St Louis Roofing: Article About Dangers Of Moss
Unlike mold, moss itself is mostly harmless. It doesn't contain spores or fumes that are dangerous to people, and it's not heavy enough to cause damage to a roof on its own. However, moss does attract moisture. Humidity and rainwater, which usually dry on their own, can get trapped on a roof by the presence of moss. Roofers warn that this constant dampness can greatly shorten a roof's lifespan.
According to an experienced St Louis roofing company, exposure to constant moisture causes shingles to age much more quickly than they would in drier conditions. They can begin to weaken or even rot, which increases their susceptibility to sustaining damage from high winds and rain. In turn, that weather damage can lead to widespread leaks that may require a complete roof replacement. The moisture can also cause mold to grow. Mold can thrive on just about any damp surface, and the best way to keep it at bay is to minimize the moisture that's present on the roof. This means that it's important to eliminate any moss that may be present.
Moss can be killed with a mixture of bleach and water. After spraying the moss with this solution, it can be scrubbed off the shingles. For stubborn or severe moss problems, letting the mixture of water and bleach sit for 15 to 20 minutes may make it easier to scrub the moss off of the roof.
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Avoid using a power washer to remove moss. While it may be tempting to use a power washer instead of having to manually scrub off the moss, the force of the water can cause damage to the shingles. For the same reason, be careful when scrubbing to make sure not to damage the shingles. Homeowners who are nervous about working on the roof or not entirely confident that they can remove the moss on their own should call a roofing professional. Most roofers will be happy to assist with moss removal.
Once the moss has been removed, it's important to take steps to prevent it from returning. Since moss thrives best in shady areas, trimming any tree branches that hang over the roof can be effective. Installing strips of copper or zinc along the roof ridge can also deter the growth of moss. Once moss has been spotted on a roof, continue to keep an eye on it for new growth.
In addition to the potential for lasting structural problems to the roof, moss growth is unsightly. It's relatively easy to remove, however. By responding quickly, the dangers of moss can be mitigated entirely.