In the cool, soggy climate of the Lower Mainland, moss and lichens are a common occurrence, but not only in the woods. You can find these hardy little plants on roofs too. Asphalt shingles, wood shakes, clay and concrete tiles, and even metal roofing are favorite growing spots for moss and lichens, particularly on the north-facing portions of a roof that receive less direct sunlight. These organisms can cause more than just cosmetic issues. Because they trap moisture against the surface of a roof, lichens and especially moss can dramatically shorten the lifespan of your roof.
If left alone to grow and spread, moss will typically shorten the life of a roof by at least 10 years. This is due to the moss’s ability to retain water like a sponge, which keeps the roof surface continually wet and causes it to deteriorate faster. When the water freezes during the winter months, the damage to the surface is worsened. The spread of moss roots can also lift the edges of shingles, allowing water to seep underneath and cause leaks. A mossy roof looks unsightly, lowering the curb appeal and overall value of your home.
Many homeowners are not aware that roof debris such as moss and lichens can void a roof warranty! However, with some preventative maintenance you can free your roof of this type of growth, saving additional time and money down the road. If this is a concern for you, Crown Residential Roofing can complete a comprehensive inspection of your roof and recommend the best ways to preserve and extend its life, or the best replacement options if necessary. Call us today at (877) 907-3066.