Double glazed windows are a popular choice for homes and commercial buildings due to their energy efficiency, sound insulation, and aesthetic appeal. However, like any other home fixture, they can develop issues over time that require repair. This article provides a detailed guide on common problems with double glazed windows, how to identify them, and the steps to repair them effectively.

Understanding Double Glazed Windows

Double glazed windows consist of two panes of glass separated by a layer of air or gas. This design enhances insulation, reduces noise, and improves overall energy efficiency. The space between the panes is typically sealed to create a vacuum, which further enhances these benefits. However, this sealed unit can develop issues such as condensation, broken seals, and cracked glass.

Common Issues with Double Glazed Windows

1. Condensation Between the Panes

   • Cause: Condensation occurs when the seal between the panes fails, allowing moisture to enter the gap.
   • Signs: Foggy or cloudy appearance between the glass panes, water droplets, and visible mold or mildew.

2. Broken Seals

   • Cause: Over time, the seal that keeps the air or gas between the panes can break due to age, temperature fluctuations, or physical damage.
   • Signs: Drafts, increased noise, and higher energy bills.

3. Cracked or Damaged Glass

   • Cause: Impact from objects, extreme weather conditions, or structural issues can cause the glass to crack or break.
   • Signs: Visible cracks, chips, or shattered glass.

4. Faulty Frames

   • Cause: Wooden frames can rot, while metal and uPVC frames can warp or corrode.
   • Signs: Loose or warped frames, difficulty in opening or closing windows, and visible damage.

Steps to Repair Double Glazed Windows

1. Identify the Issue

   • Condensation: Check for foggy or cloudy areas between the panes.
   • Broken Seals: Feel for drafts, listen for increased noise, and monitor energy bills.
   • Cracked Glass: Inspect the glass for any visible damage.
   • Faulty Frames: Examine the frames for warping, rot, or corrosion.

2. Assess the Extent of Damage

   • Minor Issues: Small cracks or minor condensation can sometimes be repaired.
   • Major Issues: Severe damage to the glass, frames, or seals may require replacement.

3. DIY Repairs To Double Glazed Windows (Www.Repairmywindowsanddoors.Co.Uk) vs. Professional Help

   • DIY Repairs: Suitable for minor issues like replacing a seal or tightening loose screws.
   • Professional Help: Recommended for major issues like replacing the entire window unit or addressing structural damage.

4. Repairing Condensation

   • Drain the Moisture: Use a syringe or small vacuum to remove water droplets.
   • Replace the Seal: Install a new desiccant strip to absorb moisture.
   • Re-seal the Unit: Apply a new sealant around the edges of the window unit.

5. Repairing Broken Seals

   • Sealant Application: Apply a silicone sealant around the edges to prevent drafts and noise.
   • Replace the Unit: If the seal is severely damaged, consider replacing the entire window unit.

6. Repairing Cracked Glass

   • Minor Cracks: Use a glass repair kit to fill in small cracks.
   • Major Cracks: Replace the entire glass pane or the entire window unit if the damage is extensive.

7. Repairing Faulty Frames

   • Wooden Frames: Sand down any rotten areas and apply a wood hardener. Repaint or stain the frame.
   • Metal Frames: Sand down any rust and apply a rust inhibitor. Paint the frame with a weather-resistant coating.
   • uPVC Frames: Use a heat gun to reshape warped frames. Replace severely damaged sections.

Preventive Maintenance

1. Regular Cleaning

   • Exterior: Clean the outside of the windows to remove dirt and debris.
   • Interior: Wipe down the inside of the windows to prevent buildup.

2. Inspect Seals

   • Annually: Check the seals for any signs of wear or damage.
   • Sealant: Apply a fresh layer of sealant if necessary.

3. Check for Drafts

   • Seasonal: Use a lit candle to detect drafts around the windows.
   • Seal Gaps: Install weatherstripping or draft excluders to seal any gaps.

4. Maintain Frames

   • Wooden Frames: Apply a fresh coat of paint or stain to protect against moisture.
   • Metal Frames: Regularly inspect for rust and apply a rust inhibitor.
   • uPVC Frames: Clean and inspect for any signs of warping or damage.

FAQs

Q: Can I repair a double glazed window with condensation myself?

• A: Minor condensation can be addressed by draining the moisture and replacing the seal. However, for severe cases, it is advisable to consult a professional.

Q: How often should I replace the seals on my double glazed windows?

• A: Seals should be inspected annually. If they show signs of wear or damage, they should be replaced immediately to maintain the window's performance.

Q: What is the cost of replacing a double glazed window unit?

• A: The cost can vary depending on the size, material, and quality of the window. On average, replacing a single double glazed window unit can range from £100 to £500.

Q: Can I repair a cracked glass pane myself?

• A: Small cracks can be repaired using a glass repair kit. However, for larger cracks, it is safer and more effective to replace the glass pane or the entire window unit.

Q: How do I prevent condensation in my double glazed windows?

• A: Ensure proper ventilation, use dehumidifiers, and maintain the seals to prevent moisture from entering the gap between the panes.

Double glazed windows are a valuable investment for any home or commercial building, offering numerous benefits such as energy efficiency and noise reduction. By understanding common issues and taking proactive steps to maintain and repair these windows, you can ensure they continue to perform optimally for years to come. Whether you choose to tackle minor repairs yourself or seek professional help for more significant issues, regular maintenance is key to extending the lifespan of your double glazed windows.