How to fix water trapped in a double-glazed window?

Author: Dr. Noelia Goldner  |  Last update: Sunday, November 23, 2025

Yes, it is possible to remove condensation inside double glazing via several methods, such as inserting towels soaked in vinegar between the panes, using a heat gun, replacing any weatherstripping or sealant around the window, or using dehumidifying products (desiccants).

How to get water out of double-glazed windows?

You can reduce the effect of the condensed water by simply running a hair dryer at the place where the condensation is. You may need to duct tape it to a ladder or something as it takes awhile for the water to disappear. This is at best a temporary fix as the seal on the double pane glass has failed.

How do you get moisture out of a double pane window?

Space heaters and hair dryers are products that are in almost any home and these can be used to help clear the condensation from your double pane windows. Place the space heater or hairdryer by the window and leave it on. This will absorb all the moisture in between the windows.

Can misted double-glazed windows be repaired?

Some companies can repair misted double glazing by removing any moisture and resealing the window.

Can cloudy double pane windows be repaired?

No, it cannot be repaired but you don't necessarily have to replace the entire window. The cloudiness means that the seal between the double paned glass has broken allowing for the dry inert gas (or vacuum) to escape and for moisture laden air to seep in between the 2 panes.

Double Glazing Unit Condensation / Blown DIY Repair.

Can you fix cloudy double-glazed windows?

If the window frames are still in good condition, you can often just replace the glass units to resolve the issue. Replacing the double glazed unit can restore the window's functionality and eliminate the condensation problem by reintroducing proper sealing and insulation.

Can a double-pane window be resealed?

When a seal is faulty, the double glazing loses its airtight ability and the argon gas is lost. This can in some cases be remedied, with resealing of your double-glazed windows a possibility.

How do you get the cloudiness out of a double pane window?

Drill two small holes near the bottom of the pane, and then use a cleaning solution or a dehumidifier to remove the moisture. After the window fog has been eliminated, spray an anti-fog solution inside the glass and add small vents before sealing it with clear silicone caulk.

Can double glazed windows be resealed?

Resealing double glazing is invariably a job best left to a professional window installer. Besides resealing the window, they'll also rectify the unsightly condensation build-up between the two panes of glass. However, even professional window resealing is unlikely to be as effective as a window replacement.

How much does it cost to Reglaze a window?

Reglazing: The putty between the window panes and the frame can break down over time, compromising the window's weatherproofing. Replacing the putty is called reglazing and typically costs $250–$500 per window.

How to fix a double glazed window that has condensation?

Yes, it is possible to remove condensation inside double glazing via several methods, such as inserting towels soaked in vinegar between the panes, using a heat gun, replacing any weatherstripping or sealant around the window, or using dehumidifying products (desiccants).

Is there a way to clean in between double-pane windows?

Most often, you need a professional to clean up the inside of a double pane window, but you may be able to temporarily clean inside your windows by drilling and pouring in isopropyl alcohol. This is a risky solution though, and it's best to work with professionals if your double-pane window seal fails.

Will a hair dryer remove condensation between glass panes?

Use a hair dryer or heat gun on the window panes from the outside. This will help to absorb any excess moisture that has been trapped between the two glass layers of your double pane windows and reduce condensation build-up.

Why is moisture trapped in my double glazing?

Condensation between the panes of your double-glazed window means the seal has failed. You can either repair the window, or replace it entirely. Repairing it is the cheaper option in the short term, but you should consider the expected life cycle of the window, and think about whether it's worth replacing instead.

Can you repair a double-pane window?

If the glass is not shattered, repairing a pane of glass in a double-pane window is just a short-term solution that typically involves an adhesive placed within the cracks. The adhesive is either a type of putty or special tape that is used to prevent the window from cracking further or shattering completely.

How to tell if double glazing has failed?

Clear signs of double glazing failure include:
  1. You can feel Draughts Around Your Windows.
  2. There is visible damage to the window frame such as cracks and dents.
  3. Condensation forming on the interior of your window or between panes.
  4. Chips in the glass itself.
  5. Water is leaking through the frame.

How to fix leaking double glazed windows?

Fixing a leaky window frame is often a simple matter of resealing the window. This means stripping away the existing sealant and applying a new layer. Sealant guns are inexpensive, and make the job as easy as pointing the nozzle into the gap and squeezing the trigger.

How much does it cost to repair a double pane window seal?

Broken window seals also negate the energy-saving features of double or triple-pane windows. Broken window seal repair costs can range from $40 to $120 per seal, depending on the size, condition, and finish options.

Can I reseal my windows myself?

Yes, you can reseal windows yourself, but it's a complex task best left to professionals. DIY resealing might not guarantee the functionality of your double-glazed windows, so for optimal results, hiring a window specialist is highly recommended.

How to fix fogged up double-pane windows?

Presently, there are two different ways to deal with condensation: either replace the window (you can usually replace only the glass unit and not the whole window) or hire a local company to drill holes in the outer pane, clean the windows from the inside and install one-way air vents to help prevent future ...

How do you remove cloudy film from window panes?

Vinegar Solution Method
  1. Mix equal parts white vinegar and distilled water in a spray bottle.
  2. Spray the solution onto the cloudy glass surface.
  3. Let it sit for a few minutes to loosen deposits.
  4. Wipe the glass with a microfiber cloth in circular motions.
  5. For stubborn stains, repeat the process or use undiluted vinegar.

Why is my double glazed window cloudy?

Over time, the seals on your windows may break down, stopping the inner gap between your panes from being airtight. Once the insulating properties are lost, moisture gathers and creates condensation that cannot be removed, causing the windows to look misted or cloudy. It is often referred to as a 'blown window'.

What is the life expectancy of a double-pane window?

The typical lifespan for a double-pane window is 20-25 years. But that depends on the quality of the window and the outside environment. A lower-quality window may start to fail after 10 years, and harsh weather conditions can take a few years off of a window's life.

How to fix condensation between double-glazed windows?

Unfortunately, once condensation forms between double-glazed windows, the only long-term solution is to replace the sealed unit. While temporary fixes like using a dehumidifier may help, replacing the affected window pane is the most effective way to resolve the issue and restore your window's efficiency.

How to clean a double-pane window on the inside?

Unfortunately, cleaning the inside of double-pane windows is not recommended. The space between the two glass panes is sealed and filled with insulating gas, which helps with insulation. Opening the window or attempting to clean the inside can compromise the seal and lead to moisture or condensation buildup.

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