Business Details
Seattle's Trusted Window & Gutter Cleaning Experts
At MNZ Window Cleaning, we are dedicated to delivering exceptional service with a commitment to quality and customer satisfaction. Our team operates under strict safety standards, adhering to Washington State Department of Labor & Industries and OSHA guidelines. With years of experience in residential and commercial cleaning, we utilize specialized equipment to tackle projects of all sizes, from single-story homes to high-rise buildings. Our 100% satisfaction guarantee ensures every job meets the highest standards, whether we're performing post-construction cleaning or routine maintenance.We pride ourselves on transparency, offering competitive pricing and clear communication throughout every project. Our expertise extends to gutter and roof cleaning, moss removal, and pressure washing, addressing both aesthetic and structural needs. By combining technical skill with a focus on client needs, we help preserve property value while delivering lasting results. Our team's dedication to continuous improvement ensures we remain at the forefront of industry best practices.
Services
Window Cleaning
Gutter Cleaning
Roof Treatment
Pressure Washing
Moss Removal
Commercial Cleaning
Post-Construction Cleaning
Rope Access Services
Heated Pressure Washing
Leaf Clearing
Highlights and features
- We offer a 100% satisfaction guarantee on all services
- Our team is fully licensed, bonded, and insured
- Specialized expertise in high-rise and challenging access window cleaning
- Uses advanced equipment including carbon-fiber Tucker-pole systems
- Provides transparent pricing with detailed service estimates
What people say
Timely
Professional
Quality job
Great price
Excellent work
Services
Window Cleaning
Our window cleaning service restores clarity to residential and commercial glass surfaces using professional-grade equipment. We handle single-story homes to high-rise buildings with carbon-fiber poles and rope access systems. Clients receive detailed post-service verification to ensure complete satisfaction with the results.
Gutter Cleaning
We remove debris from gutters to prevent water damage to foundations and roofing systems. Our technicians document moss presence and provide insurance verification photos when requested. Regular maintenance helps avoid costly structural repairs from improper water runoff.
Moss Removal
Professional moss removal extends roof lifespan by eliminating moisture-retaining growth that damages shingles. We use specialized techniques to safely clear moss from various roof types while following safety protocols for steep or complex roof structures.
Pressure Washing
Our pressure washing service removes stubborn stains from concrete and stone surfaces using heated water technology. This method effectively eliminates grease, oil, and organic growth while preserving surface integrity through controlled pressure application.
Commercial Cleaning
We provide comprehensive cleaning solutions for storefronts, mid-rise offices, and industrial properties. Services include window maintenance with lifts and specialized equipment, concrete cleaning, and seasonal leaf removal to maintain professional property appearances.
People
Mark Stertz
Owner | Lead Tech
Founder with extensive experience in window cleaning, building a skilled team focused on high standards and safety compliance.
Jaime
Support Tech | Admin/Sales
Team member since 2018, managing administrative tasks and client communications with consistent reliability.
Isiah
Support Tech
Joined in 2019, demonstrating steady improvement in technical skills while maintaining strong work ethic.
Luis
Field Tech
Started in 2020, quickly establishing reputation for exceptional work ethic and attention to detail.
Questions
What residential window cleaning options do you offer?
We clean all window types including standard panes, French windows, skylights, and screens with pricing based on accessibility.
Do you provide commercial building maintenance services?
Yes, we service storefronts, offices, warehouses, and industrial properties with specialized equipment for high-rise access.
How often should gutters be cleaned?
We recommend bi-annual cleaning, though frequency depends on property location and surrounding vegetation.
What safety standards do you follow?
We comply with OSHA regulations and Washington State Department of Labor & Industries safety requirements for window cleaning.
Can you handle difficult roof access situations?
Our team uses rope access systems and harnesses for steep or complex roofs while maintaining strict safety protocols.
