Finished Attic With Vermiculite

That s good news because most zonolite a type of vermiculite insulation falls into that category.

Finished attic with vermiculite.

Vermiculite is a mineral mined from the earth composed of shiny flakes that look like mica. Vermiculite is a mineral that was used for insulation. The space between the gables. 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 is a natural insulation material but it s one that you definitely don t want to have in your attic. I m focusing on the attic. Came from a mine in libby montana sold under the name zonolite. If your home was built before 1990 you might have vermiculite insulation in your walls or attic.

Homeowners and buyers often want to know if they should leave the. I live in maryland and want to retrofit my house built in 1938. Vermiculite was a common attic insulation product sold from the late 1920s to the early 1990s. When this mineral is put in an oven it expands like popcorn.

It could be purchased locally and could be installed by contractor or homeowner. 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. Unfortunately almost all vermiculite insulation contains asbestos and is unsafe when disturbed. So we did that but incompletely.

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