Roof cleaning is required to avoid damage from debris, algae, moss, and lichen growth, which can cause leaks and structural problems. It also improves energy efficiency, maintains aesthetic appeal, and enables early identification of roof concerns.   Roof cleaning should be done every 1-3 years in mild climates like Melbourne to remove debris and avoid algae or moss growth. More regular cleaning may be required in locations with high rainfall, vegetation, or visible algae or moss on the roof. Assess your roof on a regular basis and talk with a professional to establish the best cleaning plan for your roof depending on its condition and environmental considerations. Regular cleaning helps to increase your roof’s lifespan while also maintaining its beauty and function.