Black Mold On Slate Roof

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.

Black mold on slate roof.

Although these dark spots and ugly black streaks on your roof may look like dirt mildew soot or mold what they really are is algae. Once turned into roofing material slate absorbs water and can naturally de laminate during the freeze and thaw cycles of winter. At worst they can pose serious health risks. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.

That s why if. At best slimy black mold deposits are an eyesore. Just because you can t see it however doesn t make it any less dangerous. This quality is what distinguishes slate as a suitable roofing material.

The most common type is known as gloeocapsa magma also known as blue green algae. Technically the black streaks on roofs are a form of algae known as gloeocapsa magma. What are those ugly black streaks on my roof. Slate is a sedimentary rock with miniscule layers that easily cleave.

Believe it or not those black streaks only appear on roofs in certain areas of the country. It s easy to let a mold problem sneak up on you on in out of the way places like the roof of your home. For this reason it works as well on a tiled roof as it does on a bathroom floor. Those that tend to be the most humid furthermore they will only appear on the north side of the roof.