Understanding Misted Windows
It’s a common question we hear from homeowners: “Do I need to replace the whole window, frame and all, if the glass is misted up?” The good news is: usually, no, you don’t.
Why Double Glazing Mists Up
When you see condensation or fogging between the panes of your double-glazed window, it means the sealed unit has failed. This usually happens because the airtight seal around the glass has broken, allowing moisture to enter. This might be caused by:
- Age and wear over time
- Exposure to extreme temperatures
- Poor installation
- Settlement of your home causing frame movement
Once the seal has failed, the window has lost its insulating properties and should be addressed to avoid heat loss and worsening appearance.
Repair vs. Full Replacement
When You Only Need to Replace the Glass
In most cases, you do not need to replace the entire window, just the double-glazed unit (also known as the sealed unit or glass unit). If your frames are still in good condition — whether uPVC, aluminium or wooden — replacing just the glass is the practical and cost-effective choice.
When a Full Window Replacement is Needed
A full window replacement might be a better idea if:
- Your window frame is damaged, warped or rotting
- There’s ongoing draughtiness or leaks from the frame
- You’re upgrading the entire window for energy rating or style
Our expert surveyors can help you make that call, honestly and without pressure.
What Does Glass-Only Replacement Involve?
Replacing the glass only is a non-disruptive process that:
- Involves removing the failed sealed unit
- Does not disturb surrounding frames or walls
- Can usually be done in under an hour per window
At Get My Windows Fixed, our local engineers measure, manufacture and install the exact size, style and type of unit to match your existing one — or upgrade it, if you prefer.
What Will It Cost?
Prices depend on the size and type of glass, but glass-only replacement is significantly more affordable than full window replacement. Typical costs start from around £75 to £150 per sealed unit (installed). Larger or special glazing (like toughened or patterned glass) will be priced accordingly. We offer free surveys and no-obligation quotes.
How We Can Help
At Get My Windows Fixed, we specialise in replacing failed double-glazed units without touching your frames. We’re honest, quick, and nationwide — and we’re more than happy to assess your windows and explain whether a simple glass swap or a full window replacement is the best option for you.