7 things people with clean windows always do – and why sunshine is the enemy

Clean, streak-free windows instantly brighten a home, making rooms feel bigger and more inviting. But keeping windows spotless isn’t just about wiping them down occasionally – it requires a few key habits to remove dust, grime, and water spots effectively.

People with consistently sparkling windows follow a routine that ensures a streak-free finish and long-lasting cleanliness.

From dusting first to cleaning when it's cloudy, adopting these seven simple cleaning tips will give you a professional-level shine all year long.

1. Dust first

Before applying any cleaning solution, removing dust, cobwebs, and loose debris is essential.

Karina Toner, operations manager at Spekless Cleaning, says, 'Skipping dusting means you’ll smear dust and dirt around when you apply a cleaner, leading to streaks. Use a dry microfiber cloth or a duster to remove loose dirt first. If the windowsill and frame are dusty, clean those first so dust doesn’t fall onto the freshly cleaned glass.'

The Loheer Handheld Cordless Vacuum from Walmart is lightweight yet powerful, and has all the brushes and nozzles you need to get at tricky corners. Toner also recommends the Black+Decker Dustbuster Cordless Handheld Vacuum from Amazon, adding, 'It's lightweight and is great for getting dust out of window tracks.'

2. Scrape debris

Outdoor windows often accumulate stubborn grime, such as bird droppings, sap, or paint splatters, that regular cleaning solutions can’t dissolve.

Toner says, 'Paint splatters, tape residue, and bird droppings need more than just cleaner. Spray glass cleaner first to lubricate the surface, then use a razor blade at a 45-degree angle to scrape debris off.

'Avoid using your scraper on dry glass – it increases the risk of scratching. I recommend Goo Gone Adhesive Remover Spray Gel from Amazon, which softens paint or any sticky residue.'

3. Choose the right cleaning solution

Not all glass cleaners are created equal, and some leave behind streaks or residue. The same can be said for certain methods, such as the Victorian window cleaning hack we recently tried here at Homes & Gardens.

Wells Ye, founder of Fresh Tech Maid, says, 'Many people just grab any old cleaner or, worse, use soap and water. The problem? Some products leave behind a residue that attracts dust, while others can damage window coatings over time. The right cleaning solution ensures a streak-free finish and protects your windows.

'Look for a streak-free formula specifically designed for glass. If you prefer a DIY solution, mix equal parts white vinegar and water with a few drops of dish soap in a spray bottle.'

Great Value Distilled White Vinegar from Walmart, Dawn Platinum Ez-Squeeze Dish Soap from Target, and this two-pack of Teyssor Spray Bottles from Amazon are all popular products with our cleaning pros.

Whether opting for commercial sprays, steam cleaning windows, or creating your own glass cleaner, avoid harsh chemicals that can damage window seals or tint.

4. Squeegee

A professional-quality squeegee is the secret weapon of those with gleaming windows.

Ye says, 'Even if you use quality cleaners, your paper towels and normal cloths may transfer dust and create marks. Squeegees provide the best way to produce skilled-quality results without dirty streaks.

'Beginning at the top and working down, scrub the squeegee in long, even strokes all the way to the bottom. Clean the blade with a cloth after each stroke to stop streak formation. End the job by wiping the window edges with a microfiber towel.'

Ye recommends the Ettore Chrome Window Squeegee from Amazon, which is popular with professional window cleaners.

Lina DaSilva, founder of Toronto Shine Cleaning, favours the Unger Professional Stainless Steel Window Squeegee from Walmart. She says, 'It has a rubber blade which helps remove excess liquid without leaving marks.'

Toner adds, 'To prevent streaking, avoid pressing too hard – let the squeegee do the work. For large windows, overlap strokes slightly to avoid missed spots.'

5. Clean both sides

People with perfectly clean windows make a habit of washing both sides regularly.

Ye says, 'You can clean the inside of your windows as often as you like, but if you neglect the outside, they’ll never truly shine. Window exteriors collect dirt, dust, bird droppings, and pollution, which can make even a well-maintained home look dull. Use a hose to rinse off excess dirt before applying a cleaner. For high windows, use an extendable squeegee or a hose attachment.'

If you haven't washed the outside of your windows for a while, and lots of grime has built up, try the 'Pink and Blink' window cleaning hack, which has just four steps and takes less than an hour.

Toner recommends 30 Seconds Outdoor Window & Screen Concentrated Cleaner for Glass, which is available from Amazon. It's safe for use around plants, so you can use it on your exterior glass with peace of mind.

6. Polish

For a truly flawless finish, a final polish is key.

Toner says, 'Even after squeegeeing, a quick buff removes leftover moisture and streaks. Use a dry, lint-free microfiber cloth for the final buff, focusing on edges where water tends to pool. A crumpled-up newspaper also works well here!'

7. Clean when it's cloudy

A regular cleaning schedule is key to maintaining spotless windows, but timing matters just as much as frequency.

DaSilva says, 'It might sound strange, but when it comes to cleaning windows – sunshine is your enemy! Cleaning in direct sunlight is a common mistake because the cleaner dries too fast, leaving streaks.

'Instead, people with crystal-clear windows wait for a cloudy day, or opt for the early morning. This ensures the solution stays wet long enough to be properly wiped away.'

While it’s important to stick to a routine, it also helps to be flexible. If your planned cleaning day happens to be particularly hot or sunny, it’s worth postponing until the conditions are right. By adjusting your schedule to match the weather, you’ll get the best results with less effort, keeping your windows streak-free and sparkling.

Meet the experts

Karina Toner

With extensive contributions in Homes & Gardens, Real Homes, The Spruce, and many more, professional cleaner Karina has extensive knowledge of both commercial and residential cleaning.

Wells Ye

Wells Ye is founder of cleaning company, Fresh Tech Maid, which has been sprucing American homes for 25 years. The company's trusted technicians complete a rigorous 10-step evaluation process to ensure exemplary service.

Lina DaSilva

Lina DaSilva is the founder of the award-winning Toronto Shine Cleaning. With over five years of industry experience, she specializes in residential cleaning and home organization.

FAQs

How often should I clean my windows?

It depends on your environment and personal preference. In general, exterior windows should be cleaned at least twice a year, while interior windows can go longer between cleanings unless they collect noticeable dust or smudges.

If you live in an area with high pollen levels, coastal salt exposure, or heavy pollution, more frequent cleanings may be necessary. Regular maintenance, such as wiping down smudges and dusting, helps keep windows looking their best between deep cleans.

How do I clean a window screen?

The best way to clean a window screen begins by removing it from the window and gently brushing off loose dust and dirt with a soft brush or vacuum attachment.

For a deeper clean, mix mild dish soap with warm water and use a sponge or soft cloth to scrub both sides of the screen. Rinse thoroughly with a hose or under a showerhead, then let it air dry completely before reinstalling.

Regular cleaning helps maintain airflow and prevents buildup that can make screens look dingy.

What's the best way to prevent streaks on windows?

Using the right tools and technique is key to achieving streak-free windows. Always dust the glass first to remove loose debris, and use a quality glass cleaner or a DIY solution of vinegar and water.

A squeegee is the best tool for drying without streaks—start from the top and work downward in smooth, overlapping strokes.

Avoid cleaning in direct sunlight - choosing the right time is one of Barbara Costello's secrets to streak-free windows.

So there you have it – seven things people with clean windows always do. Clean windows make a home feel bright, fresh, and well cared for. Incorporate these simple habits, and your windows will stay spotless and gleaming year-round.

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