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over 3000+ reviews! 5 star rated – Most Reviewed In The Pacific North West!
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The Power of clean

Exterior Cleaning Services in Northgate, WA

Trusted Roof, Gutter, Window & Pressure Washing — Backed by 2,000+ 5-Star Reviews

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Professional gutter cleaning service removing debris from residential gutters
Professional roof cleaning service removing moss and debris from residential roof
Professional roof cleaning service in Kitsap County and the Greater Seattle Area
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Johnny Tsunami technician performing professional house washing service in Seattle WA
House washing technician cleaning home siding with soft washing equipment
Technician cleaning residential solar panels with a soft brush

Serving the Pacific Northwest for 15 years

Why Exterior Cleaning Matters in Northgate

Northgate is one of Seattle’s fastest-growing neighborhoods, but with our wet climate and tree-lined streets, homes and businesses still face constant battles against moss, mildew, and grime. Johnny Tsunami brings professional exterior cleaning services to keep your property looking its best year-round.

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(360) 295-4119
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Services

Services We Offer in Northgate

Choose a service below to learn more

Roof Cleaning

Our soft wash system removes moss without damaging shingles, perfect for Northgate’s shaded residential streets.

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Gutter Cleaning

Prevent water overflow during Seattle’s heavy rains with our complete gutter clearing and flushing.

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Window Cleaning

Brighten your home and enjoy clear views of Green Lake and beyond.

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House washing technician cleaning home siding with soft washing equipment

House Washing

Safely remove mold, mildew, and pollution buildup from siding.

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Pressure Washing

Refresh driveways, walkways, and patios for a cleaner, safer exterior.

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Over 15 Years of Experience

Why Northgate Chooses Johnny Tsunami

  • Local crews who understand Seattle’s microclimates
  • Fast service with minimal disruption to your day
  • Eco-friendly products safe for pets and gardens
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Our customers Reviews

Michael Jackson profile pictureMichael Jackson
01:16 20 Oct 26
We have a fairly large property in the middle of the forest - House, attached garage, and a larger detached workshop. Very steep pitched metal roof. We needed the roof and the gutters cleaned, and that's certainly not a job I felt either willing or able to take on.

When I called, someone was here next day to go over the details and discuss the job - and within a couple of days, their tech Jude arrived, and he went well above and beyond. Super professional, very thorough, and left the site impeccably clean - and he worked later to ensure that it was all done in one day, and done well. Very very impressed with his work.

It can be hard to find someone reputable in this field - this is a good company that hires good people. If you are looking for someone you can trust to get the job done and do it well, give them a call.
Matt Hoertkorn profile pictureMatt Hoertkorn
21:18 19 Oct 26
Hired Johnny Tsunami for roof and gutter cleaning and couldn't be happier with the results. Jayce did a thorough job, showed up when he said he would, and the roof looks great. Easy to work with from start to finish. Would definitely hire them again and recommend them to anyone in the area.
Marvin Robles profile pictureMarvin Robles
19:55 16 Oct 26
Whyatt M. did a great job of removing the moss and treating the roof. He washed the siding, gutters, and railings giving them a new life. He was exceptional at communicating and always checked in to make sure everything was up to standard.
Brendenn Kralicek profile pictureBrendenn Kralicek
18:39 16 Oct 26
HORRIBLE- they had to come 4 times to the
Property to do the job properly. They still missed everything they quoted us for the invoice, and still wanted to collect payment. They curated pictures soliciting payment at the end of the job- stating all is clean and “sparkling”
Lies. All lies.

Find a reputable company that delivers in their word.
Oh, they quoted me almost $4K for the job and I paid over $1,600 and they left my property like this.
Marie Longly profile pictureMarie Longly
01:30 16 Oct 26
Amazing experience with Lagne Lolagne. He is so charming, hardworking and kind, he's also really handsome.😊
JEC profile pictureJEC
22:07 15 Oct 26
Wyett worked hard and did a great job cleaning the moss off our roof. He was careful to rinse the soft wash off the plants and decks around the house. He cleaned up all the mess before he left. Although the service was expensive, the results are excellent and I didn't have to get up on the roof. I guess you have to pay for quality work.
Melanie Reeder profile pictureMelanie Reeder
05:10 15 Oct 26
We have had service from Johnny tsunami for a number of years now and have never been disappointed! They do a great job and Are true experts at what they do. Today’s technician, Jude, went well above and beyond any expectations. He explained exactly what happens to your roof with mold, Lichen and moss. He then explained what their techniques are and what their products do. He did a fantastic job!
Gracie S profile pictureGracie S
02:01 15 Oct 26
Excellent work by Jude. Jude seems to really go the extra mile. I recommend Jude. Christmas lights. Yay
Danny Mc profile pictureDanny Mc
19:28 11 Oct 26
The service from Johnny Tsunami is 1st class. My last appointment was with Jayce White. I was informed when the team is on the way to my house. Other issues were pictured and texted to me. The roof cleaning solution works very well. the windows were cleaned to perfection. I cannot see the gutters, but they do not overflow from a hard rain, so, the gutters must be cleaned well also.
Moosey Moose profile pictureMoosey Moose
16:17 08 Oct 26
10/10 recommend this company. They train their employees extremely well, their technicians are professional and knowledgeable, and they really make sure that you're satisfied with their service. Their sales team is also super friendly.
Mike Beers profile pictureMike Beers
15:59 07 Oct 26
Finally killed the moss on my roof. Seeing results immediately.
Kurt Fosso profile pictureKurt Fosso
11:36 07 Oct 26
Wyatt was courteous and efficient, and left the windows perfectly clean. Excellent work!
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Areas We Serve Near Northgate

We serve the entire Northgate area, including:

Johnny Tsunami exterior cleaning service area map
Johnny Tsunami exterior cleaning technician holding professional pressure washing equipment

Frequently Ask Question

Roof cleaning in Northgate typically ranges from $400 to $900 depending on the roof size, moss buildup, pitch, and accessibility. We offer free quotes and honest pricing — no hidden fees.

Yes — we work with property managers for apartments, condos, and HOAs.

Yes. Our Tsunami Soft Wash System uses eco-friendly detergents and low pressure to safely clean siding, trim, and even windows without damage to paint, wood, or landscaping.

Twice a year is ideal, especially in spring and fall.

We do. Many Northgate homeowners choose bundled services — like roof + gutter cleaning or house wash + windows — to save time and money. Ask about our maintenance plans for recurring discounts.

In a wet and moss-prone climate like Northgate, we recommend gutter cleaning at least 1–2 times per year and roof moss treatment every 1–3 years, depending on tree coverage and roof type.

Yes — Johnny Tsunami is fully licensed, bonded, and insured in Washington. Every technician is trained, background checked, and covered so you can feel confident and protected.

From Our Blog

Quick reads to help you protect, maintain, and get the most out of your property.
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Ready to Schedule Exterior Cleaning in Northgate

Moss, grime, and clogged gutters don’t stand a chance — book your Northgate exterior cleaning today.

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(360) 295-4119