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If I put Zinc strips on my roof, what happens?

Posted March 10, 2010 by Patrick Morin
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At Roof Life of Oregon, we are often asked, “If I put Zinc strips on my roof, will it keep the moss from growing on it?” We think a picture says a thousand words. Take a look at this roof in Southwest Portland.Will a zinc strip keep the moss away?

This is the north side of the home. As you can see, the homeowner installed a zinc strip at the top of the roof.

Would you say the zinc strips are working?

As we can see, the zinc is only cleaning the first foot or two of the roof, then causing streaks on the rest of the roof as the rain runs down the roof.  Believe it or not, we have even seen moss growth growing only inches away from zinc strips on homes in the Portland area.

If your home is looking green these days, let Roof Life of Oregon come and take a look. We offer a 3 year treatment for composition roofs that will help your entire roof look better, last longer, and work right.

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