The most common cause of attic mold by far is blocked or insufficient ventilation of the attic space.
Mold in attic home inspection.
Even if your roof and windows don t leak though humidity in the attic can lead to the growth of mold.
Unexpected mold is found in an attic or crawlspace during an inspection.
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Although mold in your attic does not lead to indoor air quality issues it can lead to deterioration of your roof structure.
Therefore it really isn t a per se health concern.
In real estate transactions the discovery of mold in an attic or crawl space by an inspector often comes as an unexpected surprise to the parties involved.
While damp and warm climates are a prime breeding ground for our fuzzy friend other conditions that bring mold include lack of ventilation and proper sheathing.
Attics usually have a passive ventilation system in which outside air comes in through the soffit eave vents at the bottom warms up in the attic and escapes through the can or ridge vents at the top because hot air rises.
If your roof leaks or any attic windows leak you ve got moisture in your attic and probably need to consider attic mold removal.
Mold spores don t have wings e g they can t fly against an upward flow of air from stack effect within a house so it s extraordinarily rare for attic mold spores to show up on indoor air quality mold tests.
But mold in attics and crawl spaces do not need to kill a transaction.
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.
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Mold located on ductwork on roof decking trusses or just about anywhere in the attic is simply a problem of excessive moisture.