Understanding Condensation Between Double Glazed Units: What Customers Need To Know

Window looking out to garden

Double glazed windows have become a popular choice for homeowners seeking improved insulation and energy efficiency. However, one common issue that can arise with these windows is condensation build-up between the glass panes. In this blog post, we’ll explore what causes condensation between double glazed units, its potential effects, and how customers can address this issue.

What Causes Condensation Between Double Glazed Units?

Condensation between double glazed units occurs when moisture from the air becomes trapped between the glass panes. This moisture can accumulate due to several factors, including:

1. Seal Failure: Over time, the seals around double glazed units may degrade, allowing moisture to seep into the space between the panes.

2. Poor Installation: Improper installation of double glazed windows can create gaps or inconsistencies in the seal, making it easier for moisture to infiltrate the unit.

3. Extreme Weather Conditions: Drastic changes in the temperature and humidity levels can exacerbate condensation issues, especially in regions with high humidity or severe weather

4. Age and Wear: As double glazed units age, the materials may deteriorate, compromising their ability to maintain a proper seal and prevent moisture ingress.

Potential Side Effects:

While condensation between double glazed units may seem like a minor inconvenience, it can have several potential effects, including:

1. Reduced Visibility: Condensation can obstruct the view through the window, making it difficult to see outside and diminishing natural light indoors.

2. Aesthetic Concerns: Water droplets trapped between the glass panes can leave behind unsightly streaks and stains, detracting from the appearance of the window

3. Risk of Mould and Mildew: Excess moisture trapped within the double glazed unit creates a conducive environment for mould and mildew growth, which can pose health risk and damage the window frame.

4. Decreased Energy Efficiency: Condensation between double glazed units may indicate a compromised seal, leading to reduced energy efficiency and higher heating and cooling costs.

Addressing Condensation Issues:

If you notice condensation build-up between your double glazed units, its essential to address the issue promptly. Here are some steps you can take:

1. Check the seals: If you able to, inspect the seals around your double glazed windows for damage or wear. If you notice any gaps or inconsistencies, then please get in touch to arrange for a repair or replacement.

2. Improve Ventilation: Proper ventilation can help reduce humidity levels indoors, minimising the likelihood of condensation forming on your windows. Ensure that your home is adequately ventilated, especially in areas prone to moisture accumulation. (Look out for a future blog about ventilation)

3. Upgrading to Energy-Efficient Windows: If condensation issues persist despite every effort to address the issue, you may need to consider upgrading the window as a last resort.

4. Consult a Professional: If you’re unsure how to address condensation between your double glazed units, please get in contact with us, either via the contact form, email address or telephone number all found on the website and we will be more then happy to visit and give you expert advice and assistance.

In conclusion, condensation build-up between double glazed units is a common issue that can affect the performance and aesthetics of your windows. By understanding the causes and potential effects of condensation, as well as implementing appropriate measures to address the issue, customers can ensure their double glazed windows remain functional, efficient and visually appealing for years to come.


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