It’s green, it’s slimy, it’s downright gross. What’s even worse is that it can lead to serious issues for your roof if the problem isn’t addressed in a timely manner.

What is it?

Algae, of course.

Roof algae is a serious problem — it can lead to moisture infiltrating your roof, leading to the development of mold, and even produce unsightly stains. The good news is, you don’t have to live with it.

There are several tips you can use to get rid of roof algae and even prevent it from coming back. Keep reading to learn more.

Replace the Roof

A bit extreme? Yes! Effective, definitely.

Replacing existing shingles with ones that are darker to disguise staining, or even shingles made with copper granules, are effective. After all, the copper granules are lethal to algae.

This option only makes sense if the shingles are already worn out and ready to be replaced.

Clean the Roof

A less expensive and less extreme method is to create a cleaning solution for the roof. To do this, mix 50 percent water with 50 percent bleach.

Make sure you don’t use a pressure washer for the cleaning process. These tend to cause more damage to shingles than help.

Before getting started, make sure to wet the foundation plantings first. When the cleaning process is done, clean everything with water. This works because plants don’t like bleach.

Preventing Algae from Coming Back

If you want to make sure algae doesn’t come back after you have cleaned your roof, then install a strip of zinc- or copper-coated sheet metal on each side of your roof, just under the ridge. For it to be effective, two to four inches of the metal needs to remain visible on the roof.

Even though copper is more toxic to algae, the galvanized sheet metal is not as expensive. Both galvanized metal and copper are available to purchase in various thicknesses and widths online and from local hardware stores.

Safety Considerations

Any time you work on your roof, risks exist. It’s also extremely hazardous when the roof is wet. This means you need to take the proper safety precautions to make sure neither you nor anyone else is injured while this work is done.

Some other safety tips to keep in mind include:

  • Avoid doing work on steep roofs
  • Use a safety rope
  • Have someone on the ground, holding the ladder
  • Wear slip-resistant shoes
  • Protect your eyes and skin when using chemicals

Also, as mentioned above, bleach is dangerous for plants. As a result, you need to wet down shrubs, grass, and other plants where runoff may occur before using the bleach. The water is going to protect them.

Getting Rid of Roof Algae: Now You Know

Roof algae is unsightly and potentially damaging to a roof. As a result, it’s essential to take steps to get rid of it and keep it from coming back.

If you need help with this process, be sure to contact us. We can help ensure you get the clean, damage-free roof you need.