Softwashing typically lasts 4-6 times longer than power washing. Every home has reasons why they get algae to start with, which can affect how fast it returns. Shady spots, moist areas, vegetation overlay, and seasonal climates all factor into the equation.
The black streaks you see on a roof are algae. If left untreated, it can destroy the shingles, making them vulnerable to damage and water leaks.
The American Roof Manufacturers Association (ARMA) only recommends the Softwashing method for roof cleaning. This low-pressure method won't damage the surface, and using biodegradable chemicals and soap will kill bacteria and clean the roof.
Absolutely, but children and pets should remain out of the work area until the job is complete.
Softwash is the environmentally responsible choice because all of our cleaners break down into carbon and water within 20 days of introduction into the environment.