Monday, August 4, 2025
In a groundbreaking innovation, US-based company InventWood has unveiled Superwood, an engineered timber product that is not only stronger than steel but also boasts bullet-resistant properties. This game-changing material could redefine industries such as construction, cladding, and even military applications. As sustainability becomes a priority in the construction industry, Superwood presents a climate-friendly alternative to traditional, carbon-heavy materials.
Superwood is an engineered timber created through a complex process that significantly enhances its strength. During laboratory tests, InventWood fired a bullet-like projectile at several types of wood samples. While traditional timber was easily penetrated, the Superwood version remained intact.
As Alex Lau, co-founder and executive chairman of InventWood, explained to the BBC: “Clad it with a new type of modified wood, and it might” withstand a bullet. This is a major leap forward in the timber industry, where traditional wood’s limitations in structural integrity and durability often hold it back in demanding applications. Lau went on to add that while Superwood might not yet withstand bomb impacts, its potential use in military-grade shelters could soon be realised.
The creation of Superwood involves the chemical removal of lignin, a polymer in wood, followed by compression. This reduces the timber’s volume by 80%, thereby enhancing its natural strength. The process also creates additional hydrogen bonds within the material, which increases its structural integrity without sacrificing its natural aesthetic qualities.
According to Lau, this method is akin to “massaging the wood,” where imperfections are squeezed out, leaving only a stronger, more compact version of the material.
InventWood has refined its production techniques, reducing the production time from over a week to just a few hours. Superwood is currently produced from poplar trees, though there are plans to explore bamboo as a more sustainable feedstock, offering a faster-growing alternative to wood. Bamboo, Lau mentions, can be harvested in just 3-4 years, offering an efficient way to sequester carbon from the atmosphere.
As the construction industry seeks to decarbonise, Superwood presents a clear advantage over traditional materials such as concrete, which have a high carbon footprint. Conventional wood, while renewable, faces challenges in structural applications due to issues with moisture, insects, and overall strength. Superwood addresses these issues head-on by providing an engineered solution that offers superior durability and resistance to environmental factors.
By utilising timber in an innovative way, Superwood also helps combat deforestation. As demand for sustainable alternatives grows, this new type of engineered wood could help mitigate the need for tropical hardwoods from at-risk forests.
Superwood is part of a growing movement in the woodworking industry aimed at enhancing the utility of timber-based construction. Alongside Superwood, other engineered timber products such as cross-laminated timber (CLT) and glue-laminated timber (glulam) are gaining popularity due to their strength and versatility.
Superwood isn’t designed to compete with these existing products but can serve as an additional option, particularly for external cladding or aesthetically pleasing, durable finishing layers. In climates like the UK, however, Morwenna Spear, a research fellow at Bangor University’s BioComposites Centre, pointed out the need for further data on how the product will perform through the repeated wet-dry cycles often seen in the region.
Other companies in the field are also making strides. German firm Pollmeier has created BauBuche, a laminated veneer made from beech—a species rarely used in construction. 3RT, an Australian company, replicates the properties of high-value hardwoods using thin veneer sheets, even from low-value trees. The increased diversity of engineered timber products gives architects and designers a broader palette of options.
Despite the advancements in engineered wood, challenges remain. Michael Ramage, director of the Centre for Natural Material Innovation, noted that financial and regulatory factors continue to favour traditional materials like concrete. He questioned whether a mortgage or insurance premiums for a timber-based building would be comparable to those for concrete structures.
Fire resistance is another concern. However, Superwood has passed fire resistance tests and has shown impressive resilience against wood-eating insects. Although Superwood is more difficult to work with than natural timber, it can be processed using carbide or diamond-tipped blades, which makes it adaptable for industry needs.
Superwood joins a growing list of engineered timber products transforming the construction and woodworking industries. With its bulletproof capabilities, durability, and carbon-friendly production process, it may soon become a sought-after material for everything from military shelters to residential cladding.
As the market for sustainable construction materials continues to expand, Superwood and other engineered timber products will likely play an integral role in reducing the carbon footprint of buildings, while offering enhanced strength and resilience in a variety of applications. The future of timber-based construction seems brighter than ever, with innovative solutions like Superwood leading the way.
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