Polyester Acoustic wadding is thermally bonded insulation Materials manufactured from polyester fibre. The products are created from natural fibres. These are known for their durability and reliable performance. The product is made at a heavy density. Generally, the heavier the density the higher the soundproofing performance. Polyester Wadding will not settle or reduce its performance over time (50Years durability Warranty) and is not affected by moisture, mould or mildew, and is naturally resistant to insect and vermin attack... Polyester wadding products are completely safe and user-friendly so no protective clothing is required to handle or install the product... Polyester wadding contains 45-85 % previously recycled polyester fibre (from PET Plastic) and is reusable and recyclable at end of life – supporting the philosophies of Environmentally Sustainable Design (ESD). Products also have a Zero Ozone Depleting (ODP) rating, contain negligible Volatile Organic Compounds (VOC’s) and 80% of the fibres` that go into Polyester Batts are recycled from plastic bags & other packaging materials, so they are safer for the planet too.