Black Mold On Slate Roof

For this reason it works as well on a tiled roof as it does on a bathroom floor.

Black mold on slate roof.

Slate is a sedimentary rock with miniscule layers that easily cleave. At best slimy black mold deposits are an eyesore. 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. This quality is what distinguishes slate as a suitable roofing material.

What are those ugly black streaks on my roof. Technically the black streaks on roofs are a form of algae known as gloeocapsa magma. That s why if. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.

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. The black streaks are also known as black algae or roof mold. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. Once turned into roofing material slate absorbs water and can naturally de laminate during the freeze and thaw cycles of winter.

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. Slate is one of the most durable and popular materials used in construction. At worst they can pose serious health risks. Believe it or not those black streaks only appear on roofs in certain areas of the country.