Desde tiempos remotos, la madera ha sido un recurso esencial para la humanidad. De las viviendas prehistóricas a los rascacielos modernos, su uso ha evolucionado junto con las tecnologías constructivas. Hoy, un avance científico podría reconfigurar su papel en la arquitectura: la creación de la supermadera, un material que combina la apariencia cálida de la madera natural con una resistencia superior a la del acero.
What is superwood?
Superwood is a material developed by researchers at the University of Maryland and commercialized by the American company InventWood. Its manufacturing process allows for wood that is ten times stronger and six times lighter than conventional wood, offering significant advantages in terms of efficiency and sustainability.
According to a study published in Nature, superwood has a strength-to-weight ratio superior to most metals and structural alloys, paving the way for applications in sectors as diverse as construction and the automotive industry.
The manufacturing process
The development of superwood is based on the molecular modification of natural wood:
- Removal of lignin, a component that provides color and rigidity.
- Boiling in water and chemicals to prepare the structure.
- Hot pressing at the cellular level, which compresses the cellulose fibers and generates hydrogen bonds, reinforcing the internal structure.
The result is a material capable of withstanding extreme impacts. In laboratory tests, it even resisted bullets without them penetrating.
Applications in construction and design
InventWood has started commercial production at its Frederick, Maryland plant and plans to launch two main lines:
- Superwood Exteriors: intended for external applications such as cladding and outdoor furniture, with high resistance to fire, moisture, and UV rays.
- Superwood Interiors: focused on interiors, with durable finishes for floors, furniture, and stairs.
In buildings, superwood would allow for structures up to four times lighter, reducing the weight of foundations and improving seismic resistance.
Environmental impact and sustainability
The production process of superwood generates 90% less carbon emissions than steel manufacturing. Additionally, wood acts as a long-term carbon storage system, reinforcing its role in combating climate change.
Although its current cost is higher than conventional wood, the company expects to reduce it with the expansion of production and the industrialization of the process.
Challenges for the industry
The widespread adoption of superwood poses challenges for the construction sector. According to Philip Oldfield, a professor of architecture at the University of New South Wales, the main barrier is not the material’s strength, but the caution of an industry that advances slowly towards structural changes.
The use of engineered woods has already proven to be competitive against steel and concrete, but pilot projects and technical training are still needed to accelerate its integration.
A turning point between nature and engineering
What began as research into transparent wood has resulted in a material capable of challenging the most resistant metals. With more than 140 registered patents, the project led by Liangbing Hu demonstrates the potential of science to reinvent traditional resources and open new possibilities in architecture and design.
The next phase will be its large-scale implementation. If it manages to overcome regulatory barriers and demonstrate its efficiency in real projects, superwood could become a viable option against steel or titanium, marking a before and after in sustainable construction.
