CleanFiber

High-performance, carbon-negative insulation from recycled cardboard

Blasdell, United States · Founded 2013 · $59.9M raised

Headquarters
Blasdell, New York
Employees
51–200
Founded
2013
Business Model
B2B
Total Funding
$59.9M
Last Round
$20.0M GrantOct 2024
Rounds
4

Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.

About

CleanFiber (formerly Ultracell Insulation) is a materials science company that manufactures high-performance, carbon-negative building insulation from recycled corrugated cardboard. Founded by veteran cellulose installers who foresaw dwindling newsprint supplies, CleanFiber spent over nine years perfecting its process before launching commercial production in 2020. Its state-of-the-art facility in Blasdell, New York produces over 3 million bags of certified insulation annually, offering a sustainable alternative to traditional fiberglass and mineral wool insulation at competitive pricing.

Summary

CleanFiber is a Climate Tech company based in Blasdell, United States, founded in 2013. It has raised $59.9M in total across 4 rounds, most recently a $20.0M Grant round in Oct 2024. Investors include U.S. Department of Energy Loan Programs Office, Spring Lane Capital and Aligned Climate Capital.

Tech & App Stack

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Funding History

GrantOct 2024
$20.0M

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Funding: Venture Round through Grant. Amounts, valuations, and investors where available.

Investors

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