Commercial Window Cleaning
Delta Janitorial Systems has been cleaning windows across Dallas-Fort Worth since 1972, when the company was founded as Royal Services. We provide interior and exterior window cleaning for commercial facilities using professional squeegee techniques and water-fed pole systems that deliver streak-free results safely. Regular window cleaning protects glass surfaces and improves natural light throughout your building.
Clean windows change how a building feels from the inside out.
Natural light, clear sightlines, and a polished exterior. Clean windows affect everything from employee morale to the impression your building makes on visitors. Dirty windows, on the other hand, signal neglect before anyone walks through the door.
Window cleaning is where Delta started over 50 years ago as Royal Services. It's still a core part of what we do, and we bring the same precision and accountability to it as every other service we manage.
- Interior and exterior window cleaning for all building types
- Scheduled programs (monthly, quarterly, or seasonal) based on your needs
- High-reach and multi-story capability with professional equipment
- Frame and sill cleaning included, not just the glass
- Weather-flexible scheduling to ensure quality results
- Fully insured crews with proper safety training and equipment
Standalone service or integrated into your managed program.
What does commercial window cleaning include?
Professional window cleaning goes well beyond wiping down glass with a rag. A thorough commercial program covers every component of the window system, including frames, sills, tracks, and both interior and exterior glass surfaces. Each element collects dust, grime, and moisture over time, and neglecting any one of them leads to staining, corrosion, or a building that simply looks poorly maintained. The goal is a complete result that holds up between service visits, not just a quick pass that looks good for a day.
Interior Window Cleaning
Interior glass collects fingerprints, dust film, and residue from HVAC systems. Our staff clean each pane using professional squeegee techniques that leave zero streaks or lint behind. We also address glass partitions, sidelights, and interior transoms that affect how light moves through your space.
Exterior Window Cleaning
Exterior surfaces take the worst of it. Pollen, hard water mineral deposits, bird droppings, and oxidation from pollution all build up on commercial glass. Our teams use purified water-fed pole systems and traditional squeegee methods depending on the building, removing buildup without damaging coatings or tinting.
Frame & Sill Cleaning
Dirty frames and sills undercut even the cleanest glass. We wipe down aluminum, vinyl, and wood frames, clear debris from window tracks, and remove the dark buildup that collects along sill edges. This step prevents moisture trapping and extends the life of your window hardware.
High-Rise & Multi-Story
Buildings above ground level require specialized access and safety planning. We manage multi-story window cleaning using water-fed pole systems that reach upper floors from the ground, eliminating the need for ladders on many buildings. Our crews carry proper safety training and equipment for every scenario.
Storefront & Entrance Glass
Entrance glass is the first thing visitors see and the last thing they notice on the way out. Storefronts, lobby windows, and vestibule glass need more frequent attention because of constant foot traffic and direct exposure to the elements. We manage storefront programs on weekly or biweekly cycles to keep first impressions sharp.
Scheduled Maintenance Programs
One-time cleanings solve a short-term problem. A scheduled program solves the long-term one. We set up monthly, quarterly, or seasonal service calendars based on your building type, glass exposure, and appearance standards. Weather-flexible scheduling means we adjust around rain or high winds rather than deliver a subpar result.
Delta was founded in 1972 as Royal Services, a window cleaning company serving commercial buildings across Dallas-Fort Worth. More than 50 years later, window cleaning remains one of our core services. The techniques and equipment have evolved, but the standard has not. Every pane, every frame, every visit is managed with the same accountability we bring to every service in your facility.
Why facilities trust Delta with their windows
Window cleaning is where Delta started in 1972. Over 50 years later, it's still a core part of what we do.
50+ Years of Window Expertise
Delta was founded as Royal Services, a window cleaning company. This isn't a side offering. It's part of our DNA.
Safety-First Approach
Fully insured crews with proper safety training, water-fed pole systems for high-reach work, and professional equipment for every building type.
Flexible Scheduling
Monthly, quarterly, or seasonal programs. We work around your schedule and weather conditions to deliver streak-free results.
Our guarantees
Pay Only If Satisfied
If work isn't to spec, you don't pay for that portion.
30-Day Evaluation
Structured benchmarks and check-ins from day one.
12-Month Price Lock
No surprise increases for a full year.
Month-to-Month Terms
No long-term contracts. We earn it every month.
Let the light back in.
Schedule a free walkthrough. We'll assess your windows and set up a program that keeps them spotless.