Solving Seal Failure represents one of the most common challenges we see for homeowners living in the unique climate of Calgary. We understand that your windows act as a vital barrier against the extreme temperature swings and heavy winds that define our local weather. When you notice a hazy or cloudy appearance between your double or triple-pane glass, it usually indicates that the airtight seal has finally given way. This moisture trapped inside the unit does more than just ruin your view; it signals that your window has lost its ability to insulate your home effectively. Our team observes that the constant cycle of freezing winters and warm Chinook winds puts immense stress on the materials holding your glass together. We want to help you understand why this happens and how we can restore the clarity and efficiency of your windows.
The Mechanics of an Insulated Glass Unit
Modern residential windows consist of two or more sheets of glass separated by a spacer bar and a hermetically sealed pocket of air or inert gas. We find that this gas, often argon, provides the thermal resistance needed to keep your heat inside during a cold Alberta night. The spacer bar usually contains tiny desiccant beads designed to absorb small amounts of moisture that might find their way in over time. However, when the primary and secondary seals around the perimeter of the glass fail, the desiccant becomes overwhelmed by the outside humidity. Consequently, the moisture condenses into visible fog, streaks, or even puddles inside the glass unit itself. Our team focuses on identifying these failures early to prevent further damage to your window frames or interior walls.
Why Calgary Weather Accelerates Seal Failure
Calgary is famous for its dramatic temperature changes, where the mercury can jump twenty degrees in just a few hours during a Chinook. We see that this rapid heating and cooling causes the glass and the air between the panes to expand and contract significantly. This physical movement, known as thermal pumping, puts constant pressure on the flexible sealant around the edge of the unit. Over many years, this relentless stretching and squishing can create microscopic cracks or gaps in the seal. Furthermore, the high altitude and intense sun exposure in our region can cause the sealant to become brittle over time. We emphasize that these environmental factors make regular inspections of your home’s exterior glass even more important.
Identifying the Signs of a Failed Seal
You might not notice a broken seal right away if the weather is dry or if the failure is in its very early stages. We often suggest looking for condensation that appears and disappears depending on the time of day or the sunlight hitting the glass. If you try to wipe away the fog and realize it is on the inside of the unit, you have confirmed a seal issue. Additionally, you may notice that the room feels colder than usual or that your energy bills have started to climb without a clear reason. Our team also looks for mineral deposits or white “snowflakes” on the inner glass surfaces, which are left behind when trapped water evaporates. These visual cues are reliable indicators that the insulated glass unit is no longer performing its job.
Restoring Clarity and Energy Efficiency
Many people worry that foggy glass means they have to replace the entire window frame and trim, which can be very expensive. We take pride in offering a more targeted approach by replacing just the failed insulated glass unit while keeping your existing frames intact. This method restores the clear view and the original R-value of the window at a fraction of the cost of a full replacement. Our team ensures that the new glass unit features high-quality secondary seals and modern spacers that are designed to withstand the Calgary climate. We believe that Best Glass Pro near you should provide honest advice on whether a repair or a full replacement is the most logical choice for your budget. If you are tired of looking through cloudy glass, please Contact Us to discuss a professional solution for your home.
FAQ
Can I just drill a hole in the glass to let the moisture out?
While some “defogging” services suggest drilling small holes to vent the moisture, we do not recommend this as a permanent fix. Drilling holes does not restore the insulating gas or fix the broken seal, so your window will still be less efficient than it was designed to be. The only way to truly solve the problem and bring back the insulation is to replace the sealed glass unit.
How long do window seals usually last in Calgary?
In our experience, high-quality window seals typically last between fifteen and twenty-five years, depending on the orientation of the house and the quality of the original installation. Windows on the south and west sides of a home often fail sooner because they deal with more intense sun and heat. Regular maintenance of the caulking around your frames can help extend the life of your seals.
Does a foggy window cause mold growth?
Persistent moisture between the glass panes usually stays contained within the unit, but if the seal is completely gone, water can eventually leak into the window frame. If your frames are made of wood, this moisture can lead to rot and mold growth over time. Replacing the failed unit early is the best way to prevent water damage from spreading to the structural parts of your home.