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
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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 · 854+ 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
“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
“Holiday Outdoor Lighting Gallo Brothers Experience I always wanted outdoor lighting - but, never felt comfortable with other roof lighting companies - people, creativity/passion, equipment safety, timing - ability to handle challenging roof layout …. and concerns regarding ability to deliver The Gallo Brothers checked all of the boxes: Incredibly professional Went above and beyond - the roof was a challenge - other companies wanted to do lights along gutter line only because the roof had too many steep peaks and Gallo Brothers created a custom lighting solution across the entire roof. They had complete confidence that they could deliver and they killed it.. The Gallo Brothers are bright, young and hungry …. Experience for me was totally stress free The Gallo Brothers offered Creative design options/solutions They have the appropriate equipment to perform work in a safe efficient manner The Gallo Brothers Team was not only friendly and kind but, highly skilled. They were focused and enjoyed doing their job. They were very careful with equipment and determining safest way to get around complex roof and lawn and landscape Efficiency and punctuality are hallmarks of Gallo Brothers service I just chose the bulb color ... and had them walk me through all of the options. The pricing was fair and reasonable compared to their competitors. The other competitors were more expensive and offering was a lower level product (example - boring gutter line lights vs entire roof lighting experience) The Gallo Brothers were very transparent throughout entire process They over delivered from the picture that they designed and I approved in the beginning The work and lighting product experience speaks for itself - family, neighbors and friends love it I was blown away when the lights came on the night that I was home with family. It was such an incredible experience. I didn’t want to leave home for family event that night. It brightened up the entire block and created many smiles My kids asked me why I didn’t do the home lighting many years ago …. I would strongly recommend the Gallo Brothers to anyone who wants to light up their home and neighborhood and who want a hungry team of skilled professionals - who love what they do - and will design and deliver a bright experience with no stress. *I would also recommend locking them in soon before their capacity is dedicated to my neighbors and friends who were very impressed with them”
Anthony Martucci
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 · 854+ 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