Windows, gutters, pressure washing, roofs.
We Are A Top Down And Underground Cleaning Company
No Lines Left Behind
Our Work Speaks For Itself
Window Cleaning
- Interior and exterior glass cleaning with squeegee
- Frames, sills, and tracks wiped clean
Gutter Cleaning & Brightening
- Hand-scoop debris removal with extension poles
- Downspout clearing with snakes or elbow disassembly
Pressure Washing
- Rotating surface cleaner for driveways, walkways, and patios
- Soft wash for siding, painted surfaces, and wood decks
Moss Removal & Treatment
- Hand-brushing to remove moss clumps
- Backpack blower to clear debris and loose moss
House Washing
- Full soft wash of siding, trim, eaves, and fascia
- Biodegradable cleaner application with controlled dwell time
Roof Cleaning & Treatment
- Backpack blower debris removal — leaves, fir needles, branches
- Soft wash moss and algae treatment with biodegradable cleaner
Commercial Exterior Cleaning
- Window cleaning for storefronts and office buildings
- Pressure washing for walkways, parking lots, and building exteriors
Recurring Maintenance Packages
- Priority scheduling with locked calendar dates
- Discount pricing compared to one-off service rates
Soft Washing
- Low-pressure solution applied to siding, trim, soffits, and fascia
- Algae, mildew, and moss killed at the root — not just rinsed off
Drain Line Jetting
- Camera inspection to locate the blockage where access allows
- High-pressure jetting of downspout and underground drain lines
Exterior Wood Restoration
- Gentle clean to strip dirt, algae, and mildew without damaging the grain
- Wood brightener applied to neutralize gray and restore natural tone
Hear it straight from our customers.
From first call to job done — 4 steps.
Request A Quote
Call (206) 890-6902, email, or use the online form to describe what you need — window cleaning, gutter cleaning, pressure washing, or a combination.
We Provide The Quote
We'll give you a date and a time window — usually a 30 to 60 arrival window depending on the route that day.
Complete The Work With Before & After Photos / Videos
Pearl Exterior Cleaning arrives with all the equipment — ladders, pressure washers, cleaning solutions, drop cloths.
Walk The Property And Then Invoice
If you're home, we'll walk you through what we did and answer any questions.
From Canada To California's Border And The Pacific Coast To Idaho's Potato Fields!
Pearl Exterior Cleaning serves residential and commercial properties across Greater King County and the surrounding area. We handle window cleaning, gutter cleaning, pressure washing, roof moss treatment, house washing, solar panel…
Serving Greater King County And Surrounding Areas
Common questions, honest answers.
How often should I get my gutters cleaned?
Most homeowners across King County schedule gutter cleaning twice a year: once in late fall after the leaves drop, and once in spring after the maple seeds and fir needles accumulate. If you've got heavy tree cover — especially firs, cedars, or maples — you might need it three times a year. Clogged gutters overflow and send water into your foundation or under your roofline, which leads to expensive repairs.
Do you pressure wash roofs?
No. High-pressure washing strips the protective granules off composition shingles and shortens the roof's life. We use soft wash for algae stains and hand-brush moss off before treating it with zinc sulfate powder. The goal is to remove the growth and kill what's left without damaging the roof itself.
Can you clean windows while I'm not home?
Yes. Most of our customers aren't home during service. Just leave access instructions — unlocked gates, garage codes, where the hose bib is — and we'll complete the work and leave an invoice. If you want before-and-after photos sent to your email, let us know when you book.
How long does roof moss treatment last?
Zinc sulfate treatment typically lasts 1-2 years depending on how much shade your roof gets and how much moisture it holds. North-facing slopes and roofs under heavy tree cover need retreatment more often. You'll see the moss die off over a few weeks after application, and regrowth slows significantly.
Do gutter guards eliminate the need for gutter cleaning?
No. Gutter guards reduce how often you need cleaning, but they don't eliminate it. Fine debris — fir needles, seed pods, roof grit — still gets through and clogs the downspouts. Pearl Exterior Cleaning cleans gutter guard systems regularly. Most guards work best when paired with annual or bi-annual maintenance.
What's the difference between pressure washing and soft washing?
Pressure washing uses high PSI to blast dirt off hard surfaces like concrete and driveways. Soft washing uses lower pressure with biodegradable cleaners to lift algae, mildew, and dirt from siding, painted surfaces, and roofs. Soft washing is safer for anything that can be damaged by high pressure — wood, paint, shingles.