Can Condensation Between Window Panes Be Fixed?
If you’ve noticed mist, fog or moisture trapped inside your double-glazed window, you’re probably wondering if it can be fixed – or if replacement is the only option. The good news is: yes, condensation between panes can be fixed, and often without replacing the entire window.
Why condensation forms between panes
Double-glazed windows have two panes of glass with a sealed gap in between, often filled with a gas like argon for better insulation. When this seal fails – due to age, weathering or damage – moisture gets in. Once that happens, the gas escapes, and condensation or fog builds up inside the unit.
Unfortunately, you can’t just wipe it away – the condensation is sealed inside the unit, between the panes.
Repair vs. full replacement: what’s the difference?
Homeowners often assume a foggy window means the whole frame and unit must be removed. Not always true. Here’s what to know:
- Repair (glass-only unit replacement): If the frame is still in good condition, we can simply swap out the failed double-glazed unit for a new one – keeping the frame.
- Full replacement (including frame): Needed only if the frame is damaged, warped, or very old and inefficient. This is more costly and time-consuming.
In most cases, especially with uPVC or aluminium windows in otherwise good condition, repairing the glass unit is faster, cheaper, and just as effective.
What are your options?
Once condensation is inside the glass, there are two main routes:
- Replace just the double-glazed sealed unit. This restores clarity, insulation and prevents further misting. It’s a like-for-like swap – fast and cost-effective.
- Upgrade to energy-efficient glass. If you’re already replacing, why not consider low-e or A-rated glass to boost your home’s warmth and reduce energy bills?
How much does it cost?
At Get My Windows Fixed, replacing a misted glass unit is typically between £75–£150 per window, depending on size, shape and type of glass. This is a fraction of the cost of full window replacement, which can range from £400–£800 or more.
We always provide a free quote – no callout charge, no obligation.
How long does it take?
Once measured, most units are custom-made and fitted within 7–10 working days. The fitting itself usually takes less than an hour. No mess, no major disruption to your home.
DIY checks you can do
If you’re unsure whether condensation is inside or just on the surface, here’s how to tell:
- Touch the misting area. If it’s between panes, you won’t be able to wipe it off from either side.
- Look for other signs of failed seals, like water pooling inside or distorted views through the glass.
Ready to clear up that cloudy window?
You don’t need to put up with misty windows. Replacing the affected glass unit is usually simple, affordable and restores your window to full working order – without replacing the whole thing.
At Get My Windows Fixed, we specialise in nationwide, glass-only replacements. Every repair is completed by trusted local engineers, and we’ll give you honest, upfront advice about whether a fix or full replacement is best for your home.
Book your free quote today and see the difference clear windows can make!