LEAKS
Similar to how a dam restricts water flow, moss and debris can do the same thing on your roof. Unlike dams this is usually not beneficial to you or anyone else. When debris and moss collect on your roof and clog up the natural water channels in your roof it can divert water to places it is not meant to go. This can result in unnecessary leaks.

ROOF FAILURE
When roofing materials are designed they are tested against normal elements. These are wind, rain, UV Rays and acid rain. They do not however test for moss and debris collecting on them. In fact most roofing manufacturers put exclusions in their warranties if the roof is not maintained. This is because of the prior issue of water diversion. But also the erosion that moss and debris can cause. Especially for asphalt roofing shingles.

GUTTER FAILURE
The gutters on your home are traditionally nailed into place. The nails go into the ends of the rafters that support your roof.

CURB APPEAL
Apart from all of the functional issues that moss and debris cause, it also looks darn ugly! One of the most important factors in selling a home is the outside appearance. Many people do not consider the fact that your roof makes up 25-50% of the aesthetic of their home’s exterior. Not only does this affect your home’s appeal, it can also affect it’s valuation.