Common UPVC Window and Door Issues and How to Fix Them

UPVC windows and doors are popular for their durability, energy efficiency, and low maintenance. However, like any building component, they can develop problems over time. Common issues include misted-up windows, draughts, and broken hardware. Fortunately, most of these problems can be repaired rather than requiring a full replacement, saving both money and hassle.

Misted-Up Windows

One of the most frequent complaints with UPVC double-glazed windows is misting between the glass panes. This occurs when the seal around the glass unit fails, allowing moisture to enter the space between the panes. The result is a foggy or misty appearance that reduces visibility and insulation.

Solution: The only effective fix is to replace the glass unit. This involves removing the old sealed unit and installing a new one. While it’s possible to do this yourself, professional installation is recommended to ensure a proper seal and avoid further damage.

Draughts and Poor Insulation

Draughts are often caused by worn or damaged seals and gaskets around the window or door frame. Over time, these rubber components can deteriorate, leading to gaps that let cold air in and warm air out. This not only affects comfort but also increases energy bills.

Solution: Inspect the seals and gaskets for signs of wear or damage. If they are perished, cracked, or loose, they should be replaced. Carefully remove the old seal, measure and cut the new one to fit, then press it into place. For larger gaps or cracks in the frame, professional repair may be necessary.

Broken Hardware

Handles, locks, and hinges are mechanical parts that can wear out or break due to frequent use or poor maintenance. Stiff or broken hardware makes windows and doors difficult to operate and can compromise security.

Solution: Most hardware components can be replaced easily. Remove the old handle, lock, or hinge and fit a new one, ensuring it is aligned correctly. Lubricate moving parts regularly to prevent future issues. If the problem persists, it may be due to misalignment or frame warping, which requires professional adjustment.

Other Common Issues

• Difficulty Opening or Closing: Dirt buildup, misalignment, or worn-out hardware can make windows and doors hard to operate. Cleaning tracks and lubricating hinges often resolves this issue.
• Water Leakage: Leaks usually result from damaged seals or cracks in the frame. Inspect and replace seals, and repair any cracks promptly.
• Discoloration or Fading: Over time, UPVC frames may fade or become discolored. Specialized cleaning products can help restore their appearance.

When to Call a Professional

While many UPVC window and door repairs can be done as DIY projects, some issues—such as major frame damage, persistent leaks, or complex hardware problems—require professional expertise. A qualified technician can assess the situation and provide a lasting solution.

In summary, regular maintenance and timely repairs can extend the life of UPVC windows and doors, ensuring they remain secure, energy-efficient, and visually appealing for years to come.

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