Double-hung windows are the most common style found in homes because they offer a beautiful, classic look and excellent ventilation. With any window, dirt, pollen, and hard-water stains can quickly build up on the glass over the months, turning your nice view outside into a frustrating reminder that you need to clean your windows. If you’re wondering how to clean a double-hung window, this guide explains how to do it safely, protecting you and the window sashes. Not only will they look better, but your windows will last longer as well.

Double-Hung Window Cleaning Schedule

Cleaning your windows twice a year is probably sufficient in the Columbus, OH area. Spring and fall are ideal times to do this. Double-hung windows have two sashes: one at the top that you can lower and one at the bottom that you can raise. What makes cleaning them such a breeze is that these sashes tilt inwards, so you can clean the exterior without having to climb ladders or put yourself in dangerous situations.

Best Window Cleaning Tools

Having the right supplies is step number one. Gather everything together and make sure it’s within reach once you start. We recommend the following items:

  • Cloth towels or clean microfiber cloths
  • A soft-bristled brush
  • A reliable cleaning solution (a mix of water and dish soap works great, or you can use an ammonia-free glass cleaner)
  • A high-quality squeegee
  • A drop cloth to protect your floor

Step-by-Step Guide to Clean Double-Hung Windows

Cleaning windows shouldn’t involve excessive amounts of water or cleaning solution. However, it’s a good idea to lay down a drop cloth to protect floors during the cleaning process. With the window unlocked, wash the exterior panes first by following this process:

Access the Exterior Panes

  • Lift the bottom sash a few inches up the track
  • Locate the tilt latches on the bottom sash, which are usually positioned on both outside edges at the top of the sash
  • Disengage these latches and carefully pull the top of the lower sash inward toward your body
  • You must support the sash while it’s tilted inward by either resting it securely against your body or gently placing it on the sill
  • Don’t apply downward pressure on the sash without additional support; otherwise, the window will pop completely out of its track
  • While supporting the lower sash, lower the top sash a couple of inches
  • Disengage its tilt latches and pull the top inward toward you, just like you did with the bottom window pane

Clean the Exterior Panes of the Top Sash

  • Take your soft-bristled brush and sweep away any caked-on dirt from the frame
  • Pay special attention to the corners where debris loves to hide
  • Wipe the loose dirt away with a dry microfiber cloth
  • Wash the frame gently with your cleaning solution and a clean cloth
  • Spray the exterior glass generously with your chosen cleaning solution
  • Starting at the very top, use your squeegee to wipe the liquid away
  • Move horizontally from left to right or right to left, always wiping the squeegee blade dry with a clean cloth after each pass to prevent water streaks from forming
  • Once the top sash is perfectly clean, gently push it back into the vertical track and slide it all the way up
  • Repeat the same brushing, spraying, and squeegee process for the bottom sash, then return it to its standard closed position

Clean the Interior Panes

  • Washing the inside glass follows a very similar routine, but you don’t need to tilt the sashes inward
  • Gently brush away any loose dust along the interior frame and sill, or just wipe it down with some cleaning solution and a clean cloth
  • Spray your ammonia-free cleaner or soapy water directly onto the top sash
  • Squeegee the liquid away horizontally, remembering to dry the rubber blade after each pass completely
  • Move down to the bottom sash and repeat the steps until the entire interior is clean and streak-free

Common Mistakes to Avoid

If you follow our double-hung window cleaning guide closely, you should have no problems with this DIY project. These are common mistakes to avoid:

  • Forgetting to Tilt the Bottom Sash – Always open and tilt the bottom sash first before you try to tilt the top sash inward. The window mechanism requires the bottom pane to be out of the way.
  • Using the Wrong Cloth – Paper towels or old bath rags often leave behind annoying lint and messy streaks. Stick to microfiber and a squeegee for a flawless finish.
  • Choosing Harsh Chemicals – Avoid using cleaners that aren’t made for glass. Harsh products can sometimes damage frame materials or leave residue.
  • Leaving the Sash Unsupported – Never let a tilted window hang freely. Always support it with your body or have a partner hold it so it does not fall out of the frame.
  • Skipping the Outside – Rain won’t keep your exterior panes clean. The tilt-in feature is there for a reason. Clean the outside for the best results.

When to Call a Professional

Double-hung windows can be safely maintained at any level of the house. Tilting panes make access straightforward. However, if your home has other window styles, such as garden windows or custom bay windows that are difficult to reach, it’s best to hire professional window cleaners. They have the tools to clean large panes and the safety equipment to prevent injuries or dangerous situations.

Are Your Windows Beyond Cleaning?

You can keep your home’s exterior looking its best by cleaning double-hung windows safely a couple of times a year. However, if cleaning doesn’t improve their appearance due to foggy glass or chipped frames, or if you feel drafts, it’s time to consider replacement windows. Contact Rosati Windows in Columbus, OH for a free, no-obligation estimate for new windows in your home.