Auburn Roofing: Article About Mossy Roofs
Densely wooded areas and moisture-laden climates create beautiful scenery and peaceful communities, but they are tough on roofs. In addition to dealing with ever-present rain, roofs in these areas frequently battle moss that flourishes in moist, dark environments. Luckily, preventing moss formation is easily handled when homeowners work with a trusted Auburn roofing contractor to find the best preventive measures for their homes.
Moss thrives in wet, shady, slightly acidic conditions, and it can burrow into asphalt shingles when left untended. The best preventive measures involve changing those moss-friendly conditions. First, homeowners should remove tree branches that shade the roof to maximize available sun exposure.
Annual roof maintenance, cleaning and inspection by a reliable, experienced roofer also helps inhibit moss growth. This is not a do-it-yourself task. Residential roofs are usually steeply sloped and slippery, and moss-covered roofs are even slicker and more dangerous for the untrained. Also, the moss-fighting chemical cleaning solutions found at many home improvement stores can damage asphalt shingles if left on the roof too long. On the other hand, expert roofers have the skill and understanding of the roof structure to be able to clean it professionally and eliminate moss without causing damage.
When it comes to altering the roof's acidic pH conditions that promote moss, some people swear by zinc, copper or galvanized steel strips attached to the roof's ridge line.
Have a question regarding roof cleaning or commercial roofing? Please ask the roofers from Chase NW of Auburn WA.
Moss thrives at a pH of 5.0 to 5.5, which just happens to the be the pH of most precipitation. When rain hits the zinc or copper ridge strips, though, it picks up trace amounts of metal. Those metal traces alter the rainwater's pH as it glides down the roof, inhibiting moss growth. The effect only carries about eight to 15 feet, so longer roofs need additional metal strips installed partway down the roof slope.
Roof manufacturers are also working to address the moss issue by offering asphalt shingles treated with zinc. Whether homeowners choose zinc-enhanced shingles or more traditional metal strips, they should be aware that there are some disadvantages to the solution. Metal traces can wash onto the homeowner's lawn and into the storm drains, damaging plants and potentially polluting rainwater run-off.
Working with a roofer who is experienced in the local climate can help homeowners decide what methods best keep their roofs safe from moss. In many cases, homeowners may be able to avoid environmentally unfriendly methods simply by having their roofs professionally maintained and inspected by a trusted roofer every year.