Residential
Professional window cleaning versus doing it yourself
Top Notch Exterior Cleaning · 6 min read · 8 November 2026
Cleaning your own windows works well for ground-floor glass you can reach safely and clean quickly. It stops working at height, on large panes, on second storeys and on glass with hardened build-up. Professional cleaning is about safety, equipment and a streak-free finish — not about a job you could never do at all.
Where DIY is genuinely fine
There are plenty of windows worth cleaning yourself. A ground-floor bedroom window, a glass door onto a courtyard, a small bathroom pane — all of it can be done in ten minutes with a bucket, a squeegee and a cloth.
If your property is single-storey, the glass is modest in size and you can reach everything from the ground, DIY is a reasonable choice. Nobody needs to pay for that.
Where it stops working
Height
Ladders, sloping ground and second-storey glass are where DIY turns into a safety question. Falls from ladders are one of the most common household injuries, and reaching sideways from a ladder to reach an awkward pane is how most of them happen.
Large panes
A big window is unforgiving. A cloth leaves a film; a squeegee used badly leaves lines; the edges need attention the moment you finish. On a large single pane, small technique problems become very visible.
Hardened build-up
Salt film, mineral spotting, sap and construction residue need specific treatments and dwell time. Wiping harder does not remove them. This is where DIY usually produces disappointment rather than a bad result.
Frames and sills
Most DIY jobs stop at the glass. Frames, sills and tracks are where the finished look lives, and they take the most time.
What professional equipment actually changes
It is not magic, and it is not a secret formula. It is three things:
- Purified water for exterior glass, which dries without mineral spotting
- Proper squeegee technique — one pass, clean edge, no cloth finish on interior glass
- Reach equipment, so upper glass is cleaned from the ground rather than from a ladder
The difference you notice is usually the absence of streaks and the edges being finished rather than smeared.
The time calculation
A single-storey home with 15 windows might take a household two to three hours including setup, fetching water, moving furniture and re-doing the ones that streaked. A professional clean of the same property takes a fraction of that, and the result is more consistent.
If your time is worth more than the price difference, the practical answer is straightforward. If it is not — and you enjoy it — there is nothing wrong with doing it yourself a couple of times a year and booking a professional clean for the interiors or the two-storey glass.
A sensible middle path
Many Melbourne households do exactly this:
1. Clean the easy ground-floor glass themselves between visits
2. Book a professional clean for the full exterior twice a year
3. Add interior glass once a year, usually before entertaining or after winter
That keeps the property looking consistent without paying for the easy windows every time.
Where DIY risks damage
A few things are worth knowing before you start:
- Abrasive cloths and pads scratch glass and coated surfaces
- Harsh chemicals can mark powder-coated frames and seals
- Pressure washers used on glass can force water past seals
- Ladder work near gutters and power lines is where accidents happen
None of this means don't clean your own windows. It means know which windows to leave alone.
Frequently asked questions
Only from stable ground with proper equipment. Reaching sideways from a ladder is where most injuries happen, and it is the point where a professional clean is usually the cheaper option overall.
Usually a cloth finish, too much detergent, or cleaning in direct sun so the glass dries before it is squeegeed. A clean squeegee edge and shade make the biggest difference.
It can be, mainly for the frames, sills and interior glass. If the glass is easy to reach and clean, doing it yourself between professional visits is a sensible compromise.
About this advice
Written and reviewed by the team at Top Notch Exterior Cleaning, Melbourne window cleaning specialists working on homes, commercial properties, strata buildings and apartments. This article reflects how we actually approach the work — not general advice copied from elsewhere.
Keep reading
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Window cleaning in Melbourne is priced per property, not per window, because the work depends on glass size, storeys, access and how much build-up has to come off. A single-storey home cleaned outside only costs less than a two-storey home cleaned inside and out. Quotes are free, and the only reliable price is one based on your actual property.
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