Methods of cleaning Roofs I.

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.