What does roof washing entail?

Roof washing is a professional cleaning service designed to safely remove algae, moss, lichen, mold, and other organic buildup from your roof. If your roof has black streaks or moss, roof washing will remove the streaks and/or organic growth and make the roof look new once again. The black streaks are called gloeocapsa magma. This is a bacteria that feeds on asphalt shingles. Over time, these contaminants not only make your roof look dirty and aged but can also cause long-term damage if left untreated. Roof washing helps restore your roof’s appearance and extends its lifespan.

Removing moss from a roof is essential for preserving the integrity and lifespan of your shingles (below are images of before and after treatment). Moss traps moisture, which can lead to rot, leaks, and premature deterioration of roofing materials. When treated properly—typically with a sodium-based moss killer or soft wash solution—the moss turns white, indicating that it's dead. While it may look unsightly at first, this whitening is a sign the treatment is working. Over the next 1 to 3 months, natural weather elements like rain and wind gradually break down and wash away the dead organic matter, leaving your roof clean and protected without the need for aggressive scrubbing or damage. Regular maintenance keeps your roof efficient, safe, and looking its best.

Unlike traditional pressure washing, roof washing uses a gentler method known as "soft washing." This involves applying specialized cleaning solutions at low pressure to break down and kill organic growth without damaging roofing materials. High-pressure washing can be too aggressive and may dislodge shingles or strip protective coatings, so soft washing is the industry-preferred method for roof care.

Regular roof washing:

• Improves curb appeal

• Helps prevent costly repairs or premature replacement

• Keeps your property looking clean and well-maintained

Whether you have asphalt shingles, tile, metal, or another type of roofing, professional roof washing is a smart investment in the health and beauty of your home.