How Often Should I Clean Off My Roof?

Here are some good reasons to have your roof cleaned to remove algae, lichens or moss: 1) Organisms such as algae, lichens and moss can be feeding off the organic material in your shingles. They need to be cleaned away to stop the damage to your roof. 2) Prevent wood rot by removing roof algae, lichens and moss. These organisms can eat through your shingles and into your roof deck causing moisture to get into cracks. This can result in mold growth,. 3) Roofs covered with algae, moss or lichens do not efficiently reflect sunlight which causes shingles to absorb heat. This may increase the heat in your attic, raising cooling costs. 4) Your insurance company may require that homeowners clean their roofs as part of roof maintenance. 5) Cleaning your roof can save the homeowner the cost of re-roofing and increase a home's curb appeal. 6) Avoiding damage to your roof can prevent animal and insect invasion.