhouse gas emissions.
Carbon Sequestration in Timber

Timber acts as a carbon sink by storing the carbon dioxide absorbed by trees during their growth. According to Professor Andy Buchanan, an expert in timber design at the University of Canterbury in New Zealand, every cubic metre of wood used in construction effectively locks away more than 900 kg of CO2. This process aids in reducing overall emissions by preventing the release of stored carbon into the atmosphere.
Environmental Impact of Traditional Materials

The environmental footprint of concrete and steel production is substantial, accounting for approximately 16 per cent of global fossil-fuel consumption, and potentially up to 30 per cent when considering transportation and assembly. The manufacturing processes for these materials are energy-intensive and generate significant greenhouse gas emissions. Furthermore, concrete production is linked to issues such as rampant sand mining and contributes to urban heat island effects and flooding.
Advancements in Engineered Wood

Recent innovations in engineered wood products, including glue-laminated timber (glulam), laminated veneer lumber (LVL), and cross-laminated timber (CLT), have enabled the construction of increasingly taller and more complex wooden structures. These engineered materials offer improved strength and durability, making timber a viable option for residential and commercial projects, including high-rise buildings, thereby facilitating greater adoption of this carbon-sequestering material.
Global Trend Towards Timber Construction

There is a growing global interest in constructing tall wooden buildings, with projects emerging in cities like Amsterdam, Vancouver, and Tokyo. This shift is largely driven by environmental concerns and supported by advancements in wood technology and the relaxation of building codes. While traditional construction predominantly uses concrete and steel, the environmental benefits of timber are leading to its increased consideration and implementation worldwide.

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How much CO2 can timber construction store per cubic metre?

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