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Whether rising to the highest room of the tallest tower in a Disney-esque castle, giving an admirer the chance to confess their love on an apartment building fire escape, or connecting a basement or attic room with a decorative period feature, there’s something unavoidably romantic about spiral staircases. But there’s more function behind these coiling forms than just their good looks.

One common-held theory is that spiral staircases were first installed in historic castles as vertical baffles, tiring out enemy infiltrators before they could make it to the top. This is why – it is said – many are set to turn clockwise on the ascent, so attackers have a smaller arc for swinging weapons (mostly held in right hands) than defenders making their descent.

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At a time when sustainability and ESG (environmental, social, and governance) concerns are prevalent, there is a crucial need to focus on a sector that accounts for 38% of all global CO₂ emissions and consumes 30% of global resources: the construction industry. In 2022, at COP27, the United Nations announced the Clean Construction Accelerator, a program with actions designed to reduce greenhouse gas production by up to 50% by 2030. A report by ARUP and the World Business Council for Sustainable Development suggests that half of building emissions come from embodied carbon, which is generated in the manufacturing and transportation of materials, not just in construction sites and buildings themselves. It is precisely in this scenario that we see an opportunity for the sector. What is the only renewable material in construction that retains carbon instead of emitting it? Wood.

When thinking of wood, another question tends to arise: "How can wood be sustainable if we need to cut down trees for it?” Ana Belizário, the Commercial Director of Urbem, a large-scale Brazilian mass timber industry, explains throughout this article how planting trees specifically for consumption is not only a sustainable alternative but also an excellent practice in combating the climate crisis and can regenerate the construction sector.