The areas of your roof that are shaded and exposed to periodic, damp, cool weather conditions are more likely to experience moss growth. The presence or absence of sunlight on your roof is a determining factor in the amount of moss & algae growth on your roof. The more sun, the less growth you should find.
Roof Damage from Moss & Algae
Moss & algae are more than just a cosmetic issue on roofing materials. They hold moisture against the roof surface and reducing the life of your roof. In freezing climates, moss speeds the wear of asphalt shingles by increasing frost damage to the granule coating on the shingles. While both moss & algae don't look that great, moss is more of a threat than algae. Algae is thinner and therefore will hold less water than a moss covering would. However, algae does have a tighter hold and trying to clean it off could cause damage to the roof.
Cleaning Moss & Algae
Be sure to avoid aggressive cleaning methods as you do not want to damage your roof. If you are unsure of being able to clean your roof, consider getting a free roof inspection at the Lake of the Ozarks. A professional roofer will be able to tell you if your roof needs cleaned, repaired or completely replaced. If your shingles are worn out and fragile, it will be nearly impossible to clean them without causing more damage. In this case, a new roof is needed and you should call a Lake of the Ozarks roofing professional. It is possible to remove moss from a roof by gentle cleaning using a soft brush or a soft washing. Power washing is not recommended as it can damage the shingles, especially asphalt shingles by removing the granules. Gently using a flexible leaf rake to remove moss is another option. Be sure to wash excess debris off with a garden hose so it does not get stuck in the gutter system.
Some roofing materials contain algaecides or funicides which will provide resistance to moss & algae growth. Installing galvanized metal, copper or even aluminum flashing can reduce growth down roof. Mineral salts washing off the metals will reduce moss or algae growth on those shingles. Installing metal strips along the edge of an existing mossy roof will slowly kill the moss & algae. Other tips for prevention or reduction of moss & algae include:
- Giving the roof more sunlight by trimming back tree branches.
- Minimizing debris accumulation to provide a less inviting environment for growth.
- Using a non-abrasive cleaning method to regularly remove any debris build-up.
- Directing air flow down the slope to avoid driving debris under the edges of the shingles.
- Keeping gutters clean to promote proper water drainage.
- Treating the roof with moss & algae killing chemicals.
If you have a moss or algae problem on your roof, give Above & Beyond Roofing a call! With over 15 years experience, our Lake of the Ozarks roofing company has the knowledge to take care of all your roofing needs. From minor repairs to entire roof replacements, we can get the job done quickly and professionally. Contact us at 573-302-0354 about your next roofing project!
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