In general, roof staining organisms like moss, lichens and algae, feed off the organic materials present in shingles. This means that they eat off the roof and so the homeowners and owners of commercial establishment with such a setting on the terrace should not procrastinate the task of treating these organisms. If they are not removed for long, they will create great damage not only to the roof, but also to the entire property as well slowly. When a homeowner begins to search for a roof cleaning company on the internet, he will get many conflicting and confusing details. When it comes to choosing such a service, it becomes important that the owners of the buildings should get an understanding about the different cleaning methods followed by them, so that they can make an informed decision:

 

Non-bleach, low-pressure and eco-friendly method: A roof cleaning company that makes use of this method, use high-grade economically friendly products that has no harmful chemicals like phosphates and chlorine-bleach. Here, low-pressure rinsing system is also used, such that high-pressure brushing and scrubbing that can damage roofs can be avoided.

Pros:

Instant results can be achieved as the living organisms like moss, lichens and algae are completely removed, even before the contractors leave the house after completing the work.

When a professional company is chosen, they know how to wash the roof gently with the help of gentle shampoo, so that too much environmental effect can be avoided.

The integrity of the shingles will be preserved under this method.

 

Cons:

This method can cost high for the homeowners. This is because high-quality, eco-friendly products should be used by the contractor for ensuring safety to the environment.

Chlorine-bleach roof cleaning method: Under this method sodium hypochlorite is used and the contractors mix it with other chemicals like trisodium phosphate. This mixture is sprayed onto the roof and the workers will wait for drying and then reapply it many times as per the requirement. Under this method, the stains that are not removed on the day of cleaning will come off with a rain.

Pros: This method is affordable as against other methods as the chemicals used are inexpensive. Also, it is not essential for the technicians to get on the roof for inspection or for rinsing.

Cons: This is not an environmental friendly method and the chemical odor can pose harm to kids and pet too. So, it is better to opt for a company, who knows how to wash the roof under soft roof wash method.

To conclude, soft roof wash can be the best alternative and it is important for homeowners to choose a company that follows this method.