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Seattle Pressure Washing Services:
What to Expect (And Why It’s Worth It)

Seattle is no stranger to buildup — moss, algae, grime, pollen and tree gunk. And when it starts taking over your sidewalks, siding, curbs, or parking lot, you’ve got two choices: ignore it and hope it goes away (it won’t), or pressure wash it and watch your property shine again.

 

If you’ve never hired a professional for pressure washing services before, or you’re wondering if it’s actually worth it, we’ve got answers. Here’s what to expect — and why thousands of Seattle-area property owners trust us to clean things up right.

What Does Pressure Washing Actually Remove?

Short answer: A lot.
Long answer: More than you think — and probably more than you can scrub off by hand.

Professional pressure washing safely and effectively removes:

  • Moss and algae: These thrive in damp Seattle weather and can quickly take over walkways, patios, and driveways. Beyond looking bad, they’re also slippery — turning your sidewalk into a potential liability. Over time, moss and algae can break down concrete and other surfaces, leading to cracking and erosion.
  • Layers of grime, grease, and built-up debris: From urban dust to auto drips in your driveway, it all accumulates slowly until you realize your “gray” concrete was actually supposed to be white.
  • Mold and Mildew: Often found on shaded siding, fences, or under decks — they’re not just unsightly, they can damage your surfaces and affect air quality nearby. Pressure washing eliminates these spores before they spread deeper.
  • Stains from dirt, rust, pollen, and foot traffic: Whether it's a high-use patio, front steps, or commercial storefront entrance, these areas take a beating — and it shows. Pressure washing lifts stains and brightens surfaces instantly.
  • Construction dust and debris: Just finished a renovation or build-out? Pressure washing is essential for removing leftover materials, paint flecks, caulk residue, and drywall dust — especially before sealing or painting.

Whether you’re dealing with a slippery sidewalk, a grease-stained parking pad, or a mildew-covered patio, pressure washing doesn’t just make it look better — it extends the lifespan of your property. Clean surfaces last longer, function better, and require less maintenance over time.
It’s not just about aesthetics — it’s preventative care for your home or building’s exterior.

What Surfaces Can Be Pressure Washed?

If it’s dirty and outside, we can probably clean it.

 

At GHB Window Cleaning, we provide residential and commercial pressure washing for a wide variety of surfaces, including:

  • Sidewalks and driveways
  • Patios and pool decks
  • Curbs and concrete paths
  • Building exteriors (including multi-story/high-rise)
  • Parking garages and loading areas
  • Awning cleaning and protection
  • Final cleans for new construction
  • Exterior caulking and waterproofing projects
And yes, we use both hot and cold pressure washing with up to 4000 PSI, depending on the job. It’s powerful, but precise.

Why Pressure Washing Is Worth It for Businesses

Commercial properties tend to get dirty fast. There’s more traffic, more exposure, and more wear-and-tear. Regular pressure washing doesn’t just improve the look of your building — it can also reduce liability risks.

 

Think about it: mossy sidewalks, algae-covered parking lots, slippery stains from spilled drinks — these can all create hazards for your customers or tenants. A clean surface is a safer surface, and we take that seriously.

Not All Pressure Washing Companies Are Equal

At GHB Window Cleaning, we’ve been serving Seattle-area homeowners and businesses for over 25 years — and we do pressure washing the right way.
  • Fully licensed, bonded, and insured
  • Eco-friendly and compliant with all federal, state, and local waste-water guidelines
  • Friendly, background-checked professionals
  • Reliable arrival times, clean uniforms, and respectful crews
  • Equipment powerful enough to clean large commercial buildings — and gentle enough for residential use
We also offer references from other commercial pressure cleaning clients upon request — your privacy is protected, but your trust matters.

How Much Does Pressure Washing Cost?

Every project is a little different. Costs depend on: square footage, height/accessibility of the area, degree of soiling or buildup, etc.   The good news? You don’t have to guess. You can get a free custom quote by calling us at (425) 250-1044 or use our online form for a free estimate. No pressure (pun intended), just straightforward service.

Let’s Wash Away the Grime — For Good

Pressure washing is one of the fastest, most satisfying ways to boost your property’s appearance, extend the life of your exterior surfaces, and reduce safety hazards.
Whether you’re managing a commercial building in downtown Seattle or refreshing your driveway in Renton, GHB Window Cleaning & Maintenance is here to help you get it done — clean, safe, and hassle-free.

 

Ready for a free pressure washing estimate? Get in touch today.

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Clearly the Right Choice! Suddenly the idea of Clean Windows, Clean Gutters & Clean Roofs all year round became a whole lot clearer! GHB Window Cleaning knows that first impressions are lasting and when your building has clean windows, people notice.

With over 25 years of experience, you can rely on our fast, professional on time service!

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