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Ideally, you will tackle removing algae from your roof during spring or summer when the weather is drier and warmer. Because algae tends to grow during the colder and wetter months, you want to tackle this project before the temperature drops to hopefully keep it from coming back at all.

Vinegar will not damage your roof shingles. Using vinegar to wash your roof is an effective and popular cleaning method for asphalt shingles. You can buy white vinegar with varying concentrations of acetic acid. Typically, 5% is all you need for a good roof cleaning, but if you’ve got stubborn stains or moss you can go as high as 25%.

While DIY cleaning is feasible, it's risky without proper equipment or experience. Hiring professionals ensures safety and effectively avoids damage.

Bleach and vinegar can both kill moss effectively. However, if you’d rather use a non-chemical option that’s better for the environment, vinegar is the choice. Depending on the paver material you use, vinegar and bleach can also stain or discolor the surface. When unsure, test and use the option that doesn’t react with your paver material.