What is Window Seal Failure?
Windows with insulated glass units (IGUs) are designed to provide insulation by trapping air or gas between panes. The edge of the glass is sealed to prevent moisture from entering. Window seal failure occurs when this protective seal breaks, allowing air and moisture to seep in.
Once a seal fails, condensation, fogging, and visible streaks may appear between panes. This not only affects the window’s appearance but also reduces energy efficiency.
Top Causes of Window Seal Failure
- Extreme Weather Conditions – Maryland’s hot summers and cold winters cause expansion and contraction, stressing seals.
- Poor Installation – Incorrectly installed windows put pressure on seals, leading to early failure.
- Age and Wear – Over 15–20 years, even high-quality seals deteriorate naturally.
- Water Exposure – Excessive moisture or drainage issues near windows accelerates seal breakdown.
- Pressure Changes – High winds or rapid temperature shifts can cause seal gaps.
Signs You Have Window Seal Failure
- Fog or Condensation Between Panes – A cloudy or hazy appearance inside the glass.
- Drafts & Temperature Fluctuations – Rooms may feel colder or warmer near failed windows.
- Distorted Views – Glass may appear wavy or streaky.
- Higher Energy Bills – HVAC works harder due to poor insulation.
- Mold Growth – Trapped moisture encourages mold, creating health risks.
Repair vs. Replacement – Which is Best?
- Defogging Services – Temporary fix that removes moisture but doesn’t restore full insulation.
- Seal Repair Kits – DIY kits exist but often provide only short-term relief.
- Glass Replacement – Replacing only the insulated glass unit while keeping the frame.
- Full Window Replacement – Best for older homes or when multiple windows fail.
💡 Tip: If multiple windows show failure, replacement is usually more cost-effective than repeated repairs.
Preventing Window Seal Failure
- Choose professional installation for new windows.
- Maintain proper drainage around your home.
- Inspect caulking and weather stripping regularly.
- Consider UV-protective coatings to reduce heat damage.
FAQs on Window Seal Failure
Q: Can I fix a broken window seal myself?
A: Minor condensation can sometimes be managed, but permanent repair usually requires professional service.
Q: How much does window seal repair cost in Maryland?
A: Costs vary, but typically range from $150–$400 per window, depending on size and damage.
Q: Is window seal failure covered by warranty?
A: Many manufacturers offer 10–20 year warranties on insulated glass units.
Conclusion: Restore Comfort & Efficiency
Window seal failure may seem minor, but left untreated, it leads to higher bills, poor comfort, and reduced property value.
📞 Contact our team today for professional window seal failure repair.
