I Have This Brown Powder Dust In Attic

There s also some fine white powder that blew in during the sandblasting.

I have this brown powder dust in attic.

I have some white powder in my attic but nowhere near 4 deep and only in a few places. I have had an asbestos survey done with no asbestos found in the powder. Before i go further there are power dusters and you could treat an entire attic much the same as with a fog machine. Attic is in a multifamily housing unit built circa 1994.

Does anyone have any idea what this stuff is. 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. The higher the merv rating the smaller particles it can catch. When we were removing the lath and plaster we found a white very fine powder insulation in the attic and sloped cielings.

It is made from a natural mineral material that is mined from the earth. Buy air filters with a higher merv rating. Do not disturb vermiculite insulation. There is a layer of brown paper under it and the powder is about 2 thick.

It is spread out on the floor of the attic approximately seeral inches. 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. The white stuffs turned to white ash after a fire test. Vermiculite insulation has a pebble like appearance and typically is a grayish brown or silvery gold color.

Vermiculite loose fill insulation is one of the most common household materials that contains asbestos. Call an asbestos certified professional for assistance. 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. I found this light weight cellulose insulation material in a over 70 years old attic which contains some short fibers.

The material in question looks almost like brown mulch or top soil.