Back to KnowledgeBase Home
If you have double-glazed windows, you’ve probably noticed that sometimes they develop foggy or misty areas between the glass panes. This is usually caused by moisture getting inside the sealed unit, which can be frustrating and affect the appearance and performance of your windows. A common question homeowners have is: Can the moisture be removed without replacing the entire glass unit? But before you start dreaming of clear views and perfect insulation, let’s explore this topic.
In some cases, companies claim they can remove the moisture from within the sealed glass unit, restoring clarity without the need for a costly replacement. These methods typically involve specialised vacuum and drying techniques designed to evacuate the trapped moisture and sometimes seal the unit again.
The process often includes the following steps:
1) Removal of the sealed unit: The glass is taken out of the frame.
2) Drying and vacuum processes: The moisture is extracted using a vacuum chamber, and the air within the unit is dried.
3) Re-sealing the hole: The unit is then re-sealed to fill the hole.
Unfortunately, no, these procedures are only temporary patches at best. They attempt to vacuum out the moisture and reseal the unit, but if the original seal has failed—which is why moisture got in—the problem is likely to return. Even if the process seems successful initially, the seal will continue to degrade over time, causing fogging to reappear sooner rather than later
The Risks and Limitations
Attempting to remove moisture from a sealed unit isn’t just a quick fix; it can actually do more harm than good:
1) Short-term solution, long-term disappointment: The moisture may be temporarily removed, but the seal remains broken, leading to future fogging and potentially worse issues.
2)Potential damage: Improper handling or unskilled attempts can damage the glass or compromise the structural integrity of the unit, making replacement inevitable anyway.
3)False economy: Paying for a moisture removal service could end up costing more over time when you realize the problem persists or worsens.
Given the limitations and risks of moisture removal, most experts agree that replacing the glass unit is the smarter, more reliable long-term solution. A new sealed unit will restore clarity, improve insulation, and prevent future moisture ingress—saving you money, hassle, and frustration in the long run. Furthermore, when you choose The Window Doctor, your glass unit comes with a 10 Year warranty!
Don’t fall for quick fixes that only mask the problem temporarily. If your double-glazed windows are misted or foggy, it’s best to invest in replacement units rather than risking ineffective repairs. Break the cycle of temporary fixes—choose a permanent solution that will keep your windows clear and functioning properly for years to come.
Replacing the glass units only is cost-effective, quick, and when you use The Window Doctor, Hassle free!
Need an expert? Book a FREE survey on our website or call the team to discuss! We look forward to helping you soon, and remember - Why Replace... We Repair...
