Why You Need Your Roof Cleaned
The True Culprit
The streaks that are staining the roof are actually a bacteria called Gleocapsa Magma. A mold that is eating away at your roof. According to ARMA (The Asphalt Roofing Manufactures Association) your roof should have a 30 year life span. Mold on your roof can cut this lifespan in half causing roofs to deteriorate, forcing you to replace your roof sooner than you have to.
This is the main culprit for most of the roof staining throughout the US, especially here in the Houston area. There are a few more culprits that also grow on roofs, making a mess of things. Roof top organisms like mildew and algae are unsightly, but not as destructive as some of the more aggressive bacteria's and fungus. Moss and lichens also abound, and are the final bad actors that show up after the party has been started by the fungal growths. These algae, molds, mildews, bacteria's, lichens and mosses directly decompose and break down roofing materials.
How do we kill the bacteria that is leaving your roof with ugly black streaks? Good Question! While a lot of companies use high pressure from a pressure washer, which causes damage and does not kill the mold at the root, we use a special mixture of products, that are recommended by ARMA(The Asphalt Roofing Manufactures Association) . The main ingredient is sodium-hypochlorite. Similar to what is put in a pool to kill bacteria. This kills the mold right down to the root, and keeps the mold from growing back for up to 5 years.
Whole roof cleanings come with a three-year guarantee that your roof will remain mold-free, but you can generally expect it to stay clean and beautiful for at least four years before the algae becomes noticeable again. If Mold returns before the 3 year Guarantee is up, we will come out at no additional charge and retreat the roof .... Now That is what I call a GUARANTEE!