How do I clean the WPC with a pressure washer or electric brush?

With its ideal properties, the material WPC (Wood Plastic Composites) has gained great popularity as balcony and terrace decking. The pressed mixture of wood fibres, wood flour and the plastics polyethylene (PE) and polypropylene (PP) resists abrasion, stress and precipitation well. Its Achilles heel is water pressure.

High quality tolerates high pressure better

The quality of WPC planks consists mainly in the mixing ratio between wood and plastic and the compaction and pressing of the heated material. The mixing ratios vary between five and fifty percent plastic content versus the wood fibres and wood flour contained.

As with other materials, quality levels provide for lower or higher resilience. The expected lifespan for the cheapest products is ten years and for top-quality products thirty years. When a high-pressure cleaner is used for cleaning, this quality determines sensitivity and compatibility.

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WPC can wash out

If suppliers and manufacturers of WPC tiles explicitly state the use of a high-pressure cleaner, special attention must be paid to the pressure, just as when cleaning paving stones.

In principle, too high an impact pressure can wash out the material or the wood fibres. The following procedures should be followed:

  • Maximum impact pressure eighty bar, which corresponds to a set nominal pressure of about 100 bar.
  • Keep a distance of at least thirty centimetres
  • Always spray in the direction of the grooves that are almost always present on the surface to prevent frictional pressure.

Cleaning with a pressure washer can have a negative effect on the life of WPC decking boards.

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Alternative electric cleaning brushes

There are special round brushes that are clamped into a cleaning head with a handle. They are somewhat reminiscent of floor brushes for indoor use. Vinyl brushes rotate when moving on the WPC floorboards. This kind of load does not bother the material and is similar to the comfort of a high-pressure cleaner.

Similar to a high-pressure washer, the devices can be used on all kinds of surfaces and consist of a simple and technically less susceptible mechanism. An attachment for cleaning joints is usually included in the scope of delivery.

Steam cleaners and pressure washers with a hot function can reach the melting temperature of the plastic they contain of about 200 degrees Celsius. This aspect should also be taken into account.

Alfred Harper

Alfred Harper

Alfred Harper is a former consultant and product expert at a company producing cleaning equipment. He was working at this position for more than 10 years and has gained incredible experience and knowledge as he has tested almost all pressure washers brands and models and became an expert in this field. Now, he is writing reviews and how-to articles about pressure washers and makes a great contribution to the Pressure Washers company to help people to choose the best cleaning equipment for home use.

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