How To Clean UPVC Window Frames

Maintaining the appearance and functionality of UPVC window frames is essential for ensuring the longevity and aesthetic appeal of your home. Unplasticised Polyvinyl Chloride, commonly known as UPVC, is a material renowned for its durability, energy efficiency, and low maintenance. However, regular cleaning is crucial to prevent dirt build-up, discolouration, and to keep your windows looking as good as new. This guide will walk you through the best practices for cleaning UPVC window frames, ensuring they remain in pristine condition year after year.

Getting Started: What You Will Need

Before you begin, it’s important to gather all necessary supplies. You will need:


  • Soft cloth or sponge
  • Bucket of warm soapy water (a mild detergent is sufficient)
  • Soft-bristled brush (for more stubborn dirt)
  • Vinyl-safe cleaner (optional for tougher stains)
  • Glass cleaner (for the window panes)
  • Dry cloth for buffing


Having these items at hand before you start will streamline the cleaning process, making it efficient and effective.

The Cleaning Process

Initial Wipe Down

Start by opening your windows to access all surfaces easily. Using a soft cloth or sponge dipped in warm soapy water, gently wipe down the UPVC frames. It’s essential to avoid abrasive materials or harsh chemicals, as these can damage the UPVC surface.

Dealing with Stubborn Stains

For areas with more stubborn dirt or stains, a soft-bristled brush can be used to gently scrub the surface. Apply minimal pressure to avoid scratching the frames. If necessary, a vinyl-safe cleaner can be employed to tackle these tougher stains. Remember, UPVC windows require careful handling to maintain their integrity while cleaning.

Rinsing and Drying

After scrubbing, rinse the frames with clean water to remove any soap residue. It’s crucial to thoroughly dry the UPVC frames with a dry cloth to prevent water spots and to ensure a streak-free finish.

Polishing for Extra Shine

For an added shine, you can apply a specialised UPVC cleaner or a simple solution of water and vinegar. Apply lightly with a soft cloth, then buff to a shine. This step is optional but can make a significant difference in the appearance of your windows.

Seasonal Maintenance Tips

To keep your UPVC window frames in top condition, it’s beneficial to incorporate a few maintenance practices into your routine:


  • Regular Checks: Inspect your window frames and seals regularly for any signs of wear and tear. Early detection can prevent more significant issues down the line.
  • Lubricate Moving Parts: Applying a silicone-based lubricant to the hinges and locks can ensure smooth operation and prevent rusting.
  • Avoid Direct Heat: Keep any direct heat sources away from your UPVC frames to prevent warping or discolouration.

Final Touches: Making Your Windows Sparkle

While cleaning the frames, don’t forget the window glass. Use a quality glass cleaner and a lint-free cloth to remove fingerprints and smudges, ensuring your windows are not only well-maintained but also provide a clear view outside.


In conclusion, maintaining your UPVC window frames doesn’t have to be a daunting task. With regular cleaning and proper care, you can ensure they remain in excellent condition, enhancing the overall look and feel of your home. By following the simple steps outlined above, you’ll not only preserve the functionality and appearance of your windows but also extend their lifespan, providing a fresh outlook for years to come.

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