Discoloration and Roof Streaks Explained

Black discoloration and streaks on the roof are algae. Algae grows when the habitat is moist on the surface of the roof for long periods of time or in humid conditions. The most common type we see is gloeocapasa magma or blue-green algae. These microorganisms can metabolize many roofing material surfaces. Limestone is a filler mixed into the aggregate of the shingle. Many of the microorganisms utilize this limestone as the base nutrient of their roof ecosystem and begin to feed on it. If left unchecked, this algae, fungus, and bacteria will significantly cause deterioration to the roof surface at a more rapid rate. A small ecosystem will be created. The waste stream from this ecosystem creates acids that will also break down construction materials furthermore deeply penetrating that surface.

Algae, mildew, fungus, and lichen have a root system. The root system will attach to the roof or building surface and start to break down and decompose the surface creating cracks and fishers.

Cleaning and sanitation chemicals, used in solutions mixed according to label instructions, can be effective against these pests. Chemicals that are sanitizing agents like bleach can be augmented with surfactants and activators to make sure the sanitizing agent permeates deep into the colonies of the algae and bacteria.

The stains on the roof are living organisms, so we treat the base of the problem by eliminating the growth that is deteriorating the roof surface. Our cleaning solution manages this process to eliminate and create a clean roof surface.

If you see roof discoloration and streaks, give us a call, and we can provide an estimate and in the long-run save your roof and money!