Why Research When Looking for a Roof Cleaning Contractor?
Posted By Houston Decorator on December 30, 2010
It will be considerably less expensive to read the facts and hire the correct contractor than replace your roof and landscaping prematurely.
The most common reason for cleaning asphalt shingle roofs is to remove a fungus growth called Gloeocapsa Magma. This particular type of algae is air-born and will collect on any type of roof. In most cases the owner of the property won’t notice the algae growth until it begins to take over large sections of the roof. This algae usually forms dark brown or black stains on the roofing and it thrives in mostly warm humid areas. Roof cleaning with the appropriate cleaners and rinsing method can effectively remove this unsightly blemish from any type of roof, without harming its integrity.
This bulletin offers concise, easy-to-understand information on common maintenance, repair, installation and weather-related topics affecting both residential and commercial roofs, asphaltroofing.org/pdf/tb_217.pdf
“Use the least amount of pressure and the mildest chemical possible to achieve the desired result!” If a roof’s appearance is not acceptable and cleaning it is the preferred method of improvement, asphalt shingles should be washed with a mild solution of chlorine bleach or mild detergent, applied with a hand-held sprayer. The surface then must be rinsed thoroughly with water.
“Splash & Dash” Roof cleaning contractors do not rinse the chemicals off the roof before they leave, the concentrated residues that drip from the roof after dew or light rain will kill plants. The client maintained that his mature and well manicured plants were covered during the cleaning process, the damage to the plants happened as a result of the residue of concentrated chemicals that dripped off the roof several days after the contractor had finished cleaning the roof. Another tell tale sign that they do not rinse is to use a bag on the downspouts to catch the chemical. When they are finished the drip edge around the home is still dirty. Your aluminum gutters will rust. Remember that sodium hydroxide (chlorine) is a corrosive chemical and must be flushed thoroughly. Also shingles are that of oil base material. What would happen if you put chlorine on your scalp and did not rinse it out?
When Shopping Around For A Roof Cleaning Contractor, You Should Be Concerned If They Will Not Tell You What Chemical They Are Using, Or Its Ratio, If Indeed They Do Even Dilute It And If They Rinse.
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