Made of 100% non-woven polypropylene to enable long-term use. Helps minimize dust levels at job sites. Suitable for damp or wet spray installations. ADO Products Insulweb is strong high-grade non-woven polypropylene that works well for wet or damp spray installations. Fabric can help reduce dust at the job site. This product is recommended for knee walls, ceilings, sound walls and many other applications.