Vermiculite Insulation With Asbestos, Vermiculite Asbestos Attic Insulation Updated Information

A mine near libby montana was the source of over 70 percent of all vermiculite sold in the united states from 1919 to 1990.

Raven coloring pages for adults. Once the asbestos was discovered the mine closed in 1990. Vermiculite from libby was used in the. If you need to test a construction material other than a vermiculite please visit a different page.

Consider this statement from research titled zonolite attic insulation exposure studies where even the suggested method for removal by the manufacturer. Periodic tests have been carried out on other vermiculite mines since with no signs of asbestos. Theres no firm cut off date for asbestos contaminated insulation.

Remember asbestos is much heavier than the vermiculite and it slowly sinks close to the bottom of the insulation layer. So to be safe treat all vermiculite insulation as if it contains asbestos. People who used vermiculite products such as for attic insulation and landscaping supplies from zonolite in north america were advised of their options at the time.

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. Vermiculite insulation has a pebble like appearance and typically is a grayish brown or silvery gold color. Panded vermiculite make it useful in lawn and garden agricultural and horticultural products.

Dangers of asbestos contaminated vermiculite insulation in your home. Where does the asbestos come from and why is it a health concern. Collect a vermiculite sample note.

Dig through the insulation layer and scoop a sample from the floor. Concerns about asbestos contaminated vermiculite insulation. Testing is expensive and inaccurate and the probability of asbestos contamination is so great that the epa recommends erring on the side of caution rather than testing for asbestos.

Other common uses are as thermal and sound insulation construction material insulation material and for lightweight absorbent packaging material. However some vermiculite insulation contained asbestos fibres which can cause problems if inhaled. The asbestos found in vermiculite is extremely friable and is the most dangerous type amphibole of asbestos.

When thi material heat it expands to a mush a 30 times the original ize and is fire resistant and extremelu. Scientists with the united states geology survey usgs have created a hand held spectrometer to determine if vermiculite insulation contains deadly amphibole asbestos. Vermiculite insulation granules assume asbestos contamination.

It is made from a natural mineral material that is mined from the earth. The recent innovation should provide a time saving technique for commercial and home inspectors. Vermiculite itself has not been shown to be a health problem.

Do you have or have uou heard of vermiculite insulation. Once vermiculite is disturbed millions of asbestos fibers become airborne.