I Have This Brown Powder Dust In Attic

Vermiculite loose fill insulation is one of the most common household materials that contains asbestos.

I have this brown powder dust in attic.

There are 2 inches thick light brown cellulose on top of the 2 inches thick white cellulose finer than the top layer but not in powder form. I have had an asbestos survey done with no asbestos found in the powder. Do not disturb vermiculite insulation. The material in question looks almost like brown mulch or top soil.

There s also some fine white powder that blew in during the sandblasting. The white stuffs turned to white ash after a fire test. There is a layer of brown paper under it and the powder is about 2 thick. Attic is in a multifamily housing unit built circa 1994.

Buy air filters with a higher merv rating. Typical fiberglass filters are rated 1 4. The higher the merv rating the smaller particles it can catch. Vermiculite insulation has a pebble like appearance and typically is a grayish brown or silvery gold color.

It only shows up near areas of stucco damage on the exterior walls so i think it s from the old stucco perhaps a bad mixture here and there. My hesitancy there is that this big cloud of dust doesn t dissipate like a fog and the powder settles on top of everything it touches. It is made from a natural mineral material that is mined from the earth. When we were removing the lath and plaster we found a white very fine powder insulation in the attic and sloped cielings.

The environmental protection agency provides ways to identify vermiculite on its website generally a pebble like material typically gray brown or silver in color. Before i go further there are power dusters and you could treat an entire attic much the same as with a fog machine. I have some white powder in my attic but nowhere near 4 deep and only in a few places. Call an asbestos certified professional for assistance.

Does anyone have any idea what this stuff is.