So to answer your question.
Soft roof cleaning.
It will not harm any landscaping around the home yet is 100 effective at removing roof stains from algae.
The non bleach green eco friendly low pressure roof shampoo roof cleaning method uses a proprietary soap that is specially formulated and buffered to be safe on all asphalt and fiberglass shingles.
More specifically we use small 12 volts pumps that deliver an eco friendly biodegradable treatment onto your roof and let the solution do the work.
So to get in front of the question of a pressure washer the term soft wash roof cleaning became one of several roof cleaning buzzwords.
There is no brushing scraping or power washing.
In order to clean your roof safely and effectively we use a soft wash cleaning system which exerts no pressure on your roof.
Inspect your exterior walls for leaks and staining.
Verify your downspouts are connected to a gutter below.
We use a proprietary cleaning mixture that is applied to your roof with a diaphragm pump not a pressure washer.
We also do not drag machinery up and down your roof to clean it.
The products developed for softwash systems not only clean stains but also sanitize penetrate and eliminate the root of the issue.
Algae growth staining and any other type of bacterial or fungal infestations are required to be cleaned or removed from the shingles in order to maintain their issued warranties.
The main culprit of most roof staining that causes prevalent black streaks is a bacteria called gloeocapsa magma.
Soft wash roof cleaning roof cleaning should never be done with a pressure washer.
Soft washing is more than roof cleaning.