Visible algae growth or staining on Heliocol panels and roof area around them.

Safety first: Use fall protection and non-slip footwear on the roof. Do not use harsh chemicals that can damage panels or roofing.

• Rinse panels: Use a garden hose with moderate pressure to rinse dirt, leaves, and algae from the Heliocol panels. Avoid high-pressure washers.
• Use mild cleaner: If needed, apply a mild, non-abrasive, non-petroleum-based cleaner approved for plastics and rinse thoroughly.
• Improve drainage: Ensure panels are installed with proper slope so water does not pool on the surface.
• Trim vegetation: Cut back overhanging branches to increase sun exposure and reduce moisture retention.