I asked the seller about it since it was installed 2 years back and the paperwork he had just said r 30 loose fill and it was 10 thick appearing to be r 3 per inch.
Danger of white loose fill insulation in attic.
Older types of insulation include loose fill or batt fiberglass which can be pink yellow or white.
This is slightly different from another type of cellulose insulation which is designed to be blown onto open walls much like spray foam.
While this type is often still used older insulation may be discolored or torn and is therefore less effective.
Saturated insulation typically loses at least 40 of its insulating r value.
The paperwork didn t go into specifics about what type of insulation it.
It isn t itchy like loose fill fiberglass but appears to be a bit lighter weight and easier to move around.
The most common type that homeowners will encounter is called loose fill cellulose insulation.
Fiberglass insulation is not generally considered to be dangerous but it can irritate the skin and respiratory system.
You may also find thousands upon thousands of loose particles beneath the floorboards of your attic and inside walls.
There are three types of blown in insulation.
This is how i did my entire attic without a helper or blow in machine.
All of those can be a dangerous risk.
Asbestos fibers are most dangerous when they are airborne and can be breathed in.
Loss of insulating value.
Leaving insulation undisturbed greatly reduces the risk of exposure.
If the insulation is not properly sealed off it can get into air vents and circulate through the building.
The three most common types of blown in insulation are loose fill fiberglass cellulose and rock wool each with its own pros and cons.
Some studies suggest tremolite could be 10 times more dangerous than the white asbestos used by most manufacturers.
Homeowners can also come across fiberglass insulation during repairing or clearing out the attic.
If your loose fill insulation fits the visual cues for vermiculite the first thing to do is to avoid disturbing it.
What to do with suspicious insulation.
If the insulation is wool like and gray it may be loose fill rockwool.
If it is white however it may be a newer product.
Wet insulation no longer performs its primary function of inhibiting heat transfer.