Roof Cleaning in Lehigh Valley
Soft wash roof cleaning that removes black algae streaks, moss, and lichen without damaging your shingles. Serving Allentown, Bethlehem, and Easton.
What's Included
Protect Your Roof, Don't Destroy It
Your roof is one of the most expensive components of your home — and one of the most neglected. In Pennsylvania's humid climate, black algae streaks, green moss, and gray lichen colonize asphalt shingles within just a few years. Many homeowners don't realize that these aren't just cosmetic issues. Moss holds moisture against shingles, accelerating decay. Algae eats the limestone filler that gives shingles their UV protection. Left untreated, organic growth can shorten a 25-year roof's life by 30–50%.
The worst thing you can do is blast your roof with high-pressure water. That strips protective granules, voids warranties, and forces water under shingles. Neptune Pressure uses a soft wash approach specifically designed for roofing. We apply a cleaning solution at low pressure — gentler than a rainstorm — that kills algae, moss, and lichen at the cellular level. No scraping. No high pressure. No walking on your shingles more than necessary.
We protect your landscaping by pre-wetting plants and rinsing thoroughly after application. Your gutters get flushed to remove any solution runoff. The result is a roof that looks dramatically better and lasts longer — protected, not punished.
Every Roof Cleaning Includes
- Low-pressure soft wash application
- Roof-safe cleaning solution for asphalt shingles
- Black algae streak removal
- Moss and lichen treatment
- Gutter rinse to remove runoff
- Before & after photos included
Transparent Pricing
Roof Cleaning Pricing
Pricing is based on roof square footage and pitch. Text us photos for an exact quote.
Steep pitches, tile roofs, or heavy moss may add $100–$200. We'll confirm in your quote.
Service Area
Roof Cleaning Across the Lehigh Valley
Common Questions
Roof Cleaning FAQ
Is pressure washing safe for asphalt shingles?
No — high-pressure washing is not safe for asphalt shingles and will void most manufacturer warranties. We use a soft wash method: low-pressure application of a roof-safe cleaning solution that kills algae, moss, and lichen at the root. The dead growth washes away naturally with rain over the following weeks, leaving your shingles intact.
What are the black streaks on my roof?
Those black streaks are Gloeocapsa magma, a type of airborne algae that feeds on the limestone filler in asphalt shingles. It spreads from roof to roof via wind and is extremely common in Pennsylvania's humid climate. Left untreated, it holds moisture against your shingles and shortens roof life. Our soft wash treatment kills the algae and restores your roof's appearance.
How long does roof cleaning take and when will I see results?
Most roof cleanings take 2–4 hours depending on size and pitch. You'll see immediate improvement in algae streaks within 24–48 hours. Moss and lichen turn white or brown as they die and typically wash away within 2–6 weeks with normal rainfall. We never scrape or scrub moss off shingles — that causes granule loss and damage.
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