A timely article as we are experiencing mold on our attic sheathing in our portland.
Fungus on roof sheathing.
Mold on the underside of roof sheathing is also very common.
This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.
To clean mold off a roof start by putting on rubber gloves a breathing mask and goggles to protect yourself from the harsh cleaning chemicals.
It was built in 1978 and when we bought it a couple of years ago the roofing was replaced as part of the sale agreement along with a couple sheets of roof sheathing additional round 3 soffit vents put in and mold mitigation.
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.
Next mix 1 quart of bleach 1 gallon of water and cup of trisodium.
Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.
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.
If there is a leak in the roof plumbing or windows the mold will reappear if the water is still getting into the.
Then use a long handled brush to scour the surface of the shingles and loosen stuck on mold while it s dry and brittle.
Cleaning the sheathing kills the mold and prevents it from producing spores.
Mold on attic sheathing.