House Washing in Mendham, NJ
Gentle soft wash for siding, stucco & brick — dirt, mildew and spiderwebs gone in one visit.
House Washing in Mendham, NJ — Soft Wash Done Right for Cedar, Stucco & Vinyl
Most of the house washing calls we get around Mendham come down to one thing: trees. Whether you're on a older lot near Main Street in the borough or out on one of the newer wooded subdivisions off Tempe Wick or Cold Hill Road, the tree cover that makes these properties beautiful is exactly what keeps the north and east sides of your siding damp and green.
That shade, plus the humid stretch North Jersey gets from July into September, feeds green mildew on the walls and the black Gloeocapsa algae you see streaking down roofs and gutters. On the cedar shake and stucco homes common through Mendham, you can't fix that with a pressure washer — high pressure drives water behind stucco and splits cedar. We soft wash instead: a low-pressure application that kills the organism at the root and rinses clean, safe on painted trim and older wood.
Vinyl-sided colonials on the newer developments get the same soft-wash treatment, just faster. The goal is the same everywhere: clean the growth off without forcing water where it shouldn't go, and knock down the spring pollen film while we're at it.
- Local crew that knows Mendham 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 · 854+ Google reviews“Gallo Bros powerwashing team headed up by Joe, did a great job on our exposed, lakefront home. They went above and beyond to remove dirt and mildew from our house siding, soffits and multiple bluestone patios and walkways, as well as our dock and wood furniture. They also took great care to avoid or work around multiple bird nests which had recently hatched babies pre fledge. I will definitely call them in the future!”
Cathy Marshall
“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
House Washing in Mendham — FAQ
My cedar shake house has green stains on the shaded side — can you clean that without ruining the wood?
Yes. We use a soft wash, not a pressure washer, on cedar. High pressure furs the grain and blows out the finish. A low-pressure application kills the mildew and algae that build up on the north and east faces under your tree cover, then rinses clean without damaging the shakes or the paint.
We have stucco — is pressure washing safe on it?
No, and that's the mistake we see most on Mendham stucco homes. Pressure forces water into cracks and behind the stucco, causing hidden moisture problems. We soft wash stucco with a cleaning solution that does the work chemically at low pressure, so the algae and dirt lift off without driving water into the wall.
When's the best time of year to have my house washed here?
Late spring is the most common, once the pollen film settles and before the peak summer humidity really feeds the mildew. Fall is also good, after leaf drop, to clear the growing season's buildup before winter. We schedule same-week most of the year — just tell us your siding type when you call.
How much does house washing cost in NJ?
Most North Jersey homes run about $300–$550 for a full exterior soft wash, depending on size and stories. Quotes are free and firm.
Will it damage my siding?
No. We soft wash siding, stucco and brick with low pressure and a cleaning solution, so it lifts dirt, mildew and spiderwebs without forcing water behind the panels.
How often should I have my house washed?
Once every 1–2 years for most homes. Shaded, wooded or north-facing walls grow algae faster and may need it yearly.
Do I need to be home?
No. As long as we have access to the exterior and outdoor water, you don't need to be home. We'll confirm everything's spotless before we leave.
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