Roof Cleaning in Long Valley, NJ
Low-pressure soft wash that lifts black streaks, moss & algae without touching your shingles.
Roof Cleaning in Long Valley, NJ
If you drive through Long Valley and look up at the rooftops along Schooley's Mountain Road or out toward the farms off Fairview Avenue, you'll spot the same thing on a lot of homes: dark streaks running down the north-facing shingles. That's not dirt and it won't wash off in the rain. It's Gloeocapsa magma, a hardy algae that thrives in our humid Morris County summers and shady, tree-lined lots.
Gallo Bros is a family-owned exterior cleaning company based in North Jersey, and we handle a lot of roofs out here in the Washington Township area. Long Valley has everything from older colonials and farmhouses to newer developments up on the mountain, and many of them sit under mature oaks and maples. That shade holds moisture, which feeds algae and moss and shortens the life of your shingles.
We use soft washing, not pressure, on roofs. High pressure strips the granules off asphalt shingles and voids most manufacturer warranties. Our low-pressure method uses the right cleaning solution to kill the algae at the root, so the streaks are gone and stay gone longer. No walking damage, no guessing.
- Local crew that knows Long Valley homes
- Soft-wash & low-pressure methods that protect your surfaces
- Licensed, insured & background-checked
- Upfront pricing — same-week scheduling
More services in Long Valley
Roof Cleaning near Long Valley
Recent work in Long Valley
Real jobs, real Long Valley homes — straight from our crew's cameras.
What neighbors say
5.0 · 901+ 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
“Before and after photos attached. Gallo Bros Power Washing is a must. Our pavers were full of weeds which took me hours to pull out only to have to do again a week later when they grew back. With two short days, our pavers looked brand new. After the men power washed our pavers, my husband and I could barely believe they did not totally replace them haha When they arrived day 2 to fill in and sand the pavers, again we were speechless. Our yard looks completely new. We are so appreciative of the quick and professional work they did as well as the friendliness and quick responses we received. Highly recommend this service!”
Elizabeth LiPuma
“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 Long Valley — FAQ
Why does my Long Valley roof have black streaks?
It's algae (Gloeocapsa magma), not dirt. Our humid summers combined with the heavy tree cover common on Long Valley lots keep roofs damp, which lets algae and moss take hold, especially on north-facing slopes.
Will pressure washing damage my shingles?
Yes, on asphalt shingles it can. That's why we soft wash roofs using low pressure and a cleaning solution instead of blasting them. It removes the algae without knocking off the protective granules or voiding your shingle warranty.
How long will my roof stay clean?
Because soft washing kills the algae at the root rather than just rinsing the surface, results typically last several years. Homes under heavy shade may see it return sooner, and we're happy to talk through what to expect for your specific roof.
Do you service all of Washington Township and Long Valley?
Yes. We cover Long Valley and the surrounding Morris County area, including the developments up on Schooley's Mountain and the older homes down in the valley.
Can you also clean the gutters and siding while you're here?
Absolutely. Many customers pair roof cleaning with a house soft wash and gutter cleaning in one visit. We'll give you an honest quote for whatever you actually need.
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 · 901+ 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