There are two main factors that cause condensation.
Why does the inside of my attic have mold.
The stagnant water causes attic mold growth.
The reason responsible for attic black mold contamination is improperly designed attic ventilation a combination of vents that instead of exchanging the air between exterior and interior they trap create pockets of dead air which condensates on roof decking during the cold season.
Ice dams occur when water can t drain properly from the roof freezes and backs up into the home through the attic.
In the attic photograph at left we show a mix of green gray and white attic mold.
However attic condensation is evidence of wet or very humid attic conditions.
Why does attic mold rarely if ever affect indoor air quality in homes.
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.
Mold in the house isn t just a problem for people with allergies or asthma.
It s due to the simple fact that warm air rises.
Excessive moisture entering the attic from the attic space below.
If you have mold covering large sections of sheathing all over the attic the culprit is.
The most common cause of attic mold by far is blocked or insufficient ventilation of the attic space.
Clean your gutters when you re installing your outdoor christmas lights so that winter s rain and melting snow can drain.
Even if your roof and windows don t leak though humidity in the attic can lead to the growth of mold.
If the mold appears in localized patches it is likely caused by leaks from windows plumbing or roofs.
When attic surfaces or insulation contain a large reservoir of toxic or allergenic mold and if the area were inaccessible say because the space is too small to enter then it may be necessary to remove some portion of roofing to give access for remediation particularly if there is evidence of transmission of problem mold from that space into the living area.
The best way to prevent this.
In a house this phenomenon is known as stack effect air rises from the lower levels of the home and up through the attic.
Typically the condensation is caused by several compounding factors.
Prevent mold and the health problems it causes with these basic tips from the experts at webmd.
When looking for attic mold trace both leak areas and areas of poor ventilation in the attic.
