The answer to 'how to clean metal roof' is to regularly clean and maintain your metal roof to keep it looking its best and prevent damage. This involves gently washing the roof with a soft-bristle brush, mild detergent, and water to remove dirt, debris, and any mildew or moss buildup.
It's important to avoid using harsh chemicals or abrasive cleaners that can damage the metal surface. You'll also want to be cautious when working on the roof, using proper safety equipment like non-slip shoes and a harness if necessary. Cleaning your metal roof every 6-12 months is generally recommended, but the frequency may vary depending on your local climate and conditions.