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 Yes, pressure washing can remove mold from your exterior surfaces such as roofing, concrete and siding; however to effectively kill the mold, pressure washing should be combined with a bleach solution. When Philly Power Washing removes mold from your exterior surfaces, we use a bleach mixture to kill any mold and mildew spores growing. It also gets into and kills off any root systems in order to prevent further damage to the tiles and to keep anything from growing back. 

 Yes, pressure washing can usually remove oil stains when combined with a cleaning surfactant. Oil stains can be removed with either a pressure washing wand or surface cleaner. Concrete cleaners specialize in the removal of oil, grease, rust, brake fluid, fertilizer, transmission fluid, rust, stains, algae, dirt, grime, bird & animal droppings, moss, lichen, and paint. 

Pressure washing your exterior surfaces on a regular basis is recommended; however depending on the surface, the time between washing varies. For your deck, fence and concrete surfaces, washing should be done on an as-needed basis. However, a professional roof wash typically last three years, but it is best to have a roof washing expert, such as Philly Power Washing, check yearly for dangerous regrowth. As for your siding, although some people may need to have the exterior of their homes cleaned every few months, we recommend having your home soft washed yearly.