Roof staining organisms such as algae, lichens and moss
feed off the organic material in shingles. In other words, they eat the
roof. The longer they go untreated, the more damage they will cause.
Homeowners often find
confusing and conflicting information when researching roof cleaning
services. To assist homeowners with making informed decisions when
deciding on which roof cleaning contractor to hire, this article
describes the differences between the three main roof cleaning methods.
1. The eco-friendly, non-bleach, low pressure roof cleaning method
Roof cleaning companies that use this method use
high-grade eco-friendly products that do not contain toxic chemicals
such as chlorine-bleach, phosphates or other chemicals that can kill
vegetation and pollute waterways. This method also uses a low-pressure
rinsing system, avoiding the use of damaging high pressure scrubbing or
brushing.
Pros: Typically, the results with this
method are instant and complete. Algae, lichens, and moss are completely
gone before the contractor leaves the property. Technicians use
eco-friendly roof cleaning products such as roof shampoo and equipment
designed precisely for safe, gentle roof cleaning. Contractors who use
this method clean the roof while preserving the integrity of the
shingles and without damaging the landscaping.
Cons: This method may cost a bit more due to the cost of high quality eco-friendly products vs. inexpensive chlorine bleach mixtures.
Tip: When hiring a contractor who uses
this roof cleaning method, pick one who guarantees that the algae,
lichens and/or moss will be completely gone before they leave your
house. Also, look for a contractor who offers an annual roof stain
prevention program.
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