How to Clean Inside of Double Pane Windows? Risk-free and Effective Tricks

how to clean inside of double pane windows

Last Updated on October 2, 2023

Got a little dirt build-up between your double pane windows? You don’t have to call in the professionals!

Double-pane windows can be tricky to clean, as you must figure out how to get into the space between the two panes. But fortunately, there are a few safe and effective techniques you can use to make sure your double-pane windows are sparkling and free of dirt and grime.

Double-pane windows can accumulate dirt between panes. Effective cleaning methods include using vinegar and warm water, drilling holes and pointing a fan, or using an in-room dehumidifier. For moisture issues, silica gel packs between panes absorb moisture effectively. Regular maintenance ensures clear, dirt-free double-pane windows.

Using any of these methods can help ensure that your double-pane windows remain free from dirt, dust, and streaks.

With the right approach and materials, you can get your windows looking crystal clear in no time! Keep reading to learn more about the proper steps to clean double-pane windows effectively and safely.

Structural Specialties of Double-Paned Windows

Structural Specialties of Double-Paned Windows

Double-paned windows have two sheets of glass sealed together with a vacuum or gas. The gap between the glass panes is typically sealed with an inert gas such as argon or krypton so that the air or gas within the cavity remains in place while still allowing some heat transfer.

The pocket between the panes provides extra insulation for your home and helps maintain an even temperature throughout the year. You see, regular windows only have one pane of glass, which means that the cold air or hot air from the outdoors can easily come in and affect your indoor temperature.

But with double-pane windows, there’s an extra layer of insulation that helps keep your home more comfortable. Not only that, but because there are two panes of glass instead of one, the view from inside is much clearer than it would be with a regular window.

You can see outside very well! But it also means that dirt, dust, and other debris will stick to the panes easily.

It’s important to clean this space regularly. Otherwise, dirt and grime can build up and make your window look cloudy or foggy.  But the key is to do so without damaging the windows or compromising their insulation capabilities.

Let’s discuss the reasons behind the dirt accumulation in double-pane windows and the cleaning process in detail.

How Dust Accumulates Inside the Double Pane Windows?

Double-pane windows are an excellent choice regarding energy efficiency and visual clarity. However, dirt and dust can accumulate between the sealed space of the two panes over time, leaving you with a window that isn’t as transparent or well-insulated as it should be.

Here are some reasons why dust accumulates inside double-pane windows:


Dust can accumulate in double-pane windows due to condensation, wind, and other environmental factors. Condensation occurs when moist air comes into contact with a cold surface, such as a windowpane. As the moisture cools, it forms droplets of liquid on the glass and eventually evaporates, leaving behind particles of dust and dirt. Wind-driven dust particles can also enter a window when the air is turbulent, such as during storms or high winds.

Failed or Weakened Seals

Double-pane energy-efficient windows are designed to provide superior energy efficiency and protection from the elements. The double seal used in their construction helps keep out not just heat but also moisture, dust, and other pollutants, making them an ideal option for homeowners looking to reduce their energy bills and enhance the comfort of their homes.

However, these windows are not invincible and have a finite lifetime. Over time, environmental stresses can cause the window seals to weaken and degrade, leading to seal failure, and drastically reducing their effectiveness. Temperature extremes, high humidity levels, frequent opening/closing of windows, and ultraviolet sunlight exposure can all contribute to sealing failure.


Environmental factors such as pollen and other allergens collect in double-pane windows over time. This is especially true if your home is near heavy-traffic roads where pollutants are in the air.

Poor Installation

Other causes of dust accumulation include poor installation, where there are gaps in the seal or windowsills that allow outside air to enter. Depending on the size and severity of the gap, this can cause large amounts of dust to accumulate over time. In addition, if you live close to a highway or an industrial area, pollutants and other particles in the air can become trapped between the window panes and create a build-up over time.

Air leaks around poorly sealed double-paned windows can be responsible for increased dust buildup. Air leaks occur when there are gaps between two windows or around frames which allow more outdoor air into the home than necessary.

This additional incoming air contains more dust particles than normal which then settle onto the windowpanes over time, resulting in increased dirt accumulation inside your double-pane windows. Even if you don’t notice much dust collecting on surfaces inside your home, it could still be accumulating in your double-pane windows without you realizing it! 

Static Electricity

Furniture or curtains near double-pane windows can also increase dust accumulation due to the static electricity they create when moved or touched. When static electricity is created near a windowpane, tiny airborne dust particles are attracted to it and end up settling on the glass surfaces of the panes creating a visible layer of dirt that accumulates over time.

Fortunately, this buildup is preventable with regular maintenance and proper window installation. Make sure to regularly clean the edges and seals of your windows, check for air leaks around frames and windowsills, and have a professional inspect any signs of seal failure.

With regular attention, you can keep your double-pane windows looking clear and functioning properly for years to come.

How to Clean Inside of Double Pane Windows? Some of the Most Effective Methods

Depending on the window design, there are a few different ways of cleaning between the panes, with both drilling and non-drilling methods. 

Drilling Method

Drilling is the most common way to clean between double-pane windows. But it’s important to understand that drilling holes into the window should only be made as a last resort.

If possible, you should try to clean the window using other methods first. If those methods don’t work, you can drill one or multiple holes into the window frame.

  • Drill one or more holes, depending on the size of the window and the level of dirt buildup.
  • Using a hose with a gauze needle attachment, blow air or soapy warm water into the holes to remove any dirt trapped inside.
  • Wrap a thin lint-free fabric around a wire and push it through the hole to remove excess fluid and dirt.
  • Insert moisture absorbents like silica beads or cotton balls into the holes to eliminate any moisture trapped between the panes.

You may also consider placing a small fan near the double-pane windows to help circulate air throughout the area. This will ensure any moisture in the area will be properly dispersed and maintain a dry environment.

If there is still dirt, rinse it out with isopropyl alcohol. If rinsing does not work, you may need to use another tool, like a drain snake. 

To seal the hole after cleaning, you can use window putty or silicone caulk. 

Non-drilling Methods

Cleaning the double-glazed windows requires caution. Drilling into the window frames could cause serious damage and should be avoided. Fortunately, several non-drilling methods can effectively clean between double panes without risking breakage. 

Method 1: Vacuum Hose

One option is using a vacuum cleaner attachment specifically designed for this purpose. This method can be very useful for getting rid of dust and dirt between two glass panes, as well as removing any cobwebs or other debris.

The vacuum hose can reach deep into the hard-to-reach areas between the glass panes, making it easier to get them sparkling clean. Additionally, most vacuums have a long wand that can help you reach even further and provide better access in tight spaces. 

Method 2: Damp Cloth

  • Another non-drilling method involves using a damp cloth wrapped around a long pole, such as a mop handle or broom handle. This allows you to reach deep into the crevices of the window frames and wipe away dirt and grime while avoiding any drilling or damaging activities.
  • The cloth should be damp but not dripping wet; it’s best to use plain water so you won’t risk leaving any residues behind on your window frames or glass surfaces. If needed, mild detergents may be added if there are stubborn stains that need adjusting. 
  • You’ll also need a few tools, including a squeegee, microfiber cloths, and perhaps an old toothbrush too if you need to scrub away tougher dirt particles from hard-to-reach places. When using a squeegee for cleaning double-pane windows from the inside, ensure that it has soft rubber blades so that it won’t scratch against either side of the glass during the wiping motion.
  • Start from one corner and move across in straight lines towards another corner until all moisture is removed off each surface evenly.
  • To dry any remaining water residue, simply wipe down with a dry microfiber cloth afterward – no need for paper towels here!
  • Finally, don’t forget to clean the edges or corners where dirt builds up over time! A small brush such as an old toothbrush will come in handy here; just dip it into soapy water first before gently scrubbing away any stubborn debris lodged within each crevice or along frames before wiping down one final time with a microfiber cloth, as mentioned above!

Method 3: Compressed Air

Using compressed air is another popular non-drilling cleaning solution for double-pane windows, although this can be more costly upfront since an air compressor may have to be purchased for it to work properly. A small attachment can be used to fit the nozzle of an air compressor onto the window frame, allowing you to puncture a tiny hole in the seal between the two panes and blow out any dirt or debris.

Compressed air is great for removing debris like dried leaves, dirt particles, and spider webs from difficult spots that would require more laborious wiping efforts with a cloth. It also works well at dislodging larger pieces of dirt or grime that have become stuck in between two panes of glass over time; simply attach an air hose to the area where you’d like to start cleaning and blast away!

Be careful not to get too close when doing this, though, as it could create scratches on your window frame and glasses if done haphazardly. 

Method 4: A Dehumidifier

Using a dehumidifier in a room with double-paned windows is another suggestion. Place the dehumidifier within the room, close to the window, and turn it on. This will help reduce moisture build-up in between panes that can cause condensation.

For areas with high humidity levels, a dehumidifier can work very well. Ensure it’s not placed too close to any electronic equipment or cords, as this could pose an electrocution hazard! Or too close to the window, as it may cause the glass to become too cold and crack.

Method 5: Moisture Snake

Using a Water Snake Moisture Absorber for double-pane window cleaning is an incredibly convenient and practical solution. These absorbent materials quickly soak up water from leaks or storms and prevent damage from condensation along windowsills.

They can hold up to ten times their weight in water, ensuring maximum absorption results. Plus, they’re made with durable material that prevents deterioration even after multiple uses.

This makes it convenient for homeowners to use over time without worrying about replacement costs. The water snake moisture absorber is also very easy to install – simply place it between the double-pane windows and let it do its job! It will effectively absorb any dust particles and moisture buildup, leaving your windows clean and looking good again!

Method 6: A Hair Dryer

Using a hairdryer on the affected area will provide a quick fix by evaporating the moisture from the glass. However, it is important to note that this is only temporary and does not address the underlying issue.

It’s essential to check for any cracks or other damage in your windows that could be allowing moisture in before you use any heat. 

Overall, keeping your windows clean does not involve drilling into materials or risking damaging them accidentally; by understanding these non-drilling methods outlined above, you can maintain your double pane windows without causing any harm or compromising their quality along the way!

What are the Risks of Drilling into a Double-Pane Window?

Cleaning the sealed inside of the double-pane windows is a tricky endeavor, and drilling into the glass can be dangerous. Please keep in mind that this should only be done as a last resort due to the potential risks.

Drilling a hole large enough to fit an adequate cloth wrapped around a wire can result in breaking the glass panes or even injuring someone. Further, it could eliminate the efficiency of the seal between window panes, allowing for easy access of moisture, dust, and debris through the hole.

Additionally, plugging up the hole with a sealant may not be reliable, as plugs can become damaged over time and fail to act effectively against moisture and other particles. Cleaning between double-pane windows, it’s best practice to attempt other methods first before attempting to drill holes into the glass.

If done improperly or without caution and proper safety measures in place, drilling holes into glass can result in costly repairs or even serious safety hazards.

What are the Maintenance Tips for Double Pane Windows?

Taking good care of your double-pane windows is essential to maintain their performance and longevity.

  • To get the most out of your windows, start with controlling direct sunlight exposure by using blinds or curtains.
  • When cleaning the glass surfaces, be gentle and avoid abrasive scrubbing. It’s also important to check for signs of wear or damage on seals and components, as well as regularly inspect frames for rotting wood or structural damage.
  • Also, replacing worn-out weather stripping is recommended to avoid deterioration of the window’s performance over time.
  • Always use a microfiber cloth to wipe down the glass, as this is less likely to leave streaks.
  • Use a damp, soapy cloth and a small brush for hard-to-reach spots near frames or corners where dirt accumulates.
  • The key long-term fix for condensation on the inside pane of your windows is ensuring good ventilation. This helps to regulate temperature and humidity levels, reducing the amount of moisture in the air which accumulates on cold surfaces like window glass.

Open windows when possible, or install an exhaust fan in areas where condensation is problematic. 

These steps will help your windows remain in top condition and provide years of comfortable living in your home. Proper care and maintenance of your double-glazing units should last many years without needing replacement – providing great insulation while keeping energy costs low.

Should I Replace My Fogged Double Glazed Windows, or Can They be Repaired?

Double glazing, an increasingly popular feature in homes today, provides great insulation and can greatly reduce energy bills. However, when the seal between the two sheets of glass breaks down or fails, moisture will collect between them, and the windows will fog up. Although it might be tempting to replace the windows simply, there are several options for repairing or restoring fogged double-glazed windows. 

The most cost-effective option is desiccant drying – using a specialized vacuum cleaner to draw out the moisture. This process removes any excess condensation and seals up air leaks that might have caused moisture build-up.

This method is often much cheaper than replacing the entire window, so it’s worth considering before opting for a costly replacement. Another option is to use a dehumidifier in the room where the window is located, reducing humidity levels inside and preventing further fogging.

Lastly, if you want to remove existing moisture from between your double-glazed windows completely, you can use a special solvent or add-on product that helps evaporate any remaining water vapor within the window frame. 

Whatever repair or restoration method you choose for your fogged double-glazed windows, always hire professionals who specialize in this type of work, as they’ll be able to identify potential problems and recommend suitable solutions. Regular maintenance, such as inspecting seals and frames annually, should also help avoid future problems with fogging or other issues related to double glazing.

Last But not Least

As a final note, always remember to check the manufacturer’s instructions before attempting any of these techniques. Cleaning double-pane windows is not a one-size-fits-all process; some frames or glazing systems may require specialized cleaning due to their unique design.

We hope this guide has been able to help you learn how to clean double-pane windows with ease! Keep up the regular maintenance, and your windows should sparkle like new ones for years. By ensuring your home has good airflow and installing adequate insulation, you can make a big difference in reducing condensation and preventing damage from occurring in the future.

Happy cleaning!

How to Clean Inside of Double Pane Windows? Risk-free and Effective Tricks

2 thoughts on “How to Clean Inside of Double Pane Windows? Risk-free and Effective Tricks

  1. I live in a condo that has the side by side windows that slide open.
    The the edge of edge of the windows from the outside have so many things that fall off the tree in spider webs and other things. Caked on there. It’s caked on there and I can’t figure out how to get rid of it other than a power washer. That would be okay for the outside where the screens are. But they’re also double pane windows. And I can’t get them clean on the inside. It’s driving me insane.
    I have one huge window that is from a little below the ceiling to floor level. That 1 is the one with the most spider webs. And everything else and my downstairs neighbors have all their outside furniture. And they’re deck and everything else right there. I need help

    1. Sorry for the late reply.
      If the debris and spider webs are located on the outer edge of the windows from the outside, it’s important to approach the cleaning carefully to avoid damage to the windows or injury to yourself. There are practical steps you can take to tackle this task effectively.

      First, prioritize safety. Use a stable ladder on a level surface, and if the windows are at significant heights, consider hiring a professional window cleaner for a safe and efficient solution.

      Gently sweep away loose debris and spider webs from the outside edges of the windows using a soft brush or broom. Take care not to apply excessive force to avoid damage to the glass.

      Use a garden hose with a spray nozzle to dislodge caked-on debris and other materials. Start with a gentle spray and gradually increase pressure if needed. Be cautious not to direct water into the window frame unless it is properly sealed.

      Prepare a cleaning solution using equal parts of white vinegar and water or use a mild dish soap diluted with water. Apply the solution to the glass with a sponge or soft cloth.

      Scrub the glass gently using a microfiber cloth or sponge. Avoid abrasive materials to prevent scratching.

      For stubborn stains, a commercial glass cleaner might be necessary. Follow the manufacturer’s instructions and rinse thoroughly with clean water to remove any residue.

      Ensure the windows are thoroughly rinsed with clean water to eliminate any traces of cleaning agents and dirt.

      Allow the windows to air dry or use a lint-free cloth to pat them dry, ensuring a streak-free finish.

      To minimize future debris accumulation, consider installing fine-mesh screens on the outside of your windows. These screens act as a barrier against debris and prevent spiders from building webs directly on the glass.

      If you find the task challenging or risky, don’t hesitate to engage a professional window cleaning service with the expertise and equipment to handle difficult-to-reach windows.

      Take your time and exercise caution throughout the cleaning process to achieve optimal results.

Leave a Reply

Your email address will not be published. Required fields are marked *

Scroll to top