Your windows are one of the most important components of your home's envelope. They provide natural light, ventilation, and insulation. But like all building materials, windows don't last forever. Here are seven clear signs that your windows may be failing.
1. Fog or Condensation Between Panes
This is the most obvious sign of a failed window seal. When you see moisture, fog, or a milky haze between the panes of a double or triple-pane window, the hermetic seal has broken. This means the insulating gas has escaped and moisture has entered.
2. Drafts Near Windows
If you feel cold air coming in around your windows during winter, or warm air during summer, the weatherstripping or seals may have deteriorated. Hold a candle near the window edges — if the flame flickers, you have air infiltration.
3. Difficulty Opening or Closing
Windows that stick, jam, or won't stay open may have warped frames, broken hardware, or foundation settling issues. This affects both functionality and emergency egress.
4. Visible Damage to Frames
Look for peeling paint, rotting wood, warping, or water stains on window frames. These indicate moisture damage that will only worsen over time.
5. Increased Energy Bills
If your heating and cooling costs have been climbing without explanation, failing windows could be the culprit. Windows account for 25-30% of residential heating and cooling energy use.
6. Excessive Outside Noise
Modern double-pane windows provide significant sound insulation. If you're hearing more outside noise than usual, the seal may have failed, reducing the window's acoustic performance.
7. Water Leaks During Rain
Water intrusion around windows during storms indicates failed flashing, deteriorated caulking, or damaged frames. This can lead to mold growth and structural damage if not addressed.
What to Do Next
If you're experiencing any of these signs, contact Apex Windows at (214) 263-3008 for a free assessment. Many window issues can be resolved with glass-only replacement rather than full window replacement, saving you significant money.