CleanFiber manufactures spray‑in cellulose insulation from recycled corrugated cardboard using a patented wet‑separation process that removes dust and contaminants. The fibers are infused with an all‑borate liquid fire retardant, delivering uniform fire resistance, low‑dust application, and high coverage while meeting ASTM‑C739 standards. The product offers contractors a clean, high‑performance, and price‑stable alternative to traditional newsprint‑based insulation.
Funding
$34M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Founders
Product
Problem
Conventional cellulose insulation often generates excessive dust, contains contaminants that cause equipment clogging, and relies on blended fire retardants that can emit ammonia odors or cause corrosion. Additionally, supply constraints and rising costs of newsprint‑based fibers limit availability and price stability for installers.
Solution
CleanFiber produces cellulose insulation from recycled corrugated cardboard using a proprietary wet‑separation process that isolates clean fibers and removes debris. An all‑borate liquid fire retardant is infused directly into the fiber walls, delivering effective fire protection without the drawbacks of ammonium‑based additives. The resulting product offers low dust generation, high coverage, and consistent spray performance, enabling faster, cleaner installations. By sourcing abundant cardboard from e‑commerce returns, CleanFiber maintains a stable, long‑term supply and competitive pricing. The insulation also meets ASTM‑C739 fire safety standards and provides acoustic damping benefits.
Target Audience
The primary customers are residential and commercial insulation contractors, building‑envelope specialists, and HVAC firms seeking a clean, high‑performance cellulose product for spray‑in installations.
Features
- Recycled corrugated cardboard feedstock processed via a patented wet‑separation technique that eliminates dust and foreign particles
- Direct infusion of an all‑borate liquid fire retardant into each fiber, ensuring uniform fire resistance and eliminating ammonia odor or corrosion risks
- Low‑dust formulation that reduces cleanup time and improves installer safety on site
- High fiber density delivers superior thermal R‑value per inch and excellent coverage, minimizing material waste
- Consistent spray characteristics prevent nozzle clogging even at higher blower settings, facilitating faster application
- Acoustic damping properties that reduce interior noise transmission
- Certified to ASTM‑C739 for smoldering and flame propagation resistance
- Stable supply chain sourced from high‑volume e‑commerce cardboard streams, supporting long‑term price stability