Mattoon Roofing: Article About How To Pressure Wash A Roof
Cleaning a roof is a big job, and a thorough cleaning removes the dirt, debris and algae that collect on the roof. In many cases, a gentle cleaning with a garden hose and a scrub brush is enough; however, it is sometimes necessary to apply more force. This is when pressure washing the roof may be called for although Mattoon roofing professionals generally do not recommended it for use on asphalt shingles.
If the roof has developed a layer of moss or algae and is not a flat roof, pressure washing can be done successfully by taking care to use the lowest settings possible to minimize the force of the water hitting the roof. Simple rainwater will not free the fungus from the tile or shingles, and scraping it off causes much more damage. Instead, homeowners will want to start with a pressure washer filled with a cleaning solution that includes a compound that removes mold. The best pressure washer to use will have a spray wand with a 35 degree head. This allows the water to be sprayed over a larger area and minimizes the force the water hits the rooftop.
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Prior to starting the cleaning process, it is important to take the necessary safety precautions to prevent falling. Water will make the roof extremely slick, so safety harnesses and rubber soled shoes should always be worn. It is important to have another person available to help spot and move the ladder when necessary. Cleaning should always begin away from the ladder and with the person cleaning standing higher on the roof, facing the lower levels of the roof.
Most pressure washers have different pressure settings, and the safest level for roof cleaning is the lowest setting possible. In addition, holding the wand high will cause a majority of the pressure to dissipate before the water hits the roof. The best way to clean is by spraying in the direction the shingles are laying so that the water will flow over them. This prevents the water from being pushed up underneath the shingle, either loosening it or causing water to leak into the attic space. If the algae or moss is stubborn, lower the head of the wand to create more force. Do not increase the pressure settings, or damage will be caused to the roof. Working slowly and carefully, the roof will be cleaned, and routine cleaning often prevents further problems with algae growth.