How to Clean the Inside of a Double Pane Window

Discover the simple steps to effectively clean the inside of your double pane windows, ensuring a spotless and clear view while enhancing their longevity.

Windows are a crucial part of any house, as they not only bring in natural light but also add to the overall aesthetic appeal. However, with time and usage, windows can accumulate dirt and grime that can be challenging to clean.

And when it comes to double pane windows, cleaning them from the inside can be even more tricky. But don’t worry! In this blog post, we will guide you through some simple steps on how to clean the inside of a double pane window effectively.

So let’s get started!

Key takeaways:

  • Cleaning the inside of double pane windows is important for maintaining their longevity.
  • Common issues with double pane windows include fogging, condensation, and broken seals.
  • Signs of broken seals include condensation between the panes and draftiness.
  • Tools and materials needed for cleaning include a vacuum cleaner, soft-bristled brush, glass cleaner solution, distilled water, spray bottle, and screwdriver set.
  • Steps for cleaning include inspecting for damage, removing the window sash, disassembling the window panes, cleaning the exterior first, opening the windows, vacuuming the interior, cleaning the glass surfaces, dealing with mold and mildew, removing hard water stains, cleaning the window frame, reassembling the window panes, sealing the window sash, and reinstalling the window sash.

What's Inside

What Is a Double Pane Window

Double Pane Window

The gap between the panes is typically filled with argon or krypton gas to improve insulation and energy efficiency. Double pane windows offer several benefits over single-pane windows, including better thermal insulation, noise reduction, and improved security.

The use of double pane windows has become increasingly popular in recent years due to their ability to reduce energy costs by preventing heat loss during winter months and keeping homes cooler during summer months. They can help reduce outside noise levels for a more peaceful indoor environment.

However, despite their many advantages over traditional single-pane options; double pane windows require proper maintenance to ensure optimal performance throughout their lifespan.

Common Double Pane Window Issues

window Condensation Resistance

However, like any other window type, they can develop issues over time that require attention. Some common double pane window issues include fogging between the panes, condensation buildup on the interior surface of the glass, and broken seals.

Fogging occurs when moisture gets trapped between the two panes of glass in a double-pane window. This is usually caused by a damaged seal or desiccant material that has reached its saturation point.

Condensation buildup on the interior surface of your double pane windows is another issue you may encounter if there’s high humidity inside your home or inadequate ventilation.

Broken seals are also common with older double-pane windows as they age and lose their elasticity over time due to exposure to extreme temperatures or weather conditions such as hailstorms or heavy winds.

Signs the Seals Are Broken On a Double Pane Window

severe window condensation

This can happen due to various reasons, such as age, weather conditions or improper installation. When this happens, you may notice some signs that indicate a problem with your window’s seal.

The first sign is condensation between the panes of glass. If you see foggy or hazy spots on your window that cannot be wiped away from either side, it means moisture has entered between the panes and caused damage to its seal.

Another sign of a broken seal is draftiness around your windows even when they’re closed tightly. The air coming in through these gaps can cause an increase in energy bills and make it harder for heating systems to maintain comfortable temperatures inside homes during winter months.

Lastly, if you hear whistling sounds coming from around your windows on windy days or nights – this could also be an indication that there’s something wrong with their seals!.

Tools and Materials Required

cleaning equipments window

You don’t want to start cleaning only to realize halfway through that you’re missing something essential.

Here are some of the things you’ll need:.

  • A vacuum cleaner with an attachment hose
  • Soft-bristled brush or microfiber cloth
  • Glass cleaner solution (make sure it is safe for use on double pane windows)
  • Distilled water
  • Spray bottle
  • Screwdriver set
  • Plastic sheeting or drop cloths

Once you have gathered all these items, it’s time to inspect your window for any damage before proceeding with disassembling.

Inspecting the Window for Damage

Inspecting Windows for Leaks

This step is crucial because if there are any cracks or chips in the glass, attempting to clean them can cause further damage and even lead to injury.

Start by examining the window frame for signs of wear and tear such as rotting wood or rusted metal. If you notice any significant issues with the frame, consider calling a professional before proceeding with cleaning.

Next, check both panes of glass carefully for scratches or cracks that may have occurred over time due to weather conditions or accidental impact. If you find minor scratches on either side of your double pane windows’ interior surface, don’t worry; they won’t affect their performance significantly.

However, if there are visible chips on one side that penetrate through both panes into space between them (the insulating layer), then this could be an indication that seals have failed and moisture has entered between layers causing fogging up effect which will require more than just cleaning from inside.

Removing the Window Sash

repair sash cord window

This step is crucial as it will allow you to access the interior of your double pane windows and clean them thoroughly. To remove a window sash, start by opening it fully and locating its locking mechanism.

Depending on your type of windows, this could be a latch or a lever that needs to be released.

Next, locate any screws or nails that are holding the sash in place and use an appropriate tool like a screwdriver or pliers to unscrew them carefully. Once all screws are removed from both sides of the frame, gently lift out one side at first before removing completely.

It’s important not to force anything during this process as doing so can cause damage not only to your windows but also yourself! If you encounter resistance while lifting out one side of the frame, stop immediately and check if there are still some screws left unremoved.

Disassembling the Window Panes

sash cords windows

This step is crucial as it allows you to access and clean the inside of your double pane windows effectively. To do this, start by removing any screws or nails that hold the sash in place using a screwdriver or pliers.

Next, carefully remove the sash from its frame and lay it on a flat surface such as a table or workbench. If your double pane windows are fixed in place and cannot be removed entirely, use caution when disassembling them.

After removing the sash from its frame, locate any clips holding together both glass panes within each section of your double-pane window. Carefully unclip these sections one at a time while keeping track of which side faces outwards so that they can be reassembled correctly later on.

Start With the Exterior

woman cleaning window

The outside surface of a window is exposed to various elements such as dust, dirt, and other pollutants that can accumulate over time. Cleaning the exterior first will prevent any debris from falling into your freshly cleaned interior surfaces.

To clean the outside surface of a double pane window effectively, use warm water mixed with mild soap or detergent and a soft-bristled brush or sponge. Avoid using abrasive materials like steel wool or harsh chemicals that can damage the glass panes’ coating.

Start by wetting down one section at a time and gently scrubbing in circular motions until all visible dirt has been removed. Rinse thoroughly with clean water before moving on to another section.

Open the Windows

Sliding Window with Lock

This step is crucial as it allows you to access both sides of each pane easily. Double pane windows are designed with a small gap between them that can accumulate dust and debris over time, making cleaning difficult.

By opening your windows, you will be able to reach this area more effectively.

To open your double pane window safely, locate the locking mechanism on each side of the sash and unlock them by turning or sliding them depending on their design. Once unlocked, gently push one side of the sash up while holding onto its opposite end until it reaches its maximum height.

Vacuum the Interior

vacuuming window

The first step is to vacuum the interior of your double pane window. This will help remove any loose dirt or debris that may be present on both sides of the glass.

Using a soft-bristled brush attachment, gently run your vacuum over all surfaces inside each pane. Be sure not to press too hard as this could damage delicate parts such as seals or spacers between panes.

If there are any stubborn spots that won’t come off with just a vacuuming, don’t worry! We’ll cover how to deal with those in later sections.

Clean the Inside of a Double Pane Window Without Drilling Holes

window cleaning equipments

Here’s how:.

First, start by cleaning the exterior of the windows as much as possible. Then open up both sashes and vacuum out any loose debris from between them.

Next, mix equal parts white vinegar and water in a spray bottle. Spray this solution onto a microfiber cloth or sponge and wipe down all surfaces on both panes of glass.

For stubborn stains or dirt buildup, use an eraser sponge (also known as melamine foam) to gently scrub away grime without damaging the glass surface.

Dry off all surfaces with another clean microfiber cloth until they are completely streak-free.

Drill Holes to Clean the Inside of a Double Pane Window

drill hole in window

This method is a bit more invasive but can be effective in removing stubborn dirt or moisture that has accumulated between the panes.

To begin with, you will need a power drill with a small glass-cutting bit and some plastic plugs. Start by drilling two holes on opposite corners of one of the panes.

Make sure that they are at least 3/16 inch in diameter so that air can flow freely through them.

Once you have drilled both holes, insert plastic plugs into each hole to prevent any debris from entering between the panes while cleaning. Then use an appropriate cleaning solution and spray it through one hole using a spray bottle until it reaches every corner of your windowpane.

Next, use another tool like an extendable squeegee or microfiber cloth attached to a long handle (depending on how deep your windows are) inserted through another hole for wiping off any dirt or grime present inside.

Afterward, remove both plugs carefully without damaging either pane before sealing up those tiny openings again using silicone caulk sealant for better insulation against drafts and moisture intrusion.

Cleaning the Glass Surfaces

cleaning home window

Start by spraying a generous amount of cleaning solution on one side of the glass and use a microfiber cloth or sponge to wipe away any dirt or grime. Be sure not to apply too much pressure as this can damage the delicate surface.

For stubborn stains, mix equal parts water and vinegar in a spray bottle and apply it directly onto the affected area. Let it sit for 5-10 minutes before wiping away with your cloth or sponge.

When cleaning double pane windows, avoid using abrasive materials such as steel wool or razor blades that can scratch or damage the surface. Also, steer clear of ammonia-based cleaners that can cause discoloration over time.

After you’ve cleaned both sides of each pane thoroughly, dry them off with another clean microfiber cloth to prevent streaks from forming on your newly cleaned windows.

Dealing With Mold and Mildew

Mold Off Window Sills

If you notice any signs of mold or mildew on your window panes, it’s essential to address the issue promptly to prevent further damage.

To clean mold and mildew from your double pane windows, start by mixing equal parts water and white vinegar in a spray bottle. Spray the solution onto the affected area generously, making sure that it covers all visible spots of mold or mildew.

Next, use a soft-bristled brush or sponge to scrub away at the stains gently. Be careful not to apply too much pressure as this could cause damage to your window panes.

Once you’ve removed all traces of mold or mildew from your double pane windows using this method, rinse them thoroughly with clean water before drying them off completely using a lint-free cloth.

Remember that prevention is always better than cure when dealing with issues like these. To avoid future problems caused by excess moisture buildup around your windowsills or frames:

  • Keep indoor humidity levels low
  • Ensure proper ventilation
  • Use dehumidifiers where necessary

Removing Hard Water Stains

vinegar and baking soda

These stains are caused by the buildup of minerals in the water, which can leave behind unsightly spots and streaks on your glass surfaces. Fortunately, there are several ways to remove hard water stains from your windows.

One effective method is to use a mixture of vinegar and baking soda. Simply mix equal parts white vinegar and baking soda into a paste, then apply it directly onto the stained areas with a soft cloth or sponge.

Let it sit for about 10-15 minutes before wiping away with another clean cloth.

Another option is to use lemon juice or citric acid mixed with warm water in equal parts as an alternative solution that works just as well.

Cleaning the Window Frame

clean screen window

The frame is an essential part of your double pane windows and requires proper maintenance to ensure its longevity. Dirt and grime can accumulate in corners, crevices, and tracks over time, making it challenging to clean.

To start cleaning the window frame:.

  1. Use a soft-bristled brush or vacuum cleaner attachment to remove any loose dirt or debris.
  2. Mix warm water with mild soap in a bucket.
  3. Dip a sponge into this solution and wring out excess water.
  4. Wipe down all parts of your window frames using gentle pressure.

Avoid using abrasive cleaners as they can scratch or damage your frames’ finish.

Once you’ve cleaned all parts of your window frames thoroughly, use another clean sponge dipped in plain water for rinsing off any remaining soap residue from them before drying them with a dry cloth.

Reassembling the Window Panes

home window tint install

Start by carefully placing one pane on top of another and aligning them correctly. Make sure that there is no dirt or debris between the two panes before putting them back together.

Next, apply a thin layer of silicone sealant around the perimeter of each pane where they meet in order to create an airtight seal. Be careful not to use too much as excess sealant can cause problems with condensation buildup.

After applying the silicone, gently press down on each corner of both panes until they are firmly seated together. Wipe away any excess silicone with a clean cloth and allow it to dry for at least 24 hours before reinstalling your window sash.

Sealing the Window Sash

window caulking

This will help prevent any moisture or dirt from entering and ensure that your windows remain clean for a longer time.

To seal the window sash, start by applying silicone caulk around all four sides of the frame where it meets with the wall. Use a caulking gun to apply an even layer of caulk along each edge, making sure not to leave any gaps.

Next, use a putty knife or scraper tool to smooth out and remove any excess caulk. This will create a tight seal between your double pane windows and their frames while also improving energy efficiency by preventing drafts from entering through gaps in seals.

Reinstalling the Window Sash

Unlock window Screen

This process is relatively simple and involves reversing the steps taken to remove it.

Firstly, ensure that all surfaces are dry before reassembling. Then carefully place one side of the sash into its corresponding track on either side of the frame.

Once in position, tilt up and push down gently until both sides click back into place.

Next, test that your window opens and closes smoothly without any resistance or wobbling. If everything looks good, secure any latches or locks as needed.

Give your newly cleaned windows a final inspection for streaks or smudges before enjoying their crystal-clear view once again!.


Can you clean in between double pane windows?

No, you cannot clean between double pane windows without breaking the seal and facing challenges in reassembling and resealing the panes properly.

Can you clean the inside of double pane glass?

Yes, you can clean the inside of double pane glass by drilling holes, inserting a desiccant packet to absorb moisture, and rinsing with rubbing alcohol to remove dirt.

How do you remove the haze from a double pane window?

To remove haze from a double pane window, drill small holes at the top and a corner at the bottom, then pour isopropyl alcohol into the holes or insert desiccant pellets to eliminate fog and condensation.

How do you clean the inside of a double glazed window?

To clean the inside of a double glazed window, gently vacuum the window frame, use a damp cloth to wipe away dirt, and clean the glass with a solution of four parts warm water, one part white vinegar, and a dash of dishwashing liquid, using a soft cloth and soft toothbrush for corners.

What is the most effective method for removing condensation between double pane windows?

The most effective method for removing condensation between double pane windows is by hiring a professional to either repair the seal, replace the window, or install a window defogging system.

Are there any specific tools or products recommended for cleaning the interior of double pane windows?

One recommended method for cleaning the interior of double pane windows is using a magnetic window cleaner specifically designed for double glazed windows.

What precautions should you take when attempting to clean the inside of a double pane window to avoid damage or voiding the warranty?

When cleaning the inside of a double-pane window, take precautions such as referring to the manufacturer’s guidelines to avoid damage or voiding the warranty.