Black streaks? Not anymore.
Zero-pressure roof cleaning that removes algae streaks, moss, and lichen the way shingle manufacturers specify – chemistry, not force. Backed by a 5-year streak-free promise.
Know your enemy
The streaks are alive
That’s Gloeocapsa magma – airborne algae that lands on your roof and eats the crushed limestone inside your shingles. It spreads downhill with every rain, which is why the streaks point down.
- It shortens roof life – the algae holds moisture and literally consumes shingle filler.
- It loves north slopes – less sun, more moisture. That’s why one side is always worse.
- Pressure makes it worse – blasting strips granules and voids warranties. Soft wash kills it at the root.
- Moss & lichen too – treated the same visit; they release and wash away over the following weeks.
Manufacturer-approved method. We follow ARMA (Asphalt Roofing Manufacturers Association) guidance: a soft wash solution applied at garden-hose pressure, never mechanical pressure. Your shingle warranty stays intact – in writing.
Treatment day
How a roof treatment goes
Protect below
Gutters diverted, landscaping pre-soaked and covered, walkways tarped. The roof gets treated; nothing else does.
Apply solution
Soft wash mix applied from ladder line or lift – we walk roofs only when pitch and safety allow.
Let it work
Streaks vanish same-day or within days; moss and lichen brown, release, and shed over 2–6 weeks naturally.
Rinse & report
Landscaping rinsed thoroughly, gutters checked, photo report sent. 5-year promise documented on your invoice.
Straight pricing
What it costs
Driven by roof size, pitch, and stories. Quoted exactly from satellite measurements before we book.
| Roof | Typical price | Time on site | Streak-free promise |
|---|---|---|---|
| Single-story, walkable pitch | $449 | 2–3 hrs | 5 years |
| Two-story, standard pitch | $549 | 3–4 hrs | 5 years |
| Steep / complex rooflines | $649+ | Half day | 5 years |
| Moss & lichen treatment | +$99 | Same visit | Included |
Metal, tile & slate roofs welcome – each gets its own method · ask during your quote
Is the 5-year promise for real?
Will my plants be okay?
The moss didn’t all come off the same day – normal?
Should I just replace the stained shingles?
Pairs well with
Finish the look
House Washing
Clean roof, clean siding – the full top-to-bottom reset. Bundle and save.
Gutter Brightening
We’re already at the roofline – the smartest add-on on the menu.
Driveways & Concrete
Finish the curb view from ridge cap to curb line.
Stop feeding the streaks
Free roof assessment from satellite + your photos. If it doesn’t need cleaning, we’ll say so.
Zero pressure on shingles · 5-year promise · Warranty safe