Why You Should Never Clean Your Windows on a Sunny Day (2024)

Out of all the household chores there are to tackle, figuring out how to clean your windows might not be at the top of your list. But it definitely should be.

If you neglect your windows for too long, you're left with dust and grime that can prevent much-needed sunlight from pouring into your home. It's not a good thing for indoor houseplants, and the lack of natural light can even put a damper on your mood during the day. Plus, you might also be dealing with thick streaks — the result of cleaning your windows improperly — which are unsightly in an otherwise perfect room.

That's why we checked in with Carolyn Forté, executive director of the Good Housekeeping Institute's Home Care & Cleaning Lab, for her best tips to keep your windows at home — both inside and out — looking spick and span.

Follow Forté's expert tips below, including effective window-cleaning products (there's even a homemade window cleaning solution!) and methods to enjoy sparkling windows once and for all.

1. Start by removing dust from the window frame, tracks and sill with a vacuum, duster or cloth. Do the same with blinds or shades. If you have curtains, this is a good time to remove and wash them, following the care instructions.
2. To clean window screens, remove them and vacuum or brush them to get rid of dust. If they need a deeper clean, wash them with a warm, sudsy mix, then rinse and allow them to dry completely.
3. Spray the windows with a generous amount of glass cleaner.
4. Using a lint-free paper towel or microfiber cloth, wipe the windows from top to bottom. If you see any streaks, give them another wipe until the glass is clear.
5. While the screens are drying, wipe the outside of your windows and frames with a soft brush or disposable cloth to remove loose dirt and dust.
6. Repeat steps 3 and 4 on the outside window glass. You’ll probably have to use a little more elbow grease (or just a few extra rounds of spraying and wiping) to get rid of all the grime from outside. Depending on the design of the windows, you may be able to clean both sides from inside the house, or if you have removable storm windows, take them off completely for cleaning.
7. Pop your screen back in, hang your curtains and step back to marvel at the shine!

Don't hold back on the spray, especially if the windows look extra dirty. "You need plenty of cleaner to dissolve and suspend the dirt so it can be completely wiped away — skimp and you'll be seeing streaks," Forté says.

She recommends Invisible Glass Cleaner. The aerosol mist stays where you spray it for fewer drips and mess. Check out more of our top-tested cleaners, depending on the job:

Homemade Glass Cleaner

If you would rather go the DIY route, try whipping up this homemade vinegar cleaner:

• 2 cups water
• 1/2 cup white or cider vinegar
• 1/4 cup rubbing alcohol 70% concentration
• 2 drops grease-cutting dish liquid
• 1 to 2 drops of orange essential oil (optional if you enjoy scented)

Combine the ingredients and pour them in a spray bottle. If you have kids or pets, write the ingredients on the outside of the bottle for safety.

If you live in an area with hard water, consider using distilled water to make a DIY glass cleaner. By the way, the vinegar in this DIY cleaner will also help with those stubborn stains. The U.S. Geological Survey says it’s the acidity of vinegar that allows the minerals left behind from hard water to be washed away.

Mistake #1: Cleaning windows on a sunny day.

When it comes to cleaning your windows, an overcast day is your best bet, according to Forté. "Do this job in the blazing sun and the cleaner will dry onto the hot windows before you get to wipe it off, leaving hard-to-remove streaks," she says. Consider beginning on the shady side of your home if the weather fails to cooperate.

Mistake #2: Failing to remove dirt and dust before spraying cleaner on top.

Use a handheld vacuum, a good brush or your machine's dust attachment to remove dirt from the window frame. That way, it won't turn the dirt into a goopy mess once you spray your cleaner. If your window screen still appears quite grimy, pop it out and use a soft brush and hot, sudsy water to wash it well. Once you're done, rinse it and leave it to dry before placing it back in the window.

Whenever you need to dust blinds or shades quickly, Forté suggests using a microfiber duster on both sides. You can also open the slats and pass over each one with a damp cloth. Finish the job with a dry cloth.

LAB TIP: Refresh curtains at the same time by putting them in the dryer for 15 minutes on an "air-only" cycle and rehanging quickly to keep wrinkles at bay.

Mistake #3: Using an old cotton rag to dry windows.

Some people like drying panes with newspaper, but you're better off using reusable microfiber cloths. "They are super absorbent, washable and leave the glass shiny and streak-free," Forté says.

Try Casabella Microfiber Glass Cloths, which have a special honeycomb texture to nab water spots, smudges and dirt from mirrors and glass without scratching.

If you would rather use paper towels, choose a brand that's up to the task. Weak paper towels can shred and leave lint behind. In our test of the best paper towels you can buy, Bounty Regular held up the best when wet.

Another favorite of the Good Housekeeping Institute: is the E-Cloth Window Cleaning Kit, which won a 2023 Good Housekeeping Cleaning Award. All you have to do is dampen the waffle cloth to get rid of any build-up and then use the included polishing cloth to remove streaks.

Mistake #4: Wiping with a squeegee.

"Professional window cleaners swear by them, but you have to know how to use them correctly," Forté says. "You squeegee down and where does the water go? On the floor."

Because of the potential mess and drip factor, she avoids using squeegees, especially for small panes, but they can be more helpful on bigger, picture windows.

Mistake #5: Cleaning all of your windows in one day.

You only need to clean your windows once or twice a year, Forté says, but it's even easier if you divide the job room by room. When you're cleaning, wipe one side of the window horizontally and the other vertically. If any streaks do form, you'll easily know whether they're on the outside or the inside.