Vermiculite In Attic Years Used

While some believe the substance to be safe a 2008 class action lawsuit against w r.

Vermiculite in attic years used. I occasionally worked in the vermiculite. Sizes of vermiculite products range from very fine particles to large coarse pieces nearly an inch long. We have lived in this house for 40 years. It has vermiculite insulation in the attic.

Vermiculite insulation and asbestos vermiculite. Vermiculite is a mineral used in a number of consumer products including home insulation. Vermiculite is a mineral that was used for insulation. Grace owner of the montana mine that produced zonolite came to a different conclusion.

Some vermiculite produced at libby mine in montana from the 1920s until 1990 sold primarily under the brand name zonolite has been found to contain asbestos. I installed sofett covers and did electrical rewiring over the 30 to 40 years i have lived here. The mine was closed in 1990. For years zonolite was used in the insulation of homes throughout the united states.

The majority of the vermiculite used worldwide was from a mine in libby montana owned and operated since 1963 by w r. Concerns about asbestos contaminated vermiculite insulation. Up to 85 percent of all vermiculite insulation in the u s. As well as being rich in vermiculite this mine had the misfortune of having a deposit of tremolite a type of asbestos.

The expanded vermiculite is a light weight fire resistant and odorless material and has been used in numerous products including insulation for attics and walls. Came from a mine in libby montana sold under the name zonolite.