Roof staining organisms (lichens, moss and algae) feed off the organic material in shingles. Wherein, they eat the roof. The longer these contaminants go untreated, the more damage they will cause to a roof.
Some homeowners often find confusing and conflicting information when looking for roof cleaning services. To help homeowners select the perfect roof cleaning company to hire, this article explains the differences between the main roof cleaning methods.
Environment-friendly, non-bleach, low pressure roof cleaning techniques
Roof cleaning companies that use low-pressure technique utilize high-grade eco-friendly products that don’t contain toxic chemicals, such as phosphates, chlorine-bleach, or other chemicals that can destroy vegetation and pollute waterways. The use of a low-pressure roof cleaning process will avoid the use of damaging high-pressure brushing.
Typically, the results with the low-pressure roof cleaning method are instant as well as complete. Lichens, moss and algae are completely killed before the contractor leaves the property. Roof specialists use environment-friendly roof cleaning products, such as roof shampoo, designed for safe, gentle roof cleaning. Contractors who utilize the low-pressure process will clean the roof while keeping the integrity of the shingles and will not damage the landscaping.
When hiring a company who uses low-pressure roof cleaning method, choose one who guarantees that the lichens, moss and algae will be completely gone before they leave your property. Look for a contractor who provides an annual roof stain prevention program.
High-pressure power washing method
Some roof cleaning companies use high-pressure roof washing method to eliminate roof stains. Not only is this process will damage shingles, but it is also not an effective way to get rid of organisms that cause roof stains. The high-pressure roof cleaning method leaves root systems behind, so the algae, lichens and moss will often return rather quickly.
If you look closely at a concrete walkway that has been pressure washed, you can definitely see the surface damage. Also, high-pressure washing of shingle roofs will blast off the granules of the shingles and will compromise roof integrity. High-pressure washing can be very effective for driveways, walkways, pool cages, as well as some debris removal on exteriors. High powered pressure washing may strip the surface of the tile and will shorten its life expectancy. High-pressure washing shouldn’t be utilize for roof cleaning.