The black facing is paper like.
Black attic insulation.
Our climate is cold and lots of snow in winter but hot and humid in summer.
The area in the attic that has turned black is right under the gable vent.
Insulation filters the air leaks from your house showing you signs of energy loss you might have noticed some black insulation in your attic or maybe around the perimeter of your basement where the house rests on the foundation.
The types of insulation that were most commonly made with asbestos are loose fill also called blown in insulation.
Get a free 24 hour blown in machine.
The last pic you posted is loose fill rock wool so i d imagine that the blanket material in question is the same.
Walls that are improperly insulated may develop mold because they will absorb moisture from outside.
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In the attic the most common places to find black mold are the places where water is likely to be a problem.
Is this mineral wool.
It makes adding insulation to your attic a breeze.
What does this mean.
The 2 gable vents are the only venting.
The area is over 2 bedrooms no moisture coming from below.
We have a 1960 s ranch in columbus oh where i opened up our soffit to find this black faced barrier made by forty eight insulations that has loose fill fiberglass insulation on top of it as our attic insulation.
The vent is just above the area in the picture.
I see small blotches of gray insulation throughout the blanket which indicates that this insulation is black coated due to serious venting issues within the attic.
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The black color is not the color of the insulation.
You get a free blown in machine rental with your insulation purchase.
The reason the fiberglass gets discolored is that it s acting like an air filter.
Over the years that continuous air leaking from the house up to the attic turns the fiberglass black with dust.
If your attic or wall insulation is in batt or blanket form whether it s fiberglass cellulose or another material you generally don t have to be concerned about asbestos.
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Loose fill insulation comes in a variety of materials.