Preference on appearance varies, but once you notice a buildup in debris, change in color, or increase in small spots on the roof, there is likely moss nestling under the shingles. The longer you wait to clean your roof, the more difficult the moss becomes to remove. So it is best to eliminate it as soon as possible.
In general, roofs and gutters should be cleaned every 9-12 months. However, the time frame could be shorter depending on factors like; amount of shade, overhanging and surrounding trees/branches, and the climate of the area you live in.
No - If you have an asphalt roof, you should NEVER use pressure washing, the pressure will strip away granules from the shingles causing major long term damage.
The Spring and Fall months tend to be when more roofs require more maintenance due to rainfall and the overall climate. However, as soon as you see moss or large buildup of debris on the roof, you should make arrangements to clean your roof.
Absolutely! As the saying goes, you only have one chance at a first impression and your roof is the first thing potential buyers will see. A dirty or discolored roof can give the impression that the rest of the house is not well-maintained, which could make it more difficult to sell or lower its value by thousands or more. It is also likely the home inspector will request the roof be cleaned during the inspection period anyway, so it is better to get ahead and allow your house to be appreciated by as many people as possible.
