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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: Roof maintenance

Is It Time for a New Roof?

Kathleen Finn

It's home-buying and selling season and thoughts turn to roofs. Are you wondering if it's time to retire your old roof and trade it in for a new one? Here’s a checklist to help you determine if it’s time!

  • Roof shingles are falling apart or missing.
  • Curling or buckling shingles, in particular on the south-facing side of your house. You want your shingles to lie flat.
  • Damaged roof valleys. These can make your roof susceptible to leaks.
  • Shingle granules in gutters. Roof shingles start to shed loose granules toward the end of their life cycle.
  • Leaks and light in the attic. Are you seeing stains or streaks in your attic? Is light shining through in some areas? Those are signs of a weakened roof.
  • A sagging roof. It’s an obvious sign of a tired roof. Poor roofing material or weakened shingles due to excessive moisture or weight (think snow) can bow the strongest of roofs. You may also have a structural issue with your internal framing.
  • Excessive home cooling costs. These can be the result of too much heat seeping through the roof. Inadequate ventilation in warmer months requires the cooling system to run excessively.
  • Dark or stained areas on roof. Protective granules on your shingles may have worn away, thus allowing for the growth of vegetation, fungus, algae or mold.
  • Damaged flashing. The material that wraps around your vents, chimney or skylights will degrade over time and can create leaks. In older homes, cement or tar was used for flashing. If yours is showing signs of age, consider upgrading to metal flashing.

If your roof is fairly new and you are experiencing any of the above, you might simply be due for some roof maintenance or some simple upgrades. Give us a call at 206-248-3737 or schedule a free consultation and we will come and check it out.

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.