Alberta winters are notoriously beautiful, but they also bring extreme freezing temperatures that put a massive strain on our homes. One of the most common and frustrating issues homeowners in Edmonton, St. Albert, and Sherwood Park face during the cold months is window condensation.
You wake up in the morning, and the bottom of your windows is covered in water droplets, or worse, a thick layer of frost and ice. Left ignored, this moisture drips down, damaging your wooden sills, peeling paint, and creating a perfect breeding ground for toxic black mold.
At FP Windows & Doors, we believe in helping local homeowners find cost-effective solutions. In this guide, we will break down exactly why your windows are sweating and how you can fix it before the deep freeze sets in.
Why Do Windows Sweat and Freeze in the Winter?
Window condensation is simple physics. It happens when warm, humid indoor air comes into contact with a cold surface — in this case, your window glass.
During an Alberta winter, the temperature drop outside makes the glass extremely cold. Inside, activities like cooking, showering, washing dishes, and even breathing release moisture into the air. When that warm moisture hits the freezing glass, it instantly turns into liquid water (condensation). If the temperature outside drops low enough (into the -20°C or -30°C range), that water quickly turns into ice.
The Big Red Flag: Condensation BETWEEN the Glass Panes
It is vital to distinguish where the moisture is located, as it tells you exactly what condition your windows are in:
- Condensation on the INSIDE of the glass (in your room): This is usually caused by high humidity levels inside your house and poor airflow.
- Condensation BETWEEN the two or three panes of glass: This means your window has a broken seal.
Modern residential windows use sealed double or triple-pane units filled with insulating gas (like Argon). When the seal around the edge of the glass unit fails over time due to weather shifts, the dry insulating gas escapes, and humid air seeps inside. Once moisture gets between the panes, the window loses its energy efficiency, becomes permanently foggy, and cannot be cleaned or wiped away manually.
How to Reduce Indoor Window Condensation
If the moisture is strictly on the inside surface of your room, you can lower it by managing your home’s humidity and improving air circulation:
- Run your exhaust fans: Always use bathroom fans during showers and kitchen range hoods while cooking, leaving them on for an extra 15–20 minutes afterward.
- Turn down your humidifier: If you have a whole-home furnace humidifier, turn it down or off when outdoor temperatures drop below -10°C.
- Circulate the air: Keep window blinds and drapes open during the day to allow warm air from your floor registers to sweep across the glass and dry up moisture.
Do I Need to Replace the Entire Window to Fix Foggy Glass?
Absolutely not! This is where many homeowners end up overpaying.
If your window frames (the PVC, wood, or aluminum structures) are still in good structural shape, you do not need to tear out the whole window and damage your drywall or exterior siding.
The smartest, most affordable solution is Glass Unit Replacement.
At FP Windows & Doors, we can remove the old, failed, or cracked glass unit from your existing frame and replace it with a brand-new, high-efficiency sealed glass unit.
Why Choose Glass Unit Replacement?
- Massive Cost Savings: Replacing just the glass costs a fraction of the price of a full window replacement.
- Restored Energy Efficiency: A new sealed unit stops drafts, eliminates internal fogging, and helps lower your monthly winter heating bills.
- Quick and Clean Installation: The process takes minimal time, preserves your original frames, and leaves absolutely no mess behind.
Restore Your Windows Before the Cold Hits
Don’t let foggy windows block your view or damage your home this winter. If you notice moisture trapped inside your window panes, or if your old glass just isn’t keeping the Alberta cold out anymore, our Edmonton-based team is here to help.
We specialize in supplying and professionally installing top-tier PVC windows, premium exterior doors, and high-quality replacement glass units engineered specifically for local climate conditions.
📞 Tired of dealing with foggy or icy windows? Contact FP Windows & Doors today to schedule your FREE, no-obligation estimate in the Edmonton area!
