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How to Clean uPVC Window Sills

How to Clean uPVC Window Sills

19 Dec 2019

If you are replacing timber boards with modern uPVC window sills you can look forward to years of hassle-free maintenance. Internal home improvements that make use of alternatives to wood retain their ‘as new’ aesthetics for longer. You can kiss goodbye to flaking paint, chips, stains and rot. uPVC products are suitable for a wide range of applications – in any part of the house.

While plastic window sills are extremely robust, they will still need cleaning to prevent the build-up of dust and grime. If you tend to only clean sills and skirting a couple of times a year, you may need to put in a bit of extra work – but it will still be easy. There are things you can do to look after your sills so that they are easier to keep in ship shape condition.

As with any building material, there are some dos and don’ts. In this feature, we will help you ensure you know exactly how to maintain your boards.

uPVC window board essentials

You can stay on top of looking after your uPVC window sills by keeping frames around them dust-free. Every now and then, open your windows and remove dust from hidden areas such as around the hinges. A soft duster or microfibre cloth should do the trick. If you want to use a vacuum cleaner, make sure you use an attachment to reduce the risk of scratching your glazing.  

Next, use a mild detergent diluted in lukewarm water (for example washing up liquid) and a cloth or sponge to remove dust and dirt from the sill. Avoid using sponges with abrasive surfaces, such as wire, and never be tempted to use harsh cleaners. They can damage the surface of your sill and leave unsightly scratch marks. By sticking to mild, soft cleaning products you will retain a smooth, shiny finish. This is especially the case if you have invested in a grained finish sill. These are especially popular and can include finishes such as black ash, rosewood and traditional English oak.

If you end up using a little too much water on your sill, be sure to remove the access with an absorbent cloth. An old rag or dry microfibre duster is ideal. It is worth noting that, if you have had your sills for a few years, they could require a little additional work. Dated uPVC is prone to dull over time – largely due to the presence of layers of dust and dirt. You can use a vinegar and water solution to remedy this. Simply mix one part of vinegar to three parts of water, preferably hot, and use an old spray container to lightly the coat the sill. Leave the solution to do its magic for five to ten minutes and then wipe away and dry.

If you are worried about using vinegar on your sill, you can use an every-day cleaning wipe or invest in a specialist uPVC cleaner. There are plenty on the market.

How not to clean uPVC window sills

You can damage uPVC window sills using products you may have around the home. To ensure you maintain your sills in tip top condition, always follow the advice above. In reality, you will only need to wipe down your boards every once and a while with a mild cleaning solution or simply warm water. Never be tempted to reach for one of the following:

  • Any type of cream cleaning fluid, including those manufactured by leading brands
  • Solvents such as white spirit
  • Make-up removers that include solvents like acetone, commonly found in nail polish remover. Don’t be tempted to try and remove a stubborn mark with these products
  • Household essentials such as lubricating oils like WD40
  • Scouring or wire pads
  • Any products containing bleaching agents

If you use any one of the products above, you could end up with a dull or discoloured sill. Just stick to warm, soapy water. Honestly, that is all you need. By following this simple advice, you will maintain a gloss finish and avoid scratches.

Buying new window sills

If you are shopping around for new internal boards, uPVC window sills are a great buy. As well as outperforming timber, they are easy to install and require virtually no maintenance – other than the occasional clean. Modern building plastics reflect popular interior design trends. So, if you want to include your sills in a new décor theme, you can. The days of being able to choose any colour you like so long as it is white is over.

Modern plastics used in building projects are designed for their durability and aesthetics. They are also manufactured to ensure they require very little attention once installed. This is good news if you are tired of having to sand down and repaint timber sills every couple of years. Now you can choose from a range of finishes that best suit your décor and the personality of a room. You can add warmth or texture to an environment while making your life easier.

uPVC window boards are available to buy online. Top outlets will have matching end caps available so you can finish your installation project to a professional standard. The benefits of buying online include no pressure from a salesman, the chance to browse the options in your own time and, more often than not, lower prices. You can also benefit from home delivery which saves time as well as a lot of running around.

In addition to offering a wider choice of finishes, online outlets will also give you a range of window board styles. They can include bullnose and square shapes. Before making a purchase make sure you properly measure the size you will require and consider if you want a sill with a double edge. Never buy a sill without end caps – it will leave your project looking half-finished and limit the visual appeal of your handiwork. If you are not sure which sill is best for your project, choose an online supplier that offers free technical support.

uPVC window boards and sills are a savvy buy. They look good, are easy to maintain and will last and last.