Rock wool is usually gray white off white or brownish white.
Black wool attic insulation danger.
People can be affected by fiberglass when they come into contact with it either during the manufacturing process or when it is being used in a building.
But while many see the benefits of insulating our houses.
If it is white however it may be a newer product.
Fiberglass insulation or glass wool is a man made vitreous fiber.
Another mineral based loose fill insulation is rock wool which has a fibrous soft cottony texture.
Most homes in america have fiberglass insulation and some people worry that it could be harmful to their health.
The dangers of attic mold.
Rock wool is a silica based stranded insulation very similar to fiberglass.
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.
While this type is often still used older insulation may be discolored or torn and is therefore less effective.
It is a manufactured product made by melting basaltic rock and dolomite with added binders.
By mackenzie wright updated september 30 2017.
It can often be found in creases and corners as well as inside or behind insulation.
Fiberglass insulation a man made mineral fiber con structed from a variety of materials such as sand and recycled glass is the most popular form of insulation in the united states more than 90 percent of homes in america are lined with the pink stuff source.
It is made by pulling strands of glass into thin fibers.
Brown or black in color.
Older types of insulation include loose fill or batt fiberglass which can be pink yellow or white.
The black color is not the color of the insulation.
Mineral wool was the most common thermal insulation for residential use until the 1960 s when fiberglass insulation become the standard.
Looking at the very first pic that you posted it appears to be a rock wool insulation.
Rock wool insulation.
If the insulation is wool like and gray it may be loose fill rockwool.
On wood or drywall it can look like a discoloration or stained area in large to small splotches or smaller spots and speckles.
The raw materials are melted in furnaces and blown with air or steam over spinning drums or a centrifuge to create the fibers picture making cotton candy.
We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons.
Your options for attic insulation range from radiant barriers to sheets of mineral wool but most homeowners stick with products made from cellulose or fiberglass.
