Mold On Slate Roof

Spray the entire roof thoroughly.

Mold on slate roof.

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. Believe it or not those black streaks only appear on roofs in certain areas of the country. Step 1 fill a bucket or basin with warm water and add about 1 2 cup of mild laundry washing detergent.

Those that tend to be the most humid furthermore they will only appear on the north side of the roof. Technically the black streaks on roofs are a form of algae known as gloeocapsa magma. Use a long handled brush to scour the surface of the shingles and loosen stuck on. For the most part this growth is not harmful to the slate but it can lead to damage to the underlying wood sheathing.

Such harsh chemicals are incompatible with the copper components of your slate roof. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. Fortunately slate mildew can be cleaned using basic household products. 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.

Scrub away the thickest buildup. When cleaning a slate roof don t use chemicals like ammonia or chlorine bleach. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. Asphalt roof shingle defects.

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. Photos and text guide diagnosis of asphalt roof failures how to identify and explain roof shingle failures obtain claims. Spraying the roof 1. The black streaks are also known as black algae or roof mold.

Just because slate takes longer to weather than most other roofing materials it does not mean that it is immune to organic growth.