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 this brown powder dust in attic.

Vermiculite insulation has a pebble like appearance and typically is a grayish brown or silvery gold color. It is spread out on the floor of the attic approximately seeral inches. When we were removing the lath and plaster we found a white very fine powder insulation in the attic and sloped cielings. 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.

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. The higher the merv rating the smaller particles it can catch. The material in question looks almost like brown mulch or top soil.

I have had an asbestos survey done with no asbestos found in the powder. Do not disturb vermiculite insulation. The white stuffs turned to white ash after a fire test. 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.

If it seems like your filters never get dirty or you only change them once in a blue moon chances are they re not catching the dust in your air. I found this light weight cellulose insulation material in a over 70 years old attic which contains some short fibers. Does anyone have any idea what this stuff is. It is made from a natural mineral material that is mined from the earth.

Vermiculite loose fill insulation is one of the most common household materials that contains asbestos. I have some white powder in my attic but nowhere near 4 deep and only in a few places. Buy air filters with a higher merv rating. Attic is in a multifamily housing unit built circa 1994.

There is a layer of brown paper under it and the powder is about 2 thick.