Dublin homeowners often notice dark streaks, green patches, or moss forming on their roofs after foggy mornings or rainy weeks. These stains are caused by algae, lichen, and mold that thrive in the city’s mix of sun, shade, and moisture. If left untreated, they can eat away at shingles, cause leaks, and ruin your home’s curb appeal. At PPWPM (Professional Power Washing & Property Maintenance), we specialize in algae and lichen treatment in Dublin using gentle soft wash roof cleaning techniques that safely restore your roof and extend its lifespan.
Why Roof Algae and Lichen Are Common in Dublin
Dublin’s microclimate features cool mornings, inland fog, and pollen from surrounding hillsides and oak trees. These conditions allow Gloeocapsa magma, a type of blue-green algae, to spread across shingles and tiles. The black streaks it leaves behind not only make roofs look aged but also absorb more heat, raising attic temperatures. Moss and lichen trap moisture, leading to rot, roof mold, and early shingle failure if not treated promptly.Why Pressure Washing Isn’t Safe for Roofs?
Pressure washing might seem like an easy fix for roof stains, but it often causes damage. The force of high-pressure water can strip protective granules, loosen tiles, and void manufacturer warranties. Dublin homes often have a mix of composite shingles, tile, and wood shake roofs that require care. That’s why PPWPM uses a soft wash roof system that removes algae, moss, and lichen with low pressure and an eco-friendly roof cleaner designed specifically for delicate surfaces.Our Professional Algae & Lichen Removal Process
- Inspection – We evaluate the roof for algae, moss, and stains while checking for damage or worn shingles.
- Soft Wash Treatment – Using low pressure, we apply a biodegradable cleaning solution that dissolves and kills algae and lichen at the root.
- Deep Cleaning – Our process prevents regrowth for up to three years while restoring the original color of the roof.
- Gentle Rinse – We rinse away residues without affecting tiles, shingles, or flashing.
- Full Protection – Gutters, landscaping, and windows are covered and rinsed for complete safety.
Benefits of Professional Roof Cleaning in Dublin
- Removes black streaks, algae, and roof stains caused by Gloeocapsa magma.
- Prevents roof deterioration and expensive repairs.
- Improves curb appeal and property value.
- Uses safe, biodegradable products that protect plants, pets, and families.
- Backed by PPWPM’s $5,000 Satisfaction Guarantee and 500+ verified five-star reviews.
Frequently Asked Questions
- What are the black streaks on my roof? They’re caused by Gloeocapsa magma, a type of algae that grows on shingles in humid conditions like Dublin’s.
- Can lichen and moss damage my roof? Yes. Lichen roots and moss hold moisture, which weakens shingles and leads to early roof aging.
- Is soft washing better than pressure washing? Yes. Soft washing uses low pressure and safe cleaners to remove stains without damaging your roof.
- How long will my roof stay clean? Most roofs stay clean for 24–36 months depending on shade, humidity, and maintenance habits.
- Do you work on commercial or HOA properties? Yes. We clean roofs for HOAs, schools, and commercial facilities throughout Dublin and the Tri-Valley area.