Recycled insulation is a high-performance insulation that's made from scraps and clippings of recycled fibers. Ultra-Low VOC Insulation emits undetectable or ultra-low amounts of volatile organic compounds (VOCs) including formaldehyde.These types of insulation are suitable for residential and commercial use in the same places as fiberglass or mineral wool batts would be used—between open roof rafters, ceiling joists and wall studs