Have you ever noticed black stains on residential or commercial roofs?  If so, it is more than likely mildew stains, which have built up over time due to the weather and the exposure to the elements.  Often the heavy presence of trees around the structure promotes the growth of the mildew, especially on shaded sections of the roof where the sun is unable to dry out the roof properly after rain events.  These stains really detract from the appearance of the home or business and can shorten the life of asphalt shingles.  However, low pressure roof cleaning will remove the mildew and restore the appearance of the roof. 

A qualified pressure washing contractor who specializes in low pressure roof cleaning is critical to getting the job done without damaging the roof or the interior of the building.  The contractor’s trained technicians will first apply a special non-toxic cleaner to the roof, which effectively treats mildew and other stains on the roof.  After the cleaner has been given time to work, the technician will then use low pressure water to clean the roof, taking care that water does not get under the shingles, as well as making sure that the shingles are not damaged in the washing process.  Interior water damage of ceilings is likely if water gets under the shingles!  In addition, traditional power washing of a roof will more than likely damage the roof, especially when done by an inexperienced technician. 

A qualified licensed and insured pressure washing contractor who specializes in low pressure roof cleaning can complete this work economically and quickly without damaging the home, building or the landscaping.  Often this service is combined with traditional power washing services of the remainder of the home or business, leading to a significantly improved appearance!