Mold On Roof In Attic

Rafters sheathing joists attic side of fascia boards etc.

Mold on roof in attic.

Benefits of getting rid of mold in your attic by replacing the roof. What does attic mold growth from a roof leak typically look like. Mold in attic is fairly common because attics are often damp. Systemic growth occurs when the roof leak causes enough moisture buildup in the attic to cause mold growth throughout the entire area.

Unfortunately by sealing the vents or tacking insulation to the underside of the roof we create ideal environment for attic mold to grow by keeping moist warm air trapped inside. I ve seen 3 000 00 10 000 00 invoices for the attic black mold remediation process in approximately 1000 1200 square feet of attic area. Faulty roof insulation or construction can lead to leaks and a lack of proper ventilation can cause humidity to accumulate. Mold growth in an attic comes as a consequence of excess moisture.

There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread. Roof leaks cause two types of mold growth. In the vast majority of cases the mold growth is caused by condensation. Check for areas of dark discoloration staining of wood e g.

If your roof leaks or any attic windows leak you ve got moisture in your attic and probably need to consider attic mold removal. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. In this case the moisture buildup is indirect the roof leak only affects a small area but the dampness in the air causes. Even in this case in our opinion the reasons to remove and replace roof sheathing and framing would normally be based on the condition of the roof framing and sheathing not on the.

In our roof interior attic photo at left you can see antique roof framing along with black stains and probably some mold growth from a long history of roof leaks. Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements. Roof leaks will often lead to a small localized area of attic mold near where the leak is occurring. Systemic or limited growth.

Below are a few ways to check for possible roof leaks. Mold on attic sheathing. Even if your roof and windows don t leak though humidity in the attic can lead to the growth of mold. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.

Many of us think the opposite and seal all of the attic vents or even insulate the roof decking assuming it will lower our heating bill.