Finished Attic With Vermiculite

Up to 85 percent of all vermiculite insulation in the u s.

Finished attic with vermiculite.

I live in maryland and want to retrofit my house built in 1938. That s good news because most zonolite a type of vermiculite insulation falls into that category. If your home was built before 1990 you might have vermiculite insulation in your walls or attic. So we did that but incompletely.

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. 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. Vermiculite was a common attic insulation product sold from the late 1920s to the early 1990s. 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 mineral that was used for insulation. Vermiculite is a mineral mined from the earth composed of shiny flakes that look like mica. Unfortunately almost all vermiculite insulation contains asbestos and is unsafe when disturbed. It could be purchased locally and could be installed by contractor or homeowner.

The space between the gables. 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. Came from a mine in libby montana sold under the name zonolite. When this mineral is put in an oven it expands like popcorn.

My attic has vermiculite so i have to assume there is asbestos. I m focusing on the attic.