Asphalt roof shingle defects.
Mold on slate roof.
Fortunately slate mildew can be cleaned using basic household products.
To get rid of mold and other types of growth for good it s best to use a powerful.
Believe it or not those black streaks only appear on roofs in certain areas of the country.
Mix up your cleaning solution.
Like all tile however slate can be prone to mildew and mold particularly if it is installed in a high moisture area like a bathroom a basement or a kitchen.
Those that tend to be the most humid furthermore they will only appear on the north side of the roof.
Photos and text guide diagnosis of asphalt roof failures how to identify and explain roof shingle failures obtain claims.
Such harsh chemicals are incompatible with the copper components of your slate roof.
When cleaning a slate roof don t use chemicals like ammonia or chlorine bleach.
Spray the entire roof thoroughly.
Use a long handled brush to scour the surface of the shingles and loosen stuck on.
Scrub away the thickest buildup.
Step 1 fill a bucket or basin with warm water and add about 1 2 cup of mild laundry washing detergent.
Moss mildew and algae are the most common growths seen on slate roofs.
Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
Here we discuss the causes of algae moss lichens or fungal growth on roof shingles the effects of these conditions and how to cure or prevent them.
Identifying removing preventing algae fungus lichens moss on roof shingles.
Buildup of moss and debris on slate roofs hold moisture in the slates that can split them during winter.
For the most part this growth is not harmful to the slate but it can lead to damage to the underlying wood sheathing.
Technically the black streaks on roofs are a form of algae known as gloeocapsa magma.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.