Business Details
Your Trusted Window & Gutter Cleaning Experts in Seattle
MNZ Window Cleaning has been dedicated to delivering exceptional service at reasonable prices while restoring residential and commercial properties to a 'like new' condition. Our team prioritizes safety, adheres to Washington State Department of Labor & Industries Safety Standards, and follows all OSHA guidelines. We serve the Puget Sound region, offering window cleaning, gutter maintenance, pressure washing, and moss removal for homes, schools, shopping centers, and offices.Our commitment to 100% client satisfaction ensures every job, regardless of size, receives meticulous attention to detail. With specialized equipment for challenging tasks like high-rise window cleaning and heated pressure washing, we address diverse needs while maintaining transparency and ethical standards.
Services
Window Cleaning
Gutter Cleaning
Pressure Washing
Moss Removal
Roof Treatment
Highlights and features
- We guarantee 100% satisfaction with every job.
- Our team is fully licensed, bonded, and insured.
- We serve both residential and commercial properties.
- We follow OSHA and state safety standards rigorously.
- We use specialized equipment for challenging tasks.
What people say
Timely
Professional
Quality job
Great price
Full attention
Services
Window Cleaning
Our window cleaning service removes dirt, grime, and buildup from residential and commercial properties using eco-friendly solutions. We handle single-story homes to high-rise buildings with carbon-fiber poles and lifts. Clients receive a final inspection to ensure clarity and satisfaction, with pricing based on height and complexity.
Gutter Cleaning
Gutter cleaning prevents water damage by removing leaves, moss, and debris from residential and commercial properties. Our team uses specialized tools to clear gutters efficiently, ensuring proper drainage and protecting foundations. Regular maintenance extends roof lifespan and avoids costly repairs from overflow damage.
Pressure Washing
Pressure washing revitalizes concrete, stone, and driveways by removing algae, lichen, and oil stains. We use heated systems for grease removal and offer seasonal leaf clearing. This service enhances curb appeal while preventing slip hazards on pathways and parking areas.
Moss Removal
Moss removal eliminates moisture-retaining growth that damages roofs and voids insurance coverage. Our technicians safely clear moss, treat surfaces to prevent regrowth, and provide documentation for insurance claims. Regular treatment extends roof longevity and maintains structural integrity.
Roof Treatment
Roof treatment prevents moss and algae buildup while preserving materials like asphalt, wood, and metal. We apply protective solutions after cleaning to prolong roof life. This service is critical in rainy climates where moisture accelerates deterioration and increases replacement costs.
People
Mark Stertz
Owner | Lead Tech
Mark Stertz founded MNZ Window Cleaning and built a team focused on high standards. He oversees operations and ensures safety compliance for complex projects.
Jaime
Support Tech | Admin/Sales
Jaime joined in 2018, managing administrative tasks and client communications while maintaining a steady hand in customer service.
Isiah
Support Tech
Isiah started in 2019 as a dedicated student and worker, improving his skills daily while supporting field operations efficiently.
Luis
Field Tech
Luis joined in 2020, demonstrating strong work ethic and attention to detail in every cleaning and maintenance task.
Questions
What services does MNZ Window Cleaning offer?
We provide window cleaning, gutter maintenance, pressure washing, moss removal, and roof treatment for residential and commercial properties.
How are window cleaning prices determined?
Pricing depends on window height (1st–3rd+ story), type (average, French, skylights), and total pane count for residential jobs.
Do you follow safety regulations?
Yes, we adhere to OSHA standards and Washington State safety protocols, with licensed, bonded, and insured operations.
What areas do you serve?
We operate throughout the Seattle Metro area, Puget Sound, and surrounding cities for both residential and commercial clients.
Is there a satisfaction guarantee?
We guarantee 100% satisfaction, ensuring clients approve completed work before finalizing any job.
