Icon of a window being cleaned with a squeegee.

Expert Window Cleaning, Pressure Washing, and Cleaning Services

We Offer Free Estimates

As a homeowner, you know the difference a clean, well-maintained exterior can make. Over time, dirt, grime, moss, and mildew can build up on roofs, siding, windows, and walkways, leaving your home looking worn and neglected. You want your house to shine, not just for curb appeal but to protect your investment, inside and out. That’s where professional exterior cleaning comes in, restoring your home’s beauty and helping it stand out in the neighborhood.


At Diamond PT Window Cleaning, we believe every property deserves to shine. Based in Monroe, WA, we specialize in pressure washing, window cleaning, roof and gutter maintenance, solar panel cleaning, and moss removal throughout Duvall, Snohomish, Lake Stevens, Woodinville, Redmond, Bothell, and surrounding areas. From residential homes to commercial buildings, our mission is to deliver spotless results that protect your investment and elevate your property’s curb appeal.


With years of hands-on experience and full licensing and insurance, our team combines expert craftsmanship with eco-friendly cleaning techniques. Whether you need a complete exterior wash or specialized care for your windows and solar panels, we make it easy to restore and maintain your property safely and efficiently.

A window view. Outside, a vehicle, and chairs; inside, wooden ceiling and exposed wall, with reflection.

Residential Pressure Washing and Exterior Cleaning

A clean exterior not only looks great, but it also extends the life of your home. Our residential exterior cleaning services are designed to remove dirt, mildew, algae, and buildup that can damage siding, walkways, and roofs over time. Using gentle soft-wash methods and biodegradable cleaning solutions, we safely clean every surface without risk to your home’s structure or landscaping. Our comprehensive exterior care includes:

Black silhouette of a house roof.

Roof Washing

Black outlined drawing of flames emerging from a small mound.

Moss Removal

Black lines resembling pipes or tubes, curved and connected at the top.

Gutter Cleaning & Debris Removal

High-pressure washer icon. A water hose directs water onto something, and a machine behind the hose.

Pressure Washing for Driveways, Patios & Walkways

Solar panel icon.

Solar Panel Cleaning

Window being cleaned with a squeegee.

Crystal-Clear Window Cleaning

Each project is handled with care and precision, ensuring every corner of your property is treated with the same attention to detail we’d give our own homes.

Commercial Window Cleaning and Solar Panel Maintenance

Your building’s exterior says a lot about your business. Our commercial exterior cleaning services help your company make the right first impression—bright, professional, and polished. From storefronts to office buildings, we deliver streak-free window cleaning that enhances visibility, brand presentation, and customer experience. Clean windows invite light in, creating a more welcoming space for employees and visitors alike.


We also provide solar panel cleaning to improve energy efficiency. Dust, pollen, and debris can block sunlight and reduce performance—our gentle cleaning methods restore clarity and output without damaging your system. Our commercial services are ideal for:

  • Business parks & retail centers
  • Offices & professional buildings
  • Restaurants & hospitality venues
  • Apartment complexes & managed properties

When you choose Diamond PT Window Cleaning, you’re partnering with a reliable team that values punctuality, consistency, and your professional image.

Complete Exterior Cleaning Maintenance – Save With Bundling

Because exterior maintenance is interconnected, Diamond PT Window Cleaning offers bundled cleaning solutions for your entire property. This ensures your property looks refreshed as a whole, and you save! Our safe and effective cleaning process treats every surface individually:

  • Soft washing for delicate materials like siding, roofs, and painted trim
  • High-pressure cleaning for concrete, brick, and durable surfaces
  • Targeted moss and mildew treatment for long-term prevention


This thoughtful approach not only improves appearance but also protects your investment—helping you avoid premature wear, surface staining, or moisture damage.

Two side-by-side images show a deck before and after cleaning, revealing brighter wood.
Garage exterior with reflected sunset, gray door, light, and forest backdrop.

Why Choose Us as Your Exterior Cleaners?

Homeowners and business owners across the west side of Washington trust Diamond PT Window Cleaning for quality, safety, and reliability. We don’t just clean—we care for your property as if it were our own. What sets us apart:

  • Licensed, insured, and highly trained technicians
  • Eco-friendly cleaning products and safe washing techniques
  • Reliable scheduling and consistent communication
  • Detailed, no-surprise quotes
  • Proven track record of customer satisfaction


Every project is an opportunity to earn your trust through meticulous work and lasting results. From bright windows to spotless siding, we deliver excellence that shows.

Enhance Your Curb Appeal Today

Your home or business deserves to look its best year-round. Whether you’re preparing for a sale, maintaining a property portfolio, or simply want to enjoy a cleaner, healthier environment, Diamond PT Window Cleaning is here to help. We proudly serve Monroe, WA, and neighboring communities throughout the west side of the state—bringing professional, dependable exterior cleaning right to your door.

I cannot recommend Ben enough! He’s been cleaning our business and home windows and always does a great job inside and out! He’s got a down to earth, kind nature and very fair pricing!


★★★★★

Denera C.

Ben did an amazing job helping us cleaning windows and gutters. Very professinal work, great communication, everything was on time and reasonable prices. I am one happy customer!


★★★★★

Katya N.

I had my gutters cleaned and moss control applied. Benjamin did an excellent job. He was very professional and polite, and did a great job cleaning up before he left. I highly recommend him and will use his services again.


★★★★★

Dan D.

Ben did an amazing job cleaning our windows inside and out. He also took great care of our gutters. Will definitely come back for more services.


★★★★★

Artur A.

Ben did a great job pressure washing and cleaning our windows. Highly recommend Diamond PT Window Cleaning!


★★★★★

L Owens

Contact us for a free quote and see how our expert cleaning services can renew your property from top to bottom. Let’s make your exterior shine.