Roof Cleaning in Clinton, NJ
Low-pressure soft wash that lifts black streaks, moss & algae without touching your shingles.
Roof Cleaning in Clinton, NJ
If you've driven along Route 31 or up through the neighborhoods off West Main Street, you've seen it: those ugly black streaks running down otherwise nice roofs. That's not dirt and it won't rinse off in the rain. It's a hardy algae called *Gleocapsa magma*, and around here it thrives. Clinton sits in the Raritan River valley, and the humidity that hangs in the low-lying spots along the South Branch gives that algae exactly what it wants to spread across your shingles.
We're Gallo Bros, a family-owned exterior cleaning company working throughout North Jersey and Hunterdon County. For roofs we use **soft washing**, not high pressure. That matters. Blasting an asphalt roof with a pressure washer strips the granules and voids most shingle warranties. Soft washing uses a low-pressure application that kills the algae, moss, and lichen at the root so it stays gone longer.
A lot of Clinton homes are older colonials and farmhouses with steeper pitches, plus newer developments with architectural shingles. We handle both. We'll walk your property, tell you honestly what your roof needs, and give you a straight price. No pressure, no upsell games.
- Local crew that knows Clinton homes
- Soft-wash & low-pressure methods that protect your surfaces
- Licensed, insured & background-checked
- Upfront pricing — same-week scheduling
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What neighbors say
5.0 · 882+ Google reviews“We hired Gallo Bros Power Washing to power wash, re-sand and seal our 20 year old paver patio and front walk. They also performed a few repairs and reset a few areas that needed attention. We had never had this done professionally before. From the beginning estimating phase to the final coat of sealer, we were very happy with the services provided, the price and the final result, which they also warrantee for 1 year. I highly recommend Gallo Bros. Power Washing and will use them for other services in the future.”
Andrew O
“Gallo Bros did an amazing job power-washing my home and roof. They assured me that if I had any concerns they would avail themselves to resolve them. After the cleaning a few leaves blocked the gutter after a heavy rain. They responded quickly and courteously, removing the blockage touched up ,y skylights as well. Before leaving they made sure I was satisfied. Oscar and his team came a few weeks later and sanded and sealed my paver walkway. They were polite and professional, explaining what they were doing, how long it would take, and instructions to ensure the best possible result. What I loved most was the professionalism in their communication. There were several days that we were rescheduled due to heavy rains and storms. The first thing they assured us of was their intent to make sure the job was done correctly. They would not come out to do the work, only to have it washed away. They stayed in contact every step of the way and I felt more than comfortable that the job would get completed the right way. If they couldn’t reach h me by phone they always left a voicemail or sent a text. I just happened to call them first in my search for roof cleaning, but I will never have to look further for these services again. I was really so impressed. Thank you Gallo Bros!”
Kim Wells
“I wanted power wash my backyard deck for a long time but they said it cannot be done due to the equipment was not accessible however Gallo Brothers had very long 400feet hose and did the power wash which was not done for many years. I am very happy they did a very good job specially Mark was very helpful to do front porch and walkway. It is speck clean this is exactly what I wanted to do. I do highly recommend Gallo Bothers meticulous job.”
Chong Cho
Roof Cleaning in Clinton — FAQ
Why does my Clinton roof have black streaks?
Those streaks are algae, most commonly Gleocapsa magma. It spreads fast in humid, shaded conditions, which is common in the Raritan valley and wooded lots around Clinton. It feeds on the limestone filler in asphalt shingles, so it will keep spreading until it's properly treated.
Will pressure washing damage my roof?
High pressure can, yes. It knocks the protective granules off asphalt shingles and can force water under them. That's why we use soft washing on roofs, a low-pressure method with a cleaning solution that kills the algae and moss without the physical damage.
How long does soft wash roof cleaning last?
Because soft washing kills the organism at the root rather than just rinsing the surface, results typically last several years. Roofs under heavy tree cover or in shaded, damp spots may regrow sooner, and we can talk through options for those situations.
Do you clean moss and lichen too?
Yes. Moss and lichen are common on shaded, north-facing roof sections around Hunterdon County. Our soft wash treatment addresses moss and lichen along with algae streaking.
Do you serve all of Clinton and the surrounding towns?
We cover Clinton and the broader Hunterdon County and North Jersey area. If you're nearby and not sure whether we reach you, just ask when you call for a quote.
How much does roof cleaning cost in NJ?
It ranges widely — from a few hundred dollars for a small ranch to several thousand for a large, steep or complex roof. Size, pitch, material, access and how much algae has built up all factor in. You get a firm price up front, free.
Will roof cleaning damage my shingles?
No. We soft wash with low pressure and a cleaning solution — the method asphalt-shingle makers recommend. High-pressure washing is what damages roofs; we never do that on a roof.
What are the black streaks on my roof?
That's a hardy algae called Gloeocapsa magma. It feeds on the limestone in your shingles and spreads in New Jersey's humidity. Soft washing kills it at the root, not just the surface.
How long does a roof cleaning last?
Usually 2–4 years. Because soft washing kills the algae instead of just rinsing it, the clean lasts far longer than a quick power-rinse.
North Jersey · 882+ five-star reviews
Pick your own time
Choose a slot that actually suits you and it's confirmed on the spot — no phone tag, no waiting on a callback.
- A real person comes out and prices the work in front of you
- Exact price before anything starts, in writing
- Free, and there's no obligation to book the job
Rather talk it through?
(973) 500-8155info@gallobrospw.com