Mammoth polyester insulation is the modern choice in creating a healthy, energy-efficient homes and buildings.Made in New Zealand from soft, non-itch polyester it includes fibres from recycled plastic bottles to turn waste into warmth. The polyester fibres used in Mammoth Insulation are heat-bonded together so the insulation is free of glues, resins, formaldehyde and insecticides. It is non-irritant and non-toxic so you can handle it without protective clothing.Mammoth Insulation is available in low-density blankets for ceilings and lofts or medium density, self-supporting sections for use underfloor and in wall cavities. The medium density products are designed for a superior friction-fit without gaps, creases or folds that can compromise thermal performance.All Mammoth insulation products carry a 50 year warranty for assured performance and provide excellent life-cycle value.