Vermiculite Asbestos Attic Insulation

However some vermiculite insulation contained asbestos fibres which can cause problems if inhaled.

Vermiculite asbestos attic insulation.

Came from a mine in libby montana sold under the name zonolite. Consider this statement from research titled zonolite attic insulation exposure studies where even the suggested method for removal by the manufacturer grace created a very unsafe condition. As long as this kind of vermiculite based insulation remains undisturbed behind intact walls or in attic spaces and does not become airborne it should not be a concern. It may have shiny flakes and or small accordion like pieces see photos above.

The vermiculite from libby is part of the longest man made environmental disaster in american history. Vermiculite loose fill insulation is one of the most common household materials that contains asbestos. Vermiculite in and of itself is not dangerous. Not all vermiculite contains asbestos.

Vermiculite insulation has a pebble like appearance and typically is a grayish brown or silvery gold color. What made the libby vermiculite so dangerous was its proximity to asbestos deposits. That s good news because most zonolite a type of vermiculite insulation falls into that category. One common brand was called zonolite.

The insulation which was known by the brand name zonolite is most often found in residential attics. 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. The asbestos found in vermiculite is extremely friable and is the most dangerous type amphibole of asbestos. You can also check for markings on the material or its packaging.

Vermiculite is a mineral that was used for insulation. Up to 85 percent of all vermiculite insulation in the u s. Vermiculite attic insulation removal costs anywhere from 4 to 10 per square foot. Vermiculite insulation removal costs.

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. Vermiculite is utilized for attic insulation as well as other purposes. Once vermiculite is disturbed millions of asbestos fibers become airborne. Vermiculite attic insulation is a pebble like pour in product and is usually light brown gray or gold in color.

Installing new insulation costs an average of 1 400. However the vermiculite used in about 70 percent of the zonolite product came from the montana mine mentioned a moment ago. When heated to a high temperature flakes of vermiculite expand as much as 8 30 times their original size. It is made from a natural mineral material that is mined from the earth.

Vermiculite itself has not been shown to be a health problem.