Condensation on double glazing can be frustrating—clouding your windows, reducing visibility, and possibly leading to damp or mould. Whether the moisture is inside, outside, or between the panes, the cause (and solution) is different.
Here’s how to identify the type of condensation and how to remove or prevent it effectively.
🌫️ Types of Condensation on Double Glazing
1. Condensation on the Inside (Room Side)
- Most common in winter
- Caused by high indoor humidity and cold window surfaces
2. Condensation on the Outside
- Usually seen in the morning on well-insulated windows
- Caused by cool outdoor temperatures and warm air inside
- Not a fault—actually a sign your windows are well insulated!
3. Condensation Between the Panes (Inside the Sealed Unit)
- Indicates the sealed unit has failed
- Moisture has entered the space between the two panes
- Glass appears permanently misty or foggy
✅ Solutions Based on Type
🔸 1. Condensation on the Inside
How to Remove:
- Wipe it with a dry microfibre cloth or squeegee
- Use a dehumidifier to reduce indoor moisture
- Open windows or use trickle vents to improve ventilation
- Use kitchen/bathroom extractor fans when cooking or showering
Prevention Tips:
- Avoid drying clothes indoors
- Keep lids on boiling pots
- Maintain a steady indoor temperature
🔸 2. Condensation on the Outside
How to Remove:
- Usually goes away on its own when the sun warms the glass
- No action needed
Prevention:
- You can fit hydrophobic glass coatings or use anti-condensation sprays, but this is mostly cosmetic
🔸 3. Condensation Between the Panes (Sealed Unit Failure)
How to Remove:
This type can’t be wiped away—you’ll need to repair or replace the glass unit.
Your Options:
- Replace the sealed unit (not the whole window frame)
- Contact a local glazing company
- Often cheaper than full window replacement
- Defogging services
- Some companies drill small holes and remove moisture using vacuum and drying agents
- Not always a long-term fix
- Check for warranty
- If your windows are under 10-year guarantee, the repair may be covered
🧠 Bonus Tips for Reducing Condensation Overall
- Keep air circulating by slightly opening windows or using fans
- Add houseplants that reduce humidity (like peace lilies or ferns)
- Use window insulation film in winter to keep internal surfaces warmer
- Maintain heating at a consistent low level in cold weather
Summary Table
| Location of Condensation | Cause | Solution |
|---|---|---|
| Inside pane (room side) | High indoor humidity | Ventilation, dehumidifiers, wipe away |
| Outside pane (exterior) | Cold external temps | No fix needed—normal occurrence |
| Between panes (inside unit) | Failed seal / unit damage | Replace sealed unit or get defogging service |
Conclusion
To remove condensation from double glazing:
- Identify where the moisture is (inside, outside, or between panes)
- Use the right method: improve ventilation, wipe it away, or replace the unit
- Long-term prevention focuses on controlling humidity and maintaining your windows
Proper action now will keep your home clear, dry, and energy-efficient.
Also Check:
• How Can I Get Rid of Moss on Tarmac?
• How Can I Get Rid of Super Glue Off My Glasses Lens?
• How Can I Hang a Wreath on a uPVC Door?
• How Can I Renew My CSCS Card?
Share this content:
