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Our top tips on keeping UPVC windows looking tip-top and streak-free

One of the main bonuses of having uPVC windows is that they require much less cleaning and maintenance than their traditional timber counterparts. 

Basically, the frames should be given a routine maintenance clean at least twice a year and the glass – well, whenever you feel like it. 

Keep reading to hear our top tips to keep your uPVC windows spick and span all year round:

What to watch out for:

Avoid any kind of glass-cleaning product on the actual uPVC frame, as well as bleach, white spirits and caustic or ammonia-based cleaning products. That’s because they can result in discoloration and permanent damage to your window frames.

Also, don’t use any scouring pads or the rougher part of a sponge – even on that one spot of stubborn grime – as the glass and the uPVC can both scratch very easily.

Keep it simple

The good news is that all you really need in order to clean your uPVC window frames is some warm soapy water, a non-abrasive sponge and a cloth to wipe the surface dry. 

If some stains require something stronger, then you can consider using a cream cleaner – just make sure it’s non-abrasive. There are a number of different products on the market specially designed for cleaning uPVC surfaces, always use these to ensure your window frames don’t get marked.

Dry it off

Make sure that after cleaning your frames with soap and water, you dry them thoroughly with a clean cloth. That way you will avoid any kind of rusting, condensation or mould growth.


Aside from the window frame and glass, it’s also worth doing some routine maintenance on the handles and window locks of your frames.

@glazingblogger: “Regular maintenance of exposed metal parts by removing dust and grit will help them perform at their best. As a result of normal operating and atmospheric conditions, moving mechanical parts of windows and doors also require occasional lubrication.”

Any dirt around the handles can be wiped away with a damp cloth, and the area dried afterwards. Screws should also be checked and tightened if necessary using a screwdriver, making sure not to over-tighten or it can compromise the functionality of the handles and locks. 

For the locks, wipe the surface clean with an oiled cloth, and spray the actual lock mechanism with an appropriate lubricant.

Window cleaning steps

Now that you know what tools and products are good to use and which are best avoided, here is our guide for cleaning your windows step-by-step:

  1. Push the windows fully open and use either a duster or a soft-brush vacuum attachment to remove any light dust from the insides of the frames
  2. Clean the inside of the hinges and frames with a damp cloth, ensuring you get rid of any built-up grime.
  3. Spray your usual glass-cleaning product – make sure not to spray any on the frame itself. Wipe the product off
  4. With warm water and soap, gently wipe down the glass to remove any stains
  5. Thoroughly dry the glass – both inside and out
  6. Lubricate the hinges with oil