How to maintain your uPVC and composite decking

Liniar uPVC composite decking has a much, much longer life span than traditional timber alternatives and requires a lot less maintenance. However, uPVC and composite deckboards still need a little TLC to keep them in tip top condition.

We have put together a helpful guide on how to maintain your uPVC or composite deck, including some important Dos and Don’ts!

How often should you clean a composite deck?

We recommend cleaning a uPVC or composite deck at the change of each season, with extra cleaning in the autumn.

Leaves left lying on a uPVC or composite deck may cause a build-up of algae underneath them and can also be very slippery. Simply brush them off with a soft broom until all the leaves have finished falling.

What’s the best way to clean a uPVC or composite deck?

Using soapy water with a soft brush, wash the deck and rinse with clean water. This will remove any surface dirt.

Can a jet wash be used on uPVC or composite decking?

You can use a jet wash, but (and this is important!) it must be set to the lowest pressure with the nozzle on the widest setting. The nozzle should not be allowed to get close to the deck as a high-pressure water flow can cause damage at close range. Our advice is, if you’re not confident get a professional jet washing company to clean your deck.

What can ruin a uPVC or composite deck?

uPVC and composite decks are lot hardier than traditional timber decking, but they are certainly not ‘bomb proof’. As with any decking surface, there are a few things that can cause staining or scratching.

As above, jet washing with the nozzle too close to the deck or using too much pressure may leave your deck discoloured.

As with any deck or patio area, liquids such as red wine may cause permanent staining, so it’s best to avoid them. If spillages occur, clean the area with clean, soapy water immediately.

Can I use bleach on a composite deck?

You might be tempted to give your deck a clean with bleach, but strong cleaning solutions, especially if they contain chlorine bleach, will cause discolouration. As above, use soapy water only.

What else should I avoid using on a composite deck?

Metal objects that are likely to rust will leave stains if left on uPVC or composite decking, so put something underneath them to protect the deckboards and keep your deck in tip top condition (this also applies to timber decking).

For the same reason, take care to avoid mats or rugs with metal grommets or details which can rust – and don’t choose rubber or latex backed mats or rugs, as these can leave marks on your deck. Instead, it’s best to select rugs made from colourfast, synthetic materials like polypropylene, recycled plastic, polyester, or mats with a vinyl backing.

Metal bottomed furniture can also cause scratching to uPVC and composite decking. When you buy your decking furniture, ensure that it has protection under the legs to keep your decking scratch-free.

Firepits and disposable barbecues will potentially scorch uPVC or composite decking. Our advice would be to avoid anything that is excessively hot coming into contact with your deckboards to reduce the risk of scorch marks appearing.

Clearing snow from your composite or uPVC decking is fine but do not use a metal shovel as this will cause scratching. Instead, use a soft broom to sweep the snow away.

Find out more

Liniar deckboards, if looked after properly, can last for many years, and is fully recyclable at the end of its useful life.

Learn more about Liniar’s Switchboard and SwitchBoard Ultra decking ranges https://www.liniar.co.uk/decking/