Many of today's top shingle manufacturers offer algae resistant roof shingles, which can be installed by a local roofing contractor.

A How To on Effective Asphalt Shingle Cleaning done safely and correctly including common reasons for cleaning and common cleaning methods.

The golden rule of roof maintenance is do it twice a year - once in autumn to prepare the roof for winter, and once in spring to survey the damage that harsh winter conditions rendered.

If you are looking to rid your roof of algae, debris or other unwanted presence, pressure washing your roof is not recommended

There are a number of roof cleaning issues that if left unchecked, can wreak havoc on shingles, shakes, and tiles, eventually leading to deterioration of the roof structure itself.