Cost of Replacing Misted Double Glazing Units: What You Need to Know
If you've noticed foggy, moisture-filled windows in your home, you're not alone. Misted double glazing is a common issue for homeowners, caused when the seal between the panes fails and moisture seeps inside. While it can be unsightly and reduce your home's energy efficiency, the good news is that it’s fixable — often without needing to replace the entire window. But how much does it cost? In this article, we’ll explore the cost of replacing misted double glazing units, what affects the price, and how you can get the best value for your money.
Misted Double Glazing Unit
Why Double Glazing Units Mist Up
Before diving into costs, it's useful to understand why double glazing units mist up. Over time, the seals that keep the two panes of glass airtight can deteriorate due to weather exposure, age, or poor installation. Once the seal is compromised, moisture enters the space between the panes, creating a misted or foggy appearance that cleaning won’t fix.
Replacing just the misted unit — rather than the whole window — is often the most cost-effective solution.
How Much Does It Cost to Replace a Misted Double Glazing Unit?
The cost of replacing misted double glazing units varies depending on several factors:
Size of the glass: Larger units naturally cost more to replace than smaller ones.
Type of glass: Special features like toughened glass, low-emissivity (Low-E) coatings, or decorative elements will increase the cost.
Access: Windows on higher floors or difficult-to-reach locations may require additional labour costs or if your windows are externally glazed, safety equipment such as scaffolding may be needed.
Location: Prices can vary significantly across different regions in the UK.
On average, you can expect to pay between £60 and £150 per unit for a standard size replacement. Larger or more specialised units might cost between £150 and £300. These prices typically include supply, fitting, and disposal of the old unit.
Breaking Down the Costs
Here’s a simple breakdown of what impacts the cost of replacing misted double glazing units:
Factor
Typical Price Range
Small standard unit
£60 - £90
Medium standard unit
£80 - £120
Large standard unit
£120 - £200
Is It Cheaper to Replace the Glass or the Entire Window?
In most cases, replacing just the misted double glazing unit is far cheaper than replacing the whole window frame. Complete window replacements can range from £800 to £1,500 or more per window, depending on materials and features. Therefore, unless the frames themselves are damaged, replacing only the glass makes much more sense economically.
Can You Claim on Insurance?
Depending on your home insurance policy, you might be able to claim the cost of replacing misted double glazing units. However, many insurers consider misted windows as a wear-and-tear issue, which may not be covered. It's worth checking your policy or speaking with your provider before arranging a replacement.
How to Find a Reliable Installer
Choosing a reputable glazing company is crucial to ensuring a quality replacement at a fair price. Look for installers who:
Offer free, no-obligation quotes
Provide a guarantee on new double glazing units
Have a professional looking website
Have a landline, not just a mobile number
Getting several quotes can help you find the best deal without compromising on quality.
Conclusion
The cost of replacing misted double glazing units is a small price to pay for restoring the clarity, insulation, and appearance of your windows. By replacing only the glass, you save significantly compared to full window replacement. Savings typically range from £500 to £1,000 per window, depending on size and specifications. To get the best value, use trusted local glaziers such as Star Glazing™ and ask about warranties on your new units.