What Causes Mold On Roof Shingles

If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.

What causes mold on roof shingles. An undiscovered roof leak water draining into the foundation or debris gathering in a roof corner all create a nice moist place for mold spores to grow. Photos and text guide diagnosis of asphalt roof failures how to identify and explain roof shingle failures obtain claims. Identifying removing preventing algae fungus lichens moss on roof shingles. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.

Roof algae and roof mold have been around longer than us. Unlike algae and moss mold is not a healthy plant. Roof stain history and causes. Mold spores travel in the air but require the right environment to take hold and grow.

The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores. Both the american roof manufactures association arma and canadian asphalt shingle manufacturers association casma state that gm is only an aesthetic issue giving a. Mold can occur in places where your roof has absorbed water. Many of these same homes are vulnerable to roof leaks which allow water and mold growth to spread into attics top floors and more.

The black streaks are also known as black algae or roof mold. How to remove mold and moss from your roof shingles posted on september 20 2018 july 27 2020 by brava roof tile while it may not actually cause harm to your home moss mold and algae certainly don t improve a house s appearance. Here we explain when a roof tear off is justified as part of an attic or roof mold cleanup. Roof mold can appear as black or brown blotches or slimy foul smelling accumulations.

Here s why algae grows on roofs. What causes roof mold and stains. Roof stains are caused by algae that has been around thousands of years but changes in shingle manufacturing are allowing it to spread. Is it necessary to remove roof sheathing or framing to fix attic mold growth.

Correcting attic mold contamination. There is very little information as to the damage gm in itself will cause to roofing materials. Technically the black streaks on roofs are a form of algae known as gloeocapsa magma. Though often attributed to an accumulation of dirt defective shingles mold or mildew.

Attic or cathedral ceiling mold cleanup. Asphalt roof shingle defects. Black mold on roof shingles is most common on homes in rainy storm plagued climates especially on ill equipped homes with insufficient roof drainage. Do we need to remove the roof or perform other demolition to clean or remove attic cathedral ceiling or other roof cavity mold contamination.

Some state it is only an aesthetic problem while others state it causes damage. A roof with little direct sunlight that collects debris or has improper drainage increases risk of mold. Cleaning roof shingles should be a part of routine home maintenance.