Knauf EcoRoll® Unfaced Fiberglass Insulation with ECOSE® Technology is a leading sustainable insulation. These batts are bonded with the revolutionary, industry-transforming, plant-based ECOSE® Technology. They are validated by UL Environment as formaldehyde free, and they contain no Red List chemicals. Made with a high degree of recycled glass, these insulation rolls cut easily for faster installation with low dust and low hassle. Like every Knauf Insulation roll, EcoRoll® is resilient and recovers quickly out of the package for a snug fit. Install Knauf Insulation in your home and stay comfortable year-round.