Mold will survive in almost any environment that is the right temperature has moisture even in the air and has something for food e g.
Attic moisture mold.
How to spot attic mold due to high attic moisture or roof leaks.
If you re layering insulation atop other insulation don t use the kind that has kraft face finish i e paper or foil backing.
If your attic is well ventilated and has no moisture intrusion you won t have attic mold to deal with.
Mold remediation currently being done throughout whole house.
Mold requires moisture moderate temperatures and a source of energy to grow.
And while it will cost some money to take care of it know that it can be taken care of quickly and at a reasonable cost.
Because moisture may enter the attic more at some locations than others for example over a bathroom or kitchen nail staining and drip marks will not be uniformly distributed throughout an attic.
This moisture feeds mold growth.
As such it is recommend you minimize attic storage as much as possible.
Mold located on ductwork on roof decking trusses or just about anywhere in the attic is simply a problem of excessive moisture.
Unfortunately improper installation or choosing the wrong kind of insulation causes moisture from the lower levels of the home to rise and get trapped in the attic.
Hvac system and attic to be fixed to reduce humidity and condensation remediation experts are saying that all mold does not need to be removed as this is not a living space.
Attic hvac system causing condensation and high humidity which caused mold throughout attic.