Finished Attic With Vermiculite

When this mineral is put in an oven it expands like popcorn.

Finished attic with vermiculite.

My attic has vermiculite so i have to assume there is asbestos. Vermiculite was a common attic insulation product sold from the late 1920s to the early 1990s. Five years ago we decided to insulate the attic and the recommendation we heard sounded good that it was best to lay fiberglass over it. Homeowners and buyers often want to know if they should leave the.

Vermiculite is a mineral that was used for insulation. I m focusing on the attic. Unfortunately almost all vermiculite insulation contains asbestos and is unsafe when disturbed. Came from a mine in libby montana sold under the name zonolite.

The space between the gables. Expanded forms of vermiculite are light weight fire resistant and odorless making it an ideal material used for attic and wall insulation inside houses and buildings. Vermiculite is a natural insulation material but it s one that you definitely don t want to have in your attic. So we did that but incompletely.

I live in maryland and want to retrofit my house built in 1938. Up to 85 percent of all vermiculite insulation in the u s. If your home was built before 1990 you might have vermiculite insulation in your walls or attic. The epa says that vermiculite insulation which is the pebbly stuff found in attics of many older homes is only risky if it contains more than one percent asbestos.

It could be purchased locally and could be installed by contractor or homeowner. Vermiculite is a naturally occurring mineral that when heated to a high temperature expands to as much as 8 to 30 times its original size.