CleanFiber, formerly known as UltraCell Insulation, makes high performance building insulation from recycled corrugated cardboard. Their competitors make cellulose insulation from recycled newsprint, but are facing rapidly dwindling supplies as readers turn online. In contrast, their unique patented and proven process allows them to manufacture a superior product from corrugated cardboard at a lower cost than conventional cellulose insulation.
Location: United States, Massachusetts, Boston
Total raised: $28M
Investors 8
Funding Rounds 1
| Date | Series | Amount | Investors |
| 15.04.2024 | Series B | $28M | - |
Mentions in press and media 5
| Date | Title | Description |
| 27.04.2024 | The ‘valley of death’ for climate lies between early-stage funding and scaling up | Jonathan Strimling faced a dilemma. His company had spent nine years working on chemical processes that could turn old cardboard boxes into high-quality building insulation. The good news was the team had finally cracked it: CleanFiber’s te... |
| 18.04.2024 | Из использованных картонных коробок ученые смогли сделать теплоизоляцию | Использование картонных коробок для изоляции в промышленности кажется идеальным решением, за исключением одной проблемы: в гофрокоробках присутствуют загрязняющие вещества, такие как пластиковая лента, транспортные этикетки и металлические ... |
| 15.04.2024 | CleanFiber Raises $28M in Series B Funding | CleanFiber, a NYC-based materials science company, raised $28M in Series B funding. The round was led by Spring Lane Capital, with participation from Climate Innovation Capital, AXA IM Alts, Tokyu Construction/Global Brain, Ahlström Invest ... |
| 12.04.2024 | CleanFiber wants to turn millions of tons of cardboard boxes into insulation | For decades, building material companies have shredded old newspapers to create cellulose insulation. But as newspapers have declined, the cellulose insulation industry has found itself in a bind, chasing after dwindling supplies of raw mat... |
| 30.11.2022 | Transforming old cardboard boxes into insulation nets CleanFiber $10 million round | It’s the middle of the holiday season here in the U.S., that magical time between Thanksgiving and Christmas when stores are packed with bodies and porches are piled with packages. All those packages produce a lot of waste — anywhere from 3... |