Exterior Cleaning
Professional Exterior Window Cleaning — Streak-Free Results Using Pure Water Systems
Hard water stains, mineral deposits, oxidation, and years of grime don’t stand a chance against NorTech’s professional exterior window cleaning service. We use pure water systems and professional-grade techniques to deliver crystal-clear, streak-free windows on every home and property we service.
New to NorTech? Save 15% off your first exterior window cleaning service — any home size, any number of windows.
How It Works
Why Pure Water Window Cleaning Outperforms Everything Else
Standard tap water contains dissolved minerals — calcium, magnesium, silica — that leave white spots and streaks when water evaporates off glass. This is the reason DIY window cleaning rarely looks truly clean: the water itself is the problem.
NorTech’s pure water window cleaning system filters tap water through deionization cartridges until it reaches 0 TDS — zero total dissolved solids. Water this pure has nothing left to deposit on the glass when it dries, which means no streaks, no spots, and no residue. Ever.
The water is applied through a soft-bristle brush on an extendable pole, agitating the glass surface to break down grime, then rinsed with a final pure water flood that carries everything off cleanly. No squeegees, no chemicals, no ladder risk on multi-story windows.
0 TDS
Dissolved solids in our rinse water — the reason there are zero streaks2–4×
How often most homes benefit from professional window cleaning per year3 Stories
Maximum reach of our water-fed pole systems — no ladders requiredWhat We Remove
Types of Window Staining & Buildup We Treat
Not all window contamination is the same. NorTech technicians identify what’s on your glass and apply the right approach for each type — from routine grime to severe mineral etching.
Hard Water & Mineral Deposits
White cloudy spots left by sprinkler overspray, rain runoff, and tap water. Mild deposits respond to pure water cleaning. Severe etching requires a mineral treatment pre-step before standard cleaning.
Oxidation & Surface Haze
UV exposure and environmental pollutants create a dull oxidized haze on glass over time. Professional cleaning restores clarity and transparency that household cleaners can’t match.
Construction Dust & Overspray
Paint overspray, mortar splatter, concrete dust, and drywall residue bond to glass during construction or renovation. Specialty solvents and controlled techniques remove these without scratching.
Algae & Mildew Film
Green or black biological film on glass — common on north-facing and shaded windows in humid climates. Soft wash solution kills the organism; pure water rinse removes all residue.
Bird Droppings & Bug Splatter
Acidic bird droppings etch into glass fast — the longer they sit, the deeper the damage. Prompt professional cleaning removes them before permanent etching sets in.
General Grime & Atmospheric Soiling
Dust, pollen, vehicle exhaust, and airborne particulates accumulate on glass surfaces continuously. Regular professional cleaning prevents buildup from compounding into harder-to-remove contamination.
Window Types We Clean
Exterior Window Cleaning for Every Window Style
Every window type has different cleaning access requirements. NorTech technicians are equipped for all configurations — standard frames to specialty glass.
Single & Double-Hung Windows
Standard residential windows cleaned top to bottom with full frame and sill treatment included.
Casement & Awning Windows
Side-hinged and top-hinged windows cleaned on all exposed exterior panes and frame edges.
Sliding Glass Doors
Full-height glass panel cleaning including tracks, frames, and both exterior door surfaces.
Picture & Fixed Windows
Large stationary glass panels — living rooms, entryways — cleaned with water-fed pole systems at any height.
Skylights & Roof Windows
Flat and angled skylights on accessible roof sections cleaned with pure water and extended pole systems.
Specialty & Architectural Glass
Stained glass surrounds, transom windows, angled clerestory glass — cleaned using appropriate solutions and technique for each glass type.
Pricing Transparency
Exterior Window Cleaning Cost Factors
Window cleaning costs depend on how many windows you have, how high they are, and what condition the glass is in. Click any factor to learn more.
All window cleaning pricing is quoted to your property. Request a free quote — no obligation. Request a free quote — no obligation.
Customer Reviews
What Customers Say About Our Exterior Window Cleaning Service
4.8
Based on 1000+ ratings
“I’d tried every window cleaner on the market and could never get the hard water spots off the back windows near the pool. NorTech came out, treated the glass first, then cleaned it. Completely clear for the first time in years.”
— Diane P.“The technician used a pole system to clean the second-story windows without a single ladder. I was watching from inside and the glass came out cleaner than I’ve ever seen it. No streaks, no marks, nothing. Booked the quarterly plan on the spot.”
— Arnold K.“Windows look great. My issue is I specifically asked about the skylights and was told they could do them, but on the day the technician said the pitch was too steep. A heads-up before the appointment would have saved us both time. Results on the standard windows were excellent though.”
— Fiona M.“We had construction overspray on every window from a renovation next door — paint specks, concrete dust, the works. I thought the glass was ruined. NorTech got every bit of it off without scratching a single pane. Genuinely impressive.”
— James & Sue V.“Really clean result on all the main windows. There’s one narrow side window they had difficulty accessing because of a bush and it wasn’t as clean as the rest. Small issue on an otherwise great job — I’d still book again.”
— Tanya R.“I never realized how much cloudy glass was affecting the light in our living room until after they cleaned. The room looks completely different — brighter, more open. Hard to believe it was just dirty windows.”
— Michelle O.Got Questions?
Exterior Window Cleaning — Frequently Asked Questions
Service Coverage
Exterior Window Cleaning Services Near You
NorTech provides professional exterior window cleaning across the United States. We serve hundreds of cities including:
Get Started Today
See Your Home in a Completely Different Light
Get a free, no-obligation quote for professional exterior window cleaning. NorTech’s certified technicians deliver streak-free results using pure water systems on every home we service.
