There are different cleaning methods depending on the source of roof discolouration - blue-green algae leaves black streaks on the roof come from blue-green algae, while moss leaves green patches on the roof. Experts recommend using a garden hose filled with chlorine and water to clean the roof.
Great shine did a fantastic job at our home dealing with 30 windows.
Our house is stucco on the 2nd story; they have a system to reach the reach the 2nd story windows without ladders (which can damage the stucco)
I am very happy with the job that Great Shine did to my windows. they are older windows and Gavin made them look awesome. They were professional , timely, and friendly. Also priced well.
thank you Gavin.