Indoor Vertical Farming Discovers A New Company That Is Not Sheepish About Its Wool Insulation

While fiberglass and mineral wool have been around for decades, a new generation of manufacturers is looking to new materials that might be less manufacturing-intensive. One of these, Havelock Wool, is drawing on what founder and CEO Andrew Legge sees as a more sustainable option.

The company’s insulation is made using wool imported from sheep-farming operations in New Zealand. He says wool is used widely across the residential building sector both in that country and Australia.

Legge explains that wool insulation offers multiple advantages for environmentally oriented homeowners. The material has evolved over millennia to be a natural insulator, he notes, and it incorporates a protein called keratin which doesn’t support mold growth. Additionally, he says, wool absorbs a number of airborne toxins, including formaldehyde.

Havelock Wool’s batts and blown-in insulation come at a premium; Legge says they’re priced similarly to closed-cell spray-foam products. However, he adds, wool is very easy to handle, requiring no extra experience for anyone familiar with fiberglass installation.

Sustainability is at the heart of the value proposition Legge puts forward as a wool-insulation advocate. The manufacturing process requires no heat and is centered around 60-year-old wool carding machines, as opposed to large-scale industrial plants. And when asked about the methane produced by the sheep supplying the company’s wool, Legge has a response quickly at hand.

“We’re a byproduct of a different industry—you’re raising those animals to eat them, so we’re very comfortable with the argument that the methane isn’t attributable to the insulation,” he says. “If people stop eating sheep and lamb, we won’t have a business.”