Algae Resistant Composite Roofing Shingles Save Time and Money

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Seattle area roof replacement and repair specialists, Johnson Roofing & Gutters, gives the best reasons to consider algae resistance options for a new composition shingle roof.

Composite roofing shingles are a very popular choice for sloped roofs. Durable and affordable, composite shingles perform well in the wet Pacific Northwest winters, offering a variety of options in texture and appearance. Unfortunately, algae and moss also do well on roofs in the Northwest, where wet weather accelerates algae growth, leading to unattractive stains.

Methods of treating composite shingles have been developed to combat this problem, but will surely add to the cost of composite shingles. Seattle roofer, Johnson Roofing & Gutters, still recommends using composite shingles with algae resistance to prolong the life of the roof and gives several good reasons for doing so.

Most algae resistance for composite roofing materials comes in the form of copper or magnesium pellets added to the granules found on composite asphalt shingles. These metals inhibit the growth of algae and prevents it from accumulating.

With recent advances in algae resistance technologies, there are now even more reasons to select composite shingles with this feature.

  •     Longterm Cost Benefit - Most composite shingles nowadays have some kind of protection from weather and natural growth built into them. The better working varieties will most likely be the more expensive choice, but will save money by needing to be cleaned with much less frequency. Consulting a Seattle roofing professional will help identify which are best.
  •     Less Damage From Cleaning - With less algae removal and roof cleaning comes less damage to the roof. Many roof cleaners use pressure washers to remove the black streaks caused by algae. This can blow granules off of composite roofs and reduce their integrity, prompting early replacement.
  •     More Choices, More Colors - Since the technology has been around for a while, companies have developed more color choices and shapes for their shingles. So, whether you are looking for the smooth look of 3-tab shingles or the textured appearance of higher end dimensional shingles, many options are available with the highest rated algae resistance technologies.
  •     Less Algae = Less Moss - Moss growth in the Northwest can be a big problem for roof integrity and maintenance. It forms a living barrier on the roof that absorbs moisture and causes premature aging and rot to shingles. Moss likes to grow on top of organic materials, which includes algae build-up. Keeping leaves and other organic materials off the roof is important, but discouraging algae growth is step one.

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Susanna Johnson
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