How to Clean Windows Like a Pro: Streak-Free Tips

There’s nothing quite like a sparkling clean window to lift the look of your entire home. Natural light floods in, views feel clearer, and your space instantly looks brighter and fresher. But as anyone who’s battled with smears and streaks knows, getting that professional, crystal-clear finish can be trickier than it seems.

If you’re ready to leave cloudy panes behind, here’s how to clean your windows like a pro—streak-free and stress-free.

1. Choose the Right Time

Believe it or not, the weather plays a big part in how well your windows clean up.

Best time: A dry, overcast day
Avoid: Direct sunlight (it causes the cleaning solution to dry too quickly, leaving streaks behind)

If the weather’s too hot or sunny, it’s better to wait for a cooler day or clean in the early morning or late afternoon.

2. Gather Your Kit

You don’t need anything fancy—just the right tools and a bit of elbow grease.

Professional window cleaning essentials:

• A bucket of warm water
• Mild washing-up liquid or white vinegar
• A good-quality squeegee
• A microfibre cloth or lint-free towel
• A sponge or soft applicator
• An old toothbrush (for corners and stubborn dirt)
• Optional: Window vacuum for extra ease

3. Start with the Frames and Sills

Before you tackle the glass, clean the frames and windowsills. Dust, cobwebs, and grime gather here and can mess up your work if left untouched.

• Use a damp cloth to wipe down plastic or wooden frames.
• For stubborn mould or mildew, mix one part white vinegar with one part warm water.
• Dry thoroughly to avoid drips running down your freshly cleaned glass.

4. Use the Right Cleaning Solution

You can buy specialist window cleaners, but a homemade mix often works just as well—if not better.

DIY cleaning solution options:

• A few drops of washing-up liquid in warm water
• A 50/50 mix of distilled white vinegar and water
• Add a splash of rubbing alcohol for faster drying (optional)

Avoid anything that suds up too much—it can leave residue and streaks.

5. Apply and Squeegee Like a Pro

1. Dip your sponge or cloth into the solution and apply it generously across the window.
2. Loosen dirt with circular motions, paying attention to corners and edges.
3. Use your squeegee starting from the top left corner.
   • Pull down in one smooth stroke.
   • Wipe the blade with a clean cloth after each pass.
   • Slightly overlap each stroke to avoid streaks.

Top tip: Horizontal strokes on the inside, vertical on the outside. That way, you can tell which side any leftover streaks are on.

6. Buff for a Crystal-Clear Finish

After squeegeeing, use a dry microfibre cloth or lint-free towel to:

• Wipe away any drips at the bottom
• Buff out any small marks or smears
• Catch missed spots around the edges

Avoid kitchen roll or newspaper—they often leave lint or ink behind.

7. Don’t Forget the Extras

• Window tracks: Use a vacuum attachment or toothbrush to clean dirt and debris from sliding tracks.
• Window screens: Wipe with a damp cloth or rinse with a hose outside.
• Hard water stains? Rub with a bit of vinegar or lemon juice and let sit before rinsing.

How Often Should You Clean Windows?

• Exterior windows: Twice a year (more often if you live near the coast or on a busy road)
• Interior windows: Every 3–4 months, or whenever they start looking smudged

Final Thoughts

With the right method and tools, achieving streak-free windows isn’t just for professionals. A little know-how and a calm, methodical approach can go a long way. And once you see the difference clean glass makes to your home, you might even find it a satisfying task.

So roll up your sleeves, pick a cloudy day, and let the light shine in.