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Top-Rated Exterior Cleaning Services in South King County
BLK Diamond Exterior Solutions is a family-owned and owner-operated business dedicated to delivering exceptional exterior cleaning services across South King County, WA. With a focus on customer satisfaction, we specialize in roof cleaning, gutter cleaning, pressure washing, window cleaning, and house washing, utilizing state-of-the-art equipment and eco-friendly solutions. Our team prioritizes safety, efficiency, and professionalism, ensuring every project meets the highest standards of quality. As a locally trusted provider, we offer a 100% satisfaction guarantee and same-day quotes, backed by years of industry experience.

Our commitment to transparency, reliability, and personalized service has earned us a reputation as the region's top-rated exterior cleaning company. We serve both residential and commercial clients, providing tailored solutions to enhance property aesthetics and longevity. Our owner-led approach ensures accountability, with direct communication and hands-on involvement in every job. From routine maintenance to emergency services, we strive to exceed expectations while maintaining competitive pricing and military discounts.
Services
Roof Cleaning Gutter Cleaning Pressure Washing Window Cleaning House Washing Power Washing Christmas Light Installation
Highlights and features
  • Family-owned, owner-operated service with direct accountability
  • 100% satisfaction guarantee on all services
  • State-of-the-art equipment for superior results
  • Licensed, insured, and CLIPA-certified professionals
  • Same-day quotes and military discounts available
What people say
Fantastic work Polite, professional Excellent job Spotless results Highly recommend
Services
Roof Cleaning
Our roof cleaning service removes algae, moss, and stains using soft washing techniques that protect roofing materials. Regular maintenance prevents structural damage and extends roof lifespan while enhancing curb appeal. We use eco-friendly solutions and specialized equipment to safely restore your roof's appearance.
Gutter Cleaning
Professional gutter cleaning prevents water damage by removing debris and ensuring proper drainage. Our team clears gutters, flushes downspouts, and applies protective treatments to maintain functionality while preventing foundation erosion and water intrusion issues.
Pressure Washing
High-pressure cleaning removes stubborn stains from concrete, brick, and stone surfaces. Our technicians adjust pressure levels appropriately to avoid damage while eliminating dirt, grease, and organic growth from driveways, sidewalks, and commercial properties.
Window Cleaning
We provide streak-free window cleaning using purified water systems and water-fed poles for hard-to-reach areas. Services include screen cleaning, sills, and tracks to improve visibility and natural light while maintaining commercial and residential window aesthetics.
House Washing
Soft washing removes mold, mildew, and dirt from home exteriors without damaging siding or paint. This process enhances curb appeal, protects building materials, and creates healthier living environments by eliminating allergens and slip hazards from outdoor surfaces.
Questions
What areas do you service?
We serve South King County and surrounding areas including Black Diamond, Tacoma, Federal Way, Puyallup, Auburn, Kent, and all cities listed in our service area.
Do you offer a satisfaction guarantee?
Yes, we provide a 100% satisfaction guarantee on all our services with no payment required until you're completely satisfied with the results.
What cleaning methods do you use?
We use both soft washing and pressure washing techniques depending on surface requirements, along with eco-friendly cleaning solutions and state-of-the-art equipment for optimal results.
Are your technicians trained professionals?
Yes, our team consists of experienced professionals who receive ongoing training in the latest cleaning techniques and safety protocols for both residential and commercial projects.
How often should I schedule roof cleaning?
We recommend roof cleaning every 3-4 years depending on local environmental conditions, though properties with significant tree coverage may require more frequent maintenance.
Can you handle multi-story buildings?
Our team is equipped to safely and effectively clean windows, roofs, and exteriors of both single-story and multi-story commercial and residential properties using specialized equipment.