Wood, It Be Good for Builders to Use Timber for Carbon Sinks?
Dr. James J. S. Johnson
Is it a safe and healthy practice to build using lots of cellulose-based timber, or not?
Some French and Norwegian policy-makers say yes (i.e., “oui”), while some British policy-makers disagree.(1)
The French support their enthusiasm for constructing buildings with lots of wood, assuming that doing so somehow helps save the planet from manmade global warming, i.e., “timber construction … [helps] trees [to] lock up climate-heating carbon emissions.”(1)
In France, President Macron has ruled all new publicly-funded buildings should be at least 50% timber or other natural materials by 2022. And in Norway a new “ply-scraper” stretches fully 18 storeys – that’s the height recently deemed safe by standards authorities in North America.(1)
The British, however, recall how flammable wood building are, as illustrated in the Grenfell high-rise tragedy three years ago (June 14, 2017), when “the fire at the 24-storey tower killed 72 people”.(2) The investigation into the fiery tragedy continues in England.(2),(3)
Fears of another Grenfell-type fire are stunting the spread of wood-based buildings in England. The government is planning to reduce the maximum height of wood-framed buildings from six storeys to four. The move’s been recommended by the emergency services in order to reduce fire risk.(1)
So, for the construction industry, what is the real engineering science—and how does that construction engineering science relate to the (supposed) climatology concerns of those who promote manmade “global warming” alarmism?
Members of the timber trade say the Government in England has misunderstood the science behind timber construction. They say timber walls can be made safe by methods including flame-retardant treatments and fire-resistant claddings. They point out that it is futile planting millions of trees if they are left to rot and release the CO2 they previously captured.(1)
The environmentalist appeal of timber-based construction is pitched using a mathematical model of “carbon sink” estimates, to advocate wood-based buildings as incarcerating huge amounts of supposedly scary carbon dioxide.
This faddish notion is advocated by a formal study titled “Buildings as a Global Carbon Sink”, that sings the praise of climate-protecting timber buildings.(4),(5)
A material revolution replacing cement and steel in urban construction by wood can have double benefits for climate stabilization, a new study shows. First, it can avoid greenhouse gas emissions from cement and steel production. Second, it can turn buildings into a carbon sink as they store the CO2 taken up from the air by trees that are harvested and used as engineered timber. However while the required amount of timber harvest is available in theory, such an upscaling would clearly need most careful, sustainable forest management and governance, the international team of authors stresses.(4)
This “carbon sink” construction model may be politically fashionable (in global warming circles), but whether it is scientifically practical—enough to fit the engineering realities of the real world—remains to be seen.
However, based upon the real-world science that Biblical creation scientists have clarified, regarding how climate dynamics really operate, it is unlikely that this “carbon sink” engineering is any more reliable than the climatology assumptions it is based upon.(5),(6)
- Harrabin, R. 2020. Grenfell Fears Prevent Timber Building Boom. BBC News (May 25, 2020), posted at https://www.bbc.com/news/business-52771270?intlink_from_url=https://www.bbc.com/news/science_and_environment&link_location=live-reporting-story .
- “On 15 June 2017, (then) Prime Minister Theresa May announced a Public Inquiry into the tragic fire at Grenfell Tower which occurred on the previous evening. In essence, the Grenfell Tower Inquiry is designed to examine the circumstances leading up to and surrounding the blaze.” Quoting Staff writer. 2020. Resumption Update Issued for Grenfell Public Inquiry in Wake of Consultation. Fire Safety Matters Security (May 26, 2020). Posted at fsmatters.com at https://www.fsmatters.com/Resumption-update-issued-for-Grenfell-Inquiry .
- Staff writer, R. 2020. Grenfell Tower Inquiry on Hold until July at Earliest amid Coronavirus Pandemic. BBC News (May 19, 2020), posted at https://www.bbc.com/news/uk-52724841 .
- Staff writer, 2020. Buildings can become a global CO2 sink if made out of wood instead of cement and steel. Potsdam Institute for Climate Impact Research. Posted at https://www.pik-potsdam.de/news/press-releases/buildings-can-become-a-global-co2-sink-if-made-out-of-wood-instead-of-cement-and-steel . Accessed may 26, 2020.
- Churkina, G., A. Organschi, A., et al. 2020. Buildings as a Global Carbon Sink. Nature Sustainability.3:269–276, posted at https://doi.org/10.1038/s41893-019-0462-4 .
- Hebert, J. 2019. The Climate Change Conflict: Keeping Cool Over Global Warming –available at ICR. See also 1st Timothy 6:20-21a.