Knowing how to clean outside windows properly makes the difference between glass that looks clean and glass that actually is. The method changes depending on how high the windows are, whether you have outdoor access, and what tools you’re working with — but the core principles stay the same.
Add to Preferred SourcesBefore you start, pick the right day. Direct sunlight is the enemy of streak-free glass: the cleaning solution dries on the pane before you can squeegee it off, leaving marks that are harder to shift than the original grime. A cool, overcast day gives you enough time to work each window properly.
Clear the area first. Remove any screens and clean them separately. Move anything that might block access to the frames — bars, shutters, flower pots, garden furniture. If any windows can be removed entirely from their fittings, wash them at ground level. It’s quicker, safer, and you’ll do a better job. Decide in advance which windows need a ladder, which can be reached with an extension pole, and whether any will need cleaning from inside.
TL;DR
- On a cloudy, dry day, use a telescopic pole with a strip washer and squeegee to clean outside windows up to the second floor without a ladder.
- The cleaning solution is simple: warm water with white vinegar and washing-up liquid. Vinegar cuts mineral deposits; washing-up liquid lifts grime.
- Avoid direct sunlight when cleaning — the solution dries too fast and leaves streaks before you can squeegee it off.
- For upper-floor flats with sealed or restricted windows, a U-shaped telescopic pole, magnetic cleaner, or robot window cleaner lets you reach the outside pane from inside.
- If the windows are above the second floor or genuinely inaccessible, a professional window cleaner with water-fed poles or rope access is the safest option.
Table of Contents
How to clean outside windows?
For ground and first-floor windows, a ladder is an option if you’re confident using one. Fit it with anti-slip pads to protect both the surface and yourself.
A better and safer approach for most people is a telescopic pole with a strip washer and squeegee. Non-professional telescopic poles typically reach 16–17 ft, which is enough to cover second-floor windows from the ground. No ladder required, and significantly less risk of a fall or surface damage.
Whatever method you use, the cleaning solution is the same: warm water with a measure of white vinegar and a small amount of washing-up liquid. The vinegar dissolves mineral deposits and hard water marks; the washing-up liquid cuts through general grime and road film. Warm water helps the solution spread evenly across the glass. You’ll find the full mixing instructions in the step-by-step section below.
What You’ll Need to Clean Outside Windows
- Broom with a long handle. For sweeping away cobwebs and debris from high window surrounds before you apply any solution.
- Vacuum cleaner. For clearing debris at ground level around the window base and sill.
- Telescopic window cleaning kit. This should include the telescopic pole itself, a strip washer (also called a window mop), and a squeegee with a rubber blade.
- Bucket. Large enough to submerge the strip washer head fully.
- Warm water. The base of your cleaning solution.
- White vinegar. Cuts through mineral deposits and hard water residue on the glass.
- Washing-up liquid. A small amount lifts general surface grime and helps the solution cling to the glass.
- Microfiber cloths. For wiping the squeegee blade between passes and drying the window frames.
What to Clean Outside Windows With
The most reliable homemade solution is warm water with white vinegar and a small amount of washing-up liquid. White vinegar is a mild acid, which is exactly what you need to break down the mineral deposits and hard water marks that cloud outdoor glass. Washing-up liquid tackles organic grime — dirt, pollen, bird mess — and helps the solution spread across the pane without beading. Warm water activates both ingredients and makes the mix easier to work with on a cold morning.
If you’d rather use a commercial product, a diluted glass cleaner works just as well for the washing stage. Whatever you use, apply it with the strip washer and remove it with the squeegee — the technique matters as much as the solution. A good solution applied badly still leaves streaks.
How to clean upstairs windows without a ladder?
How to clean upstairs outside windows using a telescopic pole and squeegee, without a ladder.
Clear cobwebs and debris
Use a vacuum cleaner to clear debris at ground level around the base of the window. For higher windows, use a broom with a long handle to sweep away any cobwebs, loose dirt, or nesting material from the frame and surrounding wall before you apply any solution. Washing over cobwebs just pushes them into the glass.
Mix your cleaning solution
Fill a bucket with warm water and add white vinegar and washing-up liquid. Soak the strip washer in the bucket for 1–2 minutes before attaching it to the pole. Note: the exact quantities in the original recipe (500 ml vinegar to 250 ml washing-up liquid) are awaiting verification — standard guidance is a roughly 1:10 ratio of vinegar to water with a few drops of washing-up liquid. Use your judgement based on how soiled the windows are.
Apply solution with the strip washer
Attach the soaked strip washer to the telescopic pole and apply the cleaning solution across the full window surface. Scrub the entire pane, working into corners and edges to break up all the dirt. For the washing stage, working upward from the bottom corner is fine — you’re loading the surface with solution, not removing it yet.
Squeegee from top to bottom
Replace the strip washer with the squeegee. Place the rubber blade in the top corner of the window and draw it downward in overlapping strokes with even pressure. Wipe the blade with a microfiber cloth between each pass — a dirty blade leaves streaks. Continue until you’ve removed all visible water and suds.
Wipe the frames dry
Attach a dry strip washer or use a microfiber cloth on the pole to remove excess water from the window frames and sill. Dirty water sitting on frames will run back down onto the glass and undo your work.
Leave to air-dry
Let the windows air-dry naturally. This works best on a dry, overcast day — the same conditions recommended for cleaning. If you notice any missed spots the following morning, a quick pass with the strip washer and squeegee is all it takes.
How to Clean Outside Windows from Inside (Flats and Apartments)
Living in a flat or high-rise building means outdoor access to your windows usually isn’t an option. That doesn’t mean you’re stuck with dirty glass — it means using the right tools for the constraint.
The simplest option is a U-shaped telescopic window cleaning pole. These are designed for exactly this situation: you work through a slightly open window and reach around to the outside pane without leaning out. They’re particularly well suited to tilt-and-turn windows, which open inward enough to give you a useful working angle. Reach is limited by how wide the window opens, so they’re less effective on windows with a restricted opening.
Robot window cleaners are a more hands-off solution. You attach the device to the outside face of the glass (via suction), set it running, and it traverses the pane automatically. They require a power source, work best on smooth flat glass, and may struggle with frames or edges — but for the main pane of a large, sealed window, they do a reasonable job. Quality varies considerably with price.
Magnetic window cleaners are the most affordable option in this category. One pad sits on the inside of the glass, one on the outside, held together by magnets. You move the inner pad across the pane and the outer one follows. They work reliably on single-glazed glass. On double-glazed units, the effectiveness depends on the glass thickness — thicker sealed units need a stronger magnet to maintain contact, and some cheaper models lose grip. You’ll often need multiple passes to get full coverage, and edges remain difficult.
Note that all three methods address the glass pane only. The outside of the window frames will still need attention, which may require a separate telescopic pole if you can reach them through the open window.
Methods at a Glance
| Best For | Approximate Cost | Limitations | |
|---|---|---|---|
| Telescopic pole (from outside) | Ground to second floor, houses with outdoor access | £20–£50 for a full kit | Requires outdoor access and a dry day |
| U-shaped telescopic pole | Upper-floor flats with tilt-open or inward-opening windows | £15–£40 | Reach limited by how far the window opens |
| Magnetic or robot window cleaner | Sealed upper-floor windows where no outdoor access is possible | £20–£200+ | May miss edges; robot requires smooth flat glass and a power source |
| Professional window cleaner | Any height, guaranteed results, no DIY effort | Varies by property | Ongoing cost; requires scheduling |
When to Call a Professional Window Cleaner
Not every window is safely within DIY reach. If the windows are above the second floor, face an awkward elevation, or the building layout makes ground-level access impossible, the tools above won’t cut it — and improvising with a ladder at that height is not worth the risk.
A professional window cleaning company has the equipment and training for exactly this. Depending on the building, they can clean from the ground using professional water-fed extension poles, which can reach up to the 4th floor and higher. For anything above that, or where the building layout requires it, a rope access window cleaning team takes over. The result is reliably clean glass without any of the risk falling on you.
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Frequently Asked Questions
What is the best way to clean outside windows without streaks?
Clean on a cloudy day so the solution doesn’t dry before you squeegee it off. Apply the solution with a strip washer, then use a squeegee working from the top corner downward in overlapping strokes with even pressure. Wipe the blade with a microfiber cloth between each pass — a dirty blade is the most common cause of streaks. See our full guide: How To Get Streak Free Windows.
How do I clean upstairs outside windows from inside?
Use a U-shaped telescopic pole through a slightly open window to reach the outside pane without leaning out. Alternatively, a robot window cleaner can traverse the outside of sealed panes automatically, or a magnetic window cleaner lets you move an outer pad from the inside. For upper floors where none of these are practical, a professional window cleaner with water-fed poles is the reliable option.
How do I clean outside windows from inside an apartment?
The most practical tool depends on your window type. If the window tilts or opens inward, a U-shaped telescopic pole works well. For fully sealed units, a magnetic cleaner suited to the glass thickness or a robot cleaner with suction are the main options. If the windows are on a high floor and none of these give full coverage, a professional window cleaning service is the safest and most effective choice.
Conclusion
Most outside windows are cleanable without a ladder, without leaning out of anything, and without spending a lot of money on equipment. A telescopic pole and the right cleaning solution handles the majority of houses up to the second floor. For flats and upper-floor windows, the U-shaped pole, magnetic cleaner, and robot cleaner options close most of the remaining gap. The key is matching the tool to the window, not forcing one method onto every situation.
When the job is genuinely above safe DIY reach, calling in a professional isn’t a last resort — it’s just the sensible call. Clean windows once, done properly, and you won’t be back at it again in a fortnight.
I was very confused as to how to clean my windows outside, but your amazing article made it possible. I had a lot of fun with these easy tips cleaning the windows as soon as possible. Thank you for sharing this informative content with us.
I am going to be a dad soon so I don’t want to risk my life. You said that professional window cleaning services guarantee that I will be safe. I won’t touch a ladder or anything if I hire them.
I agree that not everyone has the right tools needed to clean high windows. A professional also has the experience. So I’d just trust them to get all of the work done.
This article is really helpful! As a neat freak, I had to try your tips. Hope they’re effective 🙂
Extremely useful ! Well explained about the important challenges
This post is very informative.
There are several cleaning methods that I found really useful here. It helped me keep my windows clean and sparkling. Yup, even the ones that are pbstructed by obstacles.
we give extra effort when it comes to cleaning outside windows. I value the overall aesthetic view of my house so I make sure we have arystal clear windows.