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
- Venture - Series Unknown — $34.0M — Oct 2025
- Venture - Series Unknown — $6.5M — Oct 2025
- Venture - Series Unknown — $28.2M — Apr 2024
- Series B — $28.0M — Apr 2024
- Seed — $4.3M — Oct 2023
Recent signals
- Oct 02, 2025: Raised $34.0M in Venture - Series Unknown
- Oct 02, 2025: Raised $6.5M in Venture - Series Unknown
- Jan 27, 2025: CleanFiber Names Sami Rahman as First President
- Apr 12, 2024: Raised $28.2M in Venture - Series Unknown
- Apr 12, 2024: Raised $28.0M in Series B
- Oct 12, 2023: Raised $4.3M in Seed
- Jun 02, 2023: Raised $5.0M in Seed
- May 09, 2023: Raised $1.7M in Seed
See plans & pricing → Track CleanFiber’s funding, hiring, and signals — with verified contacts — on Fundz.