Zonolite attic insulation was vermiculite intended for use as attic insulation. It was sold mainly in the northeastern, midwestern, and northwestern states with some sales occurring in California, Florida, Louisiana and Texas. This particular brand of insulation is considered hazardous because it was extracted from a mine in Libby, Montana. The vermiculite from this mine was later found to also contain asbestos. The product consists of loose granules that homeowners, installers, and anyone else visiting the attics where it was used, come into direct contact with the product. The Identifying the insulation in someone's home as containing asbestos and/or that the particular vermiculite in question came from the Libby mine is difficult with the currently available technology and yields uncertain results. The EPA advises homeowners to assume that the insulation contains asbestos and should be handled with care. If a homeowner doesn't know if the insulation in the home is Zonolite, it could possibly be identified from purchase documents, receipts, bags left in the attic, or product literature that was kept with household records.
The information provided in this site is general in nature and constitutes neither legal nor medical advice. If you are concerned that you or someone you know is at risk of an asbestos-related disease, please consult your physician and an attorney experienced in asbestos litigation cases.