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Jacksonville Roofing: Article About Treating Algae Growth On Roofs

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Living in a warm, humid climate certainly has its perks, but it can work against a home's roof. As homeowners in these climates can attest, humid air is perfect for growing algae, and because the roof is constantly exposed to the elements, shingles and tiles often fall victim to these green invaders. If there's a major infestation, homeowners should call in Jacksonville roofing professionals, but minor growth can easily be treated at home.

Removing algae requires a three step process of killing, removing and preventing it. It's important to remember that algae growth won't harm shingles; it's merely an aesthetic nuisance. The most common type of algae growth is Gloeocapsa magma, blue green algae that actually appears as black streaks on tiles and shingles. Some homeowners go as far as installing new shingles that are dark in color to hide the staining. Other manufacturers make asphalt shingles that are imbedded with copper. Copper is lethal to algae, so these shingles are safe from algae growth.

If new shingles are out of the budget, there are cheaper and simpler solutions. Homeowners can create a 50 percent mixture of water and bleach to kill the algae.

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Some people think applying this with a pressure washer will be ultra effective, but pressure washers can actually damage shingles. Before applying the solution, plants around the house should be sprayed with water and rinsed afterwards to keep the bleach from killing them.

If this natural solution doesn't do the trick, there are stronger chemicals to battle the algae. Commercial algaecides can be applied to the roof in the spring or summer to kill the previous year's algae and reduce the likelihood of any future regrowth. They can be applied with garden sprayers, a mop or brushes.

The third step is preventing the algae from coming back. Roofing professionals can put strips of zinc or copper under the shingles at the peak of the roof. The professionals will leave an inch or so of the strips exposed to the weather, so when it rains or snows, the metal's molecules will run down the roof to kill existing algae and help prevent any regrowth.

Thankfully, algae won't damage a roof, but it does bring down a home's curb appeal. Homeowners can easily reverse the unsightly effects of algae on their own, or they can turn to their local roofing professional if they need a little more assistance. Either way, this is an easy fix, and prevention will go a long way towards fixing it.

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