CleanFiber
BLASDELL, NY · Manufacturing, Other · 35 employees
CleanFiber™ makes high-performance cellulose insulation from recycled corrugated cardboard boxes and other clean sources of high quality fiber. The company was formerly known as Ultracell Insulation and was founded by veteran cellulose installers, who wanted to see this industry thrive despite declining supplies of old newsprint (which is the primary feedstock of the industry today). CleanFiber
Funding history
- Funding Round — $34.0M — Oct 2025
- Funding Round — $6.5M — Oct 2025
- Funding Round — $28.2M — Apr 2024
- Series series b — $28.0M — Apr 2024
- Series seed — $4.3M — Oct 2023
Recent signals
- Oct 02, 2025: Raised $34.0M
- Oct 02, 2025: Raised $6.5M
- Jan 27, 2025: CleanFiber Names Sami Rahman as First President
- Apr 12, 2024: Raised $28.2M
- Apr 12, 2024: Raised $28.0M in Series series b
- Oct 12, 2023: Raised $4.3M in Series seed
- Jun 02, 2023: Raised $5.0M in Series seed
- May 09, 2023: Raised $1.7M in Series seed
See plans & pricing → Track CleanFiber’s funding, hiring, and signals — with verified contacts — on Fundz.