Natural cleaning by rain is far from sufficient, especially with low roof pitches, near farms, new development areas, forests and regions with little precipitation. On average, there is a performance loss of up to 15 to 20 percent within 1 to 2 years. Use conventional cleaners that can damage your system through glass corrosion due to aggressive ingredients. Specially developed for all solar and photovoltaic systems in regions prone to dirt and with low roof pitches. To protect galvanized gutters, they should be pre-wetted with water. Depending on the degree of contamination, dilute this special product 1:3 or 1:4 with distilled water or rainwater and apply to the surfaces to be cleaned using a sprayer. After allowing it to act for 2 to 3 minutes, rinse again with distilled water or rainw.
eBay