Soft washing is the preferred method.
High pressure when used on a roof (anything over 100psi) damage can occur to the roof by removing the granule from asphalt shingles or damage the seals of other forms of roofing. This is why soft washing is a preferred method of roof cleaning by the NRCA. (National Roofing Contractors Association)
What is soft washing?
Soft washing is a method that uses water under 100psi and soap to help remove moss, lichen, Gloeocapsamagma roof stains, and other organic materials. We let the soap do the work, and don’t rely on high pressure.
When moss, fungus, or algae go untreated on your roof, it reduces the energy efficiency of the roof. The materials that your roof is made of are designed to reflect sunlight, minimizing heat absorption.
Increase in temperatures, decreases the efficiency of your cooling system, which in turn increases your energy costs in the summer. Which can increase your electric bill by several hundred dollars a year. For a much greater return on your investment and at a minimal cost per year, soft washing can restore the efficiency of your roof and with proper treatment can add several years to the longevity of your roof.
Platinum exterior cleaning knows that you take pride in your landscaping and yard, when roof cleaning is done correctly it will greatly minimize any damage to your plant life. All preventative measures are taken to ensure the safety of your landscape and yard.
We are not just using unsightly powders to treat your roof, we are actually cleaning it and protecting it from any further damage.