Start with the Basics
If you’ve ever looked out freshly cleaned windows, you know the difference is huge. But a common question we get from Auckland homeowners is: how long does a professional window clean actually last?
The answer depends on a few things — like your location, the weather, and how well the windows were cleaned. On average, you can expect your windows to stay looking great for 6 to 12 weeks after a professional clean. But if you live near the coast, on a dusty road, or under big trees, you may notice dirt building up sooner.
Coastal Homes Get Dirtier Faster
If you're on the Hibiscus Coast or the North Shore, sea spray and wind can bring salt particles that stick to the glass and frames. These don’t just leave marks — they can etch the glass over time if not cleaned off regularly.
In these areas, we recommend exterior window cleaning every 8 to 12 weeks to keep ahead of salt and mineral buildup. Homes further inland may only need a clean once per season depending on exposure and airflow.
What Affects How Long It Lasts?
Weather: Rain doesn’t clean windows — it often leaves mineral spots behind if the glass already has dust or salt on it.
Surroundings: Trees, construction sites, busy roads, or even birds can all shorten the time between cleans.
Cleaning method: Professional cleaners using pure water systems leave no soapy residue, so glass stays cleaner for longer. We only use purified water for streak-free, long-lasting results.
Maintenance habits: Keeping cobwebs, sills, and tracks clean helps prevent grime from building up again quickly.
Interior Windows Stay Clean Longer
Inside windows are protected from weather and dust, so they usually only need a professional clean once or twice a year. Exceptions include windows in bathrooms, kitchens, or homes with pets and small children, where smudges build up faster.
We often recommend doing interior and exterior cleaning at the same time to maximise clarity and brightness throughout your home.
Tips to Keep Your Windows Cleaner for Longer
Use spider treatments to prevent webs from building up
Trim trees and plants near windows where possible
Don’t spray garden hoses or sprinklers onto windows
Clean your flyscreens, sills, and frames between visits
Consider setting up a regular maintenance plan so you don’t fall behind
Why Choose a Regular Cleaning Plan?
Many of our customers opt for a 3-monthly or 6-monthly plan — especially in coastal areas or on modern homes with large glass panels. With a plan, we lock in your next clean and offer extras like free spider treatments or discounts on multiple services.
It also saves you time — no need to remember to book. We’ll get in touch when it’s due, so your windows always stay looking their best.
Final Thoughts from Asher
A good window clean can last a couple of months — but keeping them that way takes a bit of strategy. That’s where we come in. At Winning Window Cleaning, we use the best equipment, eco-friendly pure water, and safe ladder-free methods to give your home the sharpest finish possible.
Whether it’s a one-off clean or a regular plan, we’ll help you get the most out of every job.