Understanding Blown Window Seals: Causes, Identification, and Solutions

As a homeowner, it’s important to be aware of common issues that can arise with your windows. One of these issues is a blown window seal. In this blog post, we will discuss what a blown seal is, how it can happen, and what homeowners should look for when identifying blown seals. We will also explore the use of gases like argon in window construction and highlight the importance of airtightness in maximizing energy efficiency.

What is a blown window seal?
A blown window seal refers to a situation where the seal between the glass panes of a window becomes compromised, allowing air and moisture to enter the space between the panes. This can result in foggy or hazy appearance within the window, which is caused by condensation and debris accumulating between the layers of glass.

Causes of blown window seals:
Blown window seals can occur due to a variety of factors. Some common causes include extreme temperature fluctuations, age and wear of the window, and improper installation. Over time, these factors can weaken the seal, leading to its failure and the subsequent entry of air and moisture.


Identifying blown window seals:
Identifying a blown window seal is relatively straightforward. Look for signs of condensation or fogging between the glass panes. This is often more noticeable during cold or humid weather conditions. Additionally, keep an eye out for any debris or residue trapped between the layers of glass. Other ways to identify are bronze or purple dots on the glass, which are generally easier to see from the home's exterior. Lines, silver, bronze, or purple running horizontally or vertically on the glass, bronzing on the glass, or the entire pane looking purple. These visual cues indicate a blown seal and should prompt further inspection.

The role of gas-filled windows:
Many modern windows are constructed with an airtight space between the glass panes, filled with gases like argon. This gas acts as an insulator, reducing heat transfer between the interior and exterior of the home. By minimizing heat loss or gain, gas-filled windows contribute to improved energy efficiency and reduced energy costs.

The importance of airtightness:
Airtight windows are crucial for maintaining optimal energy efficiency in your home. When a window seal is blown, the airtightness is compromised, allowing drafts, moisture, and exterior temperatures to infiltrate your living space. This loss of airtightness can significantly impact your home's energy efficiency, leading to increased energy consumption and higher monthly bills.

The impact on energy efficiency:
The adverse effects of a blown window seal on energy efficiency should not be underestimated. Imagine warm air escaping during the winter or cool air seeping out in summer. This constant exchange of air can result in substantial energy loss. Studies have shown that a single-blown window seal can account for up to 25% of a home's heat loss, significantly increasing energy bills.

Prevention and solutions:
To prevent blown window seals from happening, homeowners can take several proactive measures. Regularly inspecting windows for signs of wear and tear, ensuring proper window installation, and maintaining consistent indoor humidity levels are all effective preventive steps. If a blown window seal does occur, it is recommended to contact a professional window repair company promptly. They can assess the situation and provide pricing for replacing the affected window.

It is crucial for homeowners to understand what a blown window seal is, how to identify it, and the importance of airtightness and energy efficiency. By being vigilant and taking preventive measures, homeowners can ensure their windows remain in optimal condition, maximizing energy efficiency and reducing unnecessary energy costs. Remember, a small investment in window maintenance today can lead to significant savings in the long run.
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A+ Window Cleaning recommends calling Reed at RC Glass Works on 512 960 9427