How to Remove Moisture From Double-Pane Windows

Double-pane windows, also known as insulated glass units (IGUs), are designed to reduce heat transfer and improve energy efficiency. They consist of two panes of glass separated by a spacer filled with a desiccant to absorb moisture and maintain a dry environment. However, over time, the desiccant may become saturated, leading to condensation or fogging between the panes. Here's how you can remove moisture from double-pane windows:

1. Check the Warranty:

- Before attempting any DIY solutions, check if your windows are still under warranty. If so, contact the manufacturer or installer to inquire about repair or replacement options.

2. Inspect the Window Seal:

- Examine the seals around the window edges for any cracks or damage that could allow moisture to enter. Repair any damaged seals using appropriate weather-resistant sealant.

3. Use Desiccant Packs:

- Place small packets of silica gel or other moisture-absorbing desiccant inside the window frames. These packs can help draw out moisture from the air.

4. Drill a Small Hole:

- In extreme cases, you may need to drill a small hole in the bottom corner of the window frame to allow moisture to escape. Drill the hole at an angle to prevent water from pooling.

5. Install a Breather Vent:

- Breather vents are designed to allow moisture to escape while keeping the window sealed. Install a vent in the bottom corner of the window frame and cover it with a breathable membrane.

6. Replace the Desiccant:

- If the moisture problem persists, you may need to replace the desiccant between the glass panes. This is a job best left to professionals to ensure the window remains airtight.

7. Contact a Professional:

- If the fogging or condensation is severe or if you are uncomfortable with DIY methods, contact a professional window repair or replacement service. They can determine the best solution and ensure the windows are properly sealed.

Remember that addressing moisture problems in double-pane windows is crucial to maintain energy efficiency and prevent further damage to the window unit. If left unattended, excessive moisture can lead to mold growth and deterioration of the window frame and glass.