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Chesapeake Roofers: Article About Roof Cleaners

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Finding large tufts of moss on the roof is not only annoying, but it can also result in drainage and moisture problems if the situation isn't promptly taken care of. Removing mossy growths is tricky and must be done carefully in order to avoid causing further damage to the rooftop. Professional Chesapeake roofers can help homeowners get rid of stubborn moss that resists cleaning techniques.

Moss enjoys damp surfaces and high humidity levels. It also prefers shade and a relatively warm environment. A rooftop offers all of these, as heat can escape from the attic to provide year round warmth, while shade from nearby trees allows the shingles to stay damp. Once a moss colony starts to grow, it will send out roots and occasionally release spores that will land nearby, establishing further colonies.

Mosses absorb moisture and keep the roof's surface wet. Shingles or tiles that are constantly damp may begin to rot. The saturation of the roofing material can spread into the felt, underlay and, eventually, the roof's wooden decking. This can cause the roof's support structure to weaken or even collapse.

Getting moss off the home's roof should be a priority. A handy homeowner can take on this task with a few supplies that include a margin trowel, a hammer, silicon caulk, roofing cement, zinc strips, roofing nails and five gallons of diluted bleach solution.

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A ladder is also needed to access the roof and should be placed on a hard, level surface.

The diluted bleach should be loaded into the garden sprayer. While this solution is toxic to mosses and lichens, it will not damage the asphalt or other types of shingles or tiles. Nearby plants on the ground should be covered with tarps while the rooftop is being sprayed. The homeowner can then climb the ladder and spray all the surfaces of the rooftop with the bleach mixture.

Once the roof is dry, the homeowner can then take some preventive actions to stop any new moss, algae or lichen colonies from taking hold. This project is more laborious and involves the installation of thin strips of zinc metal. To do this, a margin trowel is used to lift up a layer of shingles. A thin strip of zinc is slid underneath the top row of shingles and held into place with galvanized steel roofing nails. The nails are hammered into the roof and dabbed with a bit of silicon caulk to create a waterproof seal. The homeowner should continue this process all the way around the roof's peak.

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