Algae Up On Your Roof? Learn How To Protect It
There are several things that will cause damage to your roof, and you need to take action to prevent and repair damage if you want your roof to last a long time. While rain and wind are common things that can cause damage, homeowners with asphalt shingles also will have to deal with algae. Algae is common in climates that are humid, or if the roof is in the shade due to surrounding buildings or trees. The algae will grow due to excessive moisture that is on your roofing material. Here is how you can identify roof algae, prevent it from growing, and get rid of it for good.
A clear sign that you have algae growing on the roof of your home is if you can see black spots. This will usually appear on the roof's northern side because it does not receive as much direct sunlight. Algae also travels in the air, so if your neighbor has a problem with algae, you may have a problem as well.
Algae has a hard time forming if the water that runs over your roof has traces of copper in it. If you look closely at the roof, you might have already notice that algae is not growing in places where water touches a piece of copper on the way down the shingles. That is why a metal roof cap works so well at preventing algae from growing. It is made out of copper, and installed at the peak of your roof. The cap works by allowing the rain water to wash over the roof cap and flow down your entire roof, coating it with trace amounts of copper that prevent algae growth.
Other alternative methods for preventing algae include coating your shingles with a protective copper coating that algae cannot form on. If the roof is in the shade caused by a nearby tree, simply trim the tree branch to expose your roof to more direct sunlight.
The easiest way to remove algae from a roof is to scrape it away with something soft, such as a broom. Using a high-powered pressure washer or scraping the roof with a sharp object can damage the shingles. Once the algae is gone, you can then use a preventative measure to stop it from coming back.
Don't feel confident about doing these things on your own? Contact a local roofers that can take care of the whole process for you.