If you've been cleaning your windows the same way your parents or grandparents did, it might be time for an upgrade! Just like technology has improved over the years, so have cleaning products, tools, and techniques. With the right approach, you can make your windows sparkle without the frustration of streaks or smudges. In this guide, we'll walk you through the best ways to clean both interior and exterior windows—beyond just glass cleaner and paper towels.

woman cleaning a window with a green microfiber glass cloth

Window Anatomy 101

Before we jump into the actual cleaning, let's take a look at some basic window terminology:

  • Glass panes – The transparent sections of your window or door.
  • Frame – The structure that holds the glass panes in place.
  • Casing – The decorative trim where the window meets the wall.
  • Sills – The ledge at the base of the window frame.

Now that we know what we’re dealing with, let's get into the cleaning!

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Cleaning Interior Windows

For interior windows, a simple and effective DIY cleaning solution can be made with equal parts white vinegar and water in a spray bottle. You'll also want to have a good quality flat-weave microfiber cloth on hand to ensure a streak-free finish.

Steps:

  1. Spray the vinegar-water solution directly onto the glass.
  2. Fold your microfiber cloth into quarters for maximum efficiency.
  3. Use an S-pattern to wipe from top to bottom, ensuring you cover the entire pane without leaving streaks.
  4. For the window sills, frame, and casing, use the same solution with a separate cloth.

If your window frames are wooden, be cautious with liquid cleaners—sometimes a simple dusting is best to avoid damage.

Cleaning Exterior Windows

Exterior windows tend to accumulate more dirt and grime, so they require a slightly different approach.

What You’ll Need:

  • A good double-sided window squeegee.
  • A bucket filled with:
    • 1 gallon of warm water
    • 1 cup of white vinegar
    • 1 teaspoon of dish soap (increase to 1 tablespoon for extra dirty windows)

Steps:

  1. Dip your squeegee into the solution, ensuring it's thoroughly saturated.
  2. Start at the top of the window and work your way down, using broad, overlapping strokes.
  3. Flip the squeegee over to the rubber side and repeat the motion to remove excess water and prevent streaks.
  4. If necessary, dry the edges with a microfiber cloth to ensure a pristine finish.

Pro Tip: Pick the Right Day

An overcast day is ideal for cleaning exterior windows. Direct sunlight can cause your cleaning solution to dry too quickly, leading to streaks. If a cloudy day isn't an option, clean early in the morning or in the evening when the sun isn’t as strong.

Tackling Window Condensation and Mold

If you live in a colder climate, you may notice condensation forming on your windows during the winter. This moisture can lead to mold and mildew buildup, particularly on window sills. To prevent this:

  • Wipe down your window sills regularly during colder months.
  • If mold appears, clean it with a solution of equal parts borax and vinegar.
  • Apply a mold and mildew treatment spray to keep future growth at bay.

With the right tools—like a premium flat-weave microfiber cloth designed for windows and mirrors, and a double-sided window squeegee—cleaning your windows doesn’t have to be (too much of) a chore.

March 25, 2025