Black Mold On Slate Roof

Once turned into roofing material slate absorbs water and can naturally de laminate during the freeze and thaw cycles of winter.

Black mold on slate roof.

Just because you can t see it however doesn t make it any less dangerous. Slate is one of the most durable and popular materials used in construction. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. For this reason it works as well on a tiled roof as it does on a bathroom floor.

At best slimy black mold deposits are an eyesore. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. This quality is what distinguishes slate as a suitable roofing material. Slate is a sedimentary rock with miniscule layers that easily cleave.

What are those ugly black streaks on my roof. That s why if. Believe it or not those black streaks only appear on roofs in certain areas of the country. 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. At worst they can pose serious health risks. The most common type is known as gloeocapsa magma also known as blue green algae. 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.