Window Cleaning
Crystal clear windows that let the light in — streak-free, hard water stain free, and professionally cleaned from the outside in.
Professional Window Cleaning in Baltimore
Dirty windows do more damage to your home's appearance than almost anything else — they make an otherwise clean home look neglected from the street and block natural light from the inside. But exterior window cleaning is more than just wiping away dust. Over time, windows accumulate hard water mineral deposits from sprinkler systems, oxidation from the frame, pollen, environmental pollution, and biological buildup that standard cleaning can't touch.
Renewal Pressure Washing provides professional exterior window cleaning using soft wash techniques and window-safe solutions that remove years of buildup from glass and frames — without the risk of cracking seals, damaging frames, or leaving streaks behind.
What Builds Up on Your Windows
Hard Water Mineral Deposits
Sprinkler systems that hit your windows leave behind calcium and magnesium mineral deposits that etch into the glass surface over time. These white cloudy stains can't be removed with standard glass cleaner — they require a targeted mineral dissolving treatment before cleaning.
Oxidation from Window Frames
Aluminum window frames oxidize over time and the oxidation washes down onto the glass, leaving grey streaking that makes windows look permanently dirty. We treat frame oxidation separately before cleaning the glass to prevent recontamination during the wash.
Pollen & Environmental Buildup
Baltimore's heavy spring pollen season coats windows in a thick yellow film that standard rainfall can't wash away. Environmental pollution and road dust compound this buildup on street-facing windows throughout the year.
Biological Growth & Bird Droppings
Windows in shaded areas develop algae and mold growth on the glass and frame surfaces. Bird droppings are highly acidic and can etch glass permanently if left untreated — early removal is the only way to prevent permanent damage.
Safe for Glass, Frames & Seals
Windows are one of the most delicate surfaces on your home's exterior. We take extra precautions to ensure our cleaning process never compromises your window seals, frames, or glass.
- ✓Low pressure soft wash only — never high pressure on glass
- ✓Window-safe pH-neutral cleaning solutions that won't damage seals
- ✓Frame oxidation treated separately to prevent glass recontamination
- ✓Screens removed, cleaned separately, and reinstalled
- ✓Window seals and caulking inspected during cleaning
Renewal Pressure Washing — Commercial exterior cleaning in Baltimore, MD
Our Window Cleaning Process
Window & Frame Assessment
We inspect every window for hard water staining, frame oxidation, seal condition, and biological growth before we start — identifying any windows that need specialized pre-treatment.
Screen Removal
All window screens are carefully removed, cleaned separately with a soft brush and window-safe solution, and set aside to dry while we clean the glass and frames.
Pre-Treatment of Problem Areas
Hard water stains, frame oxidation, and heavy biological growth are pre-treated with targeted solutions and allowed to dwell before the main cleaning begins.
Soft Wash Glass & Frame Cleaning
Glass and frames are cleaned using low pressure soft wash and window-safe solutions — removing all buildup without streaking, seal damage, or water intrusion around the frame.
Screen Reinstallation & Final Inspection
Clean dry screens are reinstalled and every window is inspected for streaks, missed spots, and seal integrity before we leave. We walk the property with you to confirm results.
Frequently Asked Questions
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