Innovative Insulation from Waste Wool
The Grinham Research Group at Harvard University has introduced a novel cladding tile made from waste wool, showcasing the potential of these architectural tiles. Unveiled at this year’s Oslo Architecture Triennale, these tiles were displayed at Sofienberg Church as a part of the main exhibition running from September 17 to October 1.
Transforming Waste into Resource
Wool’s inherent insulative, fire-resistant, and antibacterial properties caught the attention of the Grinham Research Group, prompting them to save this material from disposal in the agricultural and textile sectors. They developed a multi-layer tile for building exteriors, circumventing the need for invasive insulation upgrades. This development represents a step forward in both preserving natural resources and creating efficient building materials using recycled materials.
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The tiles feature a low-density back panel for insulation and a durable, weather-resistant outer panel, crafted from recycled wool. “We need pluralistic solutions that reflect the complexity of nature,” stated Jonathan Grinham, founder of Grinham Research Group. By converting waste wool into resilient cladding, this initiative retains biogenic carbon and enhances building longevity.
Revolutionary Manufacturing Process
The creation process begins by treating wool with an alkaline solution to break down keratin proteins, followed by mechanical separation. Heating keratin with citric acid then forms a rigid composite, bypassing petrochemical resin use. With about 1.95 billion kilograms of wool produced annually, the project addresses the unused portion that remains discarded and often discarded, presenting a prime example of sustainable building.
“Wool has lost its economic value, but not its material properties,” Grinham noted, as the group works on transforming it into a viable biocomposite for building use. This effort exemplifies how innovative thinking can lead to sustainable building solutions.
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A Showcase of Versatility
For the Triennale, preconsumer waste wool from Connecticut‘s American Woolen Company was used, featuring naturally and dyed fibers offering various tile colors. The tiles boast a fluted design but can be customized in myriad forms.
This innovation stands alongside other groundbreaking material developments, such as carbon-rich wall surfaces from forestry offcuts and self-repairing mycelium-based dresses. The presence of these architectural tiles at the Triennale highlights their significance in the realm of sustainable building materials.
Source: dezeen.com
Frequently asked questions
What are the benefits of the wool tiles introduced by Harvard?
The wool tiles have insulative, fire-resistant, and antibacterial properties, making them suitable for building exteriors. They also retain biogenic carbon and enhance building longevity. Crafted from recycled wool, the tiles are a step towards sustainable building materials.
How are the wool tiles manufactured?
The manufacturing process involves treating wool with an alkaline solution to break down keratin proteins, followed by mechanical separation. Heating keratin with citric acid forms a rigid composite, avoiding the use of petrochemical resin. This process makes use of otherwise discarded wool, turning it into a viable biocomposite.
Where were the wool tiles showcased?
The wool tiles were showcased at the Oslo Architecture Triennale, part of the main exhibition at Sofienberg Church from September 17 to October 1.