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Blown Units

Blown Sealed Unit Example

What is a blown unit in double/triple glazing?

A blown unit in double or triple glazing refers to a situation where one or more of the sealed glass units within the window or door system has developed a leak, allowing air or moisture to penetrate the space between the panes of glass. Double and triple glazing typically consist of two or three panes of glass with a sealed airspace in between. This airspace is often filled with a gas like argon or krypton to improve insulation.

When the seal around one of the glass units is compromised, it can lead to several issues, including:

  • Condensation

  • Reduced Insulation

  • Aesthetic Issues

  • UV Damage

Blown units are a common issue in older double or triple glazed windows where the seals have deteriorated over time.

Should I get a blown window replaced?

Whether or not you should get a blown unit replaced in your double or triple glazing depends on the extent of the problem and your specific circumstances. Here are some factors to consider:

Visibility and Aesthetic Concerns: If the blown unit results in a foggy or cloudy appearance that obstructs your view and reduces the aesthetic appeal of your window, you might want to consider replacement for improved clarity and appearance.

Energy Efficiency: Blown units reduce the insulating properties of the window, potentially leading to drafts and higher energy bills. If maintaining energy efficiency is a priority, replacement may be beneficial.

Age and Condition: The age and overall condition of your windows matter. If your windows are relatively new and in good condition, replacing the blown unit might be a viable option. 

Cost: Replacement costs can vary, and it's essential to weigh the cost of replacing the blown unit against the benefits it will provide in terms of aesthetics and energy efficiency.

Blown unit before
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Do you replace Georgian bars or leaded designs?

Yes, we offer custom solutions for seamlessly incorporating Georgian bars and leaded designs into your existing sealed units at home. Our skilled craftsmen specialise in crafting window features that perfectly match your current design. Whether you're seeking the timeless elegance of Georgian bars or the intricate beauty of leaded patterns, we ensure a flawless integration that complements your home's aesthetics. With our expertise, you can enjoy the added charm and character of these designs while maintaining the cohesive look of your sealed units.

How much does it cost to replace a unit?

Opting for sealed unit replacement can be a remarkably cost-effective solution, often more budget-friendly than one might assume. It's a smart way to enhance energy efficiency and aesthetics in your home without breaking the bank. You'll be pleasantly surprised at how this upgrade can breathe new life into your windows and doors, providing better insulation and a fresher look, all at a fraction of the cost of a full window replacement. Don't let budget concerns hold you back from improving your living space – sealed unit replacement is an affordable option with numerous benefits.

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If you would like a free no obligation quote, contact us today!

The Process


Get in Touch

Give us a call or drop us a message and one of our team will be glad to assist.


Site Survey

Our service engineers will survey your property and recommend the best & most cost effective way to proceed.


Free Quote

We will provide you a free no obligation quote. No pressure from us.


Place Order

We will order all the materials and be in touch to arrange a day that suits you.


Fitting Day

Our team will always complete the work with minimal disruption to you.

Get in Touch

If you would like to arrange an appointment please go over to our contact us page, leave your details and one of our team will get back to you.
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