Fungus On Roof Sheathing

Mold on the underside of roof sheathing is also very common.

Fungus on roof sheathing.

You must address the underlying moisture issue in order to stop the mold growth. Mold that grows on the underside of roof sheathing due to ideal mold growth conditions being present. After that spray the solution on your roof let it sit for 15 20 minutes then scrub off the mold. Bleach kills fungus on contact.

Mold growth provided it is not just cosmetic mold which can simply be left alone can be cleaned from wood surfaces by blasting scrubbing or even simple surface wiping depending on the surface accessibility and smoothness. If you see black stuff covering or growing on the roof sheathing in your attic it s probably mold. Painting or sealing it will not address the problem. Blocked soffit intake vents are ineffective in providing good under roof or attic ventilation causing wet and possibly moldy roof sheathing on those roof sections where no venting is provided.

After several years of this there may be dark rings around protruding roofing nails and larger dark spots or areas on the roof sheathing and or exterior gable walls. Generally tearing off a roof and roof sheathing and perhaps roof framing to remove mold would not be sensible nor cost justified. Because wood is porous it may be difficult to remove the mold stains from sheathing but you can kill the mold by cleaning the sheathing with bleach and water. Next mix 1 quart of bleach 1 gallon of water and cup of trisodium phosphate to make a cleaning solution.

Mold can form but often it is. Finally rinse your shingles with water to wash away the chemicals. After cleaning off the roof treat the roof with a moisture resistant solution to help keep moisture off. Proper attic ventilation in your home is important for many reasons.

The presence of mold in your attic is often the result of poor ventilation insufficient insulation moisture from a roof leak or improper venting from your bathrooms or kitchen. It s never fun to find out that your house has mold but the fix for mold in the attic is usually quite straightforward and doesn t involve the services of any mold remediation experts. This will be the perfect time to check on your gutters to make sure they are draining properly. Left unattended the moisture and fungal growth will eventually degrade the roof sheathing.