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From the Rooftop Blog

Metropolitan Roof's From The Rooftop Blog keeps you up to speed on how to choose and maintain the best roof for your home or business.


Filtering by Tag: spring roof care

5 Ways to Prevent Moss on Your Roof

Kathleen Finn

We let you know why to get rid of moss and how! Now here's the skinny on how to prevent the moss from growing on your roof in the first place.

1.   The best way to prevent moss growth on your roof is to start with algae resistant shingles, which contain 10% copper granules. Copper prevents algal growth.

2.   Place copper or zinc flashing along each side of the roof, just below the ridge cap – 2-4” of metal should be visible on the roof. Water must be able to run over the strip in order to create an alkaline environment, which kills the moss.

3.    Maintain your roof by keeping leaves and other debris from accumulating on your roof and gutters. Moss proliferates in damp, wet environments.

4.    Maintain the area around your roof for the same reason. Keep tree limbs clear of your roof, so the roof gets plenty of sunlight and air circulation.

5.    Apply moss-prevention solutions to your shingles before moss gets a chance to set up shop. Use prior to the wet winter months and again, in early spring.

If you want to start fresh and it's time for a new roof, schedule a consultation with our sales team.

5 Ways to Remove Moss from Your Roof

Kathleen Finn

1. Use elbow grease and a long-handled scrub brush to scrub moss away. Avoid using a pressure washer as the intense pressure can remove granules from shingles and/or cause them to loosen.

2.  Use a diluted bleach and water solution (1:1), and apply directly to moss. Let it sit for 20 minutes or more and then rinse off with low-pressure water. Wear protective clothing including gloves and glasses or goggles. Avoid spilling runoff near edible plants.

3.   Sea salt and hot water is a low-tech approach that is safe for plants and surrounding vegetation. Spray saltwater mixture on moss and let sit 20 minutes. Scrub off loosened greenery. You may need to repeat this process for a few cycles.

4.   Zinc chloride is an effective moss removal agent yet it can damage surrounding vegetation. Use prior to fall rains or in early spring to avoid run-off into public water supply. Zinc chloride can be used in 62% or 13% concentrate. The 13% concentrate requires no water, so apply this directly. If using the higher concentrate, dilute as directed.

5.  Prevent moss before it gets a toehold. When installing a new roof, choose moss resistant shingles. These shingles are crafted with copper granules (10%), as copper naturally hampers algae growth.

Learn more about our roofing services, schedule a consultation with us.