The practice involves the removal of algae, moss, lichen, and debris from roofing composed of composite materials. This maintenance task enhances aesthetic appeal and contributes to the longevity of the roof structure. For example, homeowners may undertake this task to restore the original color of the roof and prevent premature degradation of the shingles.
Maintaining a clean roof surface is important because organic growth retains moisture, which can lead to accelerated granule loss and eventual roof leaks. Regular upkeep can extend the lifespan of the roofing material, potentially saving significant expenses on repairs or replacements. Historically, manual methods were the only options; modern techniques incorporate specialized cleaning solutions and equipment.