Gloeocapsa magma / Green Building & Sustainable Home Renovation Information & Advice

A close-up macro shot of the ceramic granules on a new asphalt roof shingle.
Roof assemblies - renovation

The definitive Guide to Cleaning & Treating Asphalt Shingle Roofs

...Gloeocapsa Magma Algae The most common aesthetic issue for asphalt shingles is the appearance of dark, vertical streaks. This is not dirt or tar, but a type of algae named Gloeocapsa magma that thrives by feeding on the limestone filler used in most asphalt shingles. While it does not cause rapid failure, it does trap ...

A close-up view of a roof shingle with green moss and dark algae stains on it.
Roof assemblies - renovation

Eco-friendly Roof Cleaning and Treatments: The Complete Guide

...Gloeocapsa magma which feeds on the limestone filler in the shingles, slowly degrading them. Lichen: These tough, patchy growths are a combination of algae and fungus. They attach firmly and can erode the roof surface as they grow. The principles of safe, eco-friendly roof cleaning Adhering to the principles of safe,...