Does composite decking scratch? Facts, myths and practical advice.

What exactly is a composite decking board?

Before we get to scratches, it’s worth understanding what a composite decking board is (also known as WPC – Wood Plastic Composite). It is a material made from a mixture of:

• wood flour,

• plastics (e.g. polyethylene),

• pigments and performance-enhancing additives.

This produces a durable, waterproof and attractive product that looks like timber but has much better technical properties. It does not rot or decay and does not need varnishing. Sounds perfect, doesn’t it?

All right, but... does it scratch?

Yes – but not that easily. 

A composite decking board is not completely scratch-resistant, especially with intensive use or contact with sharp objects. However, it performs much better than natural timber.

Factors that can cause scratches:

• Moving garden furniture – e.g. metal chairs without protective pads.

• Children playing with hard toys – ride-on toys, scooters, etc.

• Pets – particularly dogs with sharp claws.

• Sand and small stones – carried in on shoes, they can act like sandpaper.

• Winter tools – e.g. snow shovels with a metal edge.

Different types of composite, different levels of resistance.

Not all composite decking boards are the same! Different types are available on the market, with varying durability and scratch resistance.

Solid boards vs. hollow boards.

• Solid – heavier, more resistant and often denser.

• Hollow (chambered) – lighter and cheaper, but less resistant to mechanical damage.

Grooved boards vs. smooth boards.

• Grooving (grooves) can help to hide minor scratches.

• Smooth surfaces – look modern, but show scratches more quickly.

How do you care for a composite decking board to prevent scratches?

You don’t need to treat it like an egg, but a few simple habits will help it keep looking good for longer:

Practical tips:

1. Use protective pads under garden furniture – especially metal furniture.

2. Avoid dragging heavy objects across the surface.

3. Sweep sand and dirt off the decking regularly.

4. Do not use metal tools for cleaning.

5. Invest in protective mats for under the barbecue or plant pots.

Can scratches be removed?

Depending on the depth of the scratch and the type of composite – sometimes yes, sometimes no.

How to deal with scratches:

• Minor scratches – often "close up" on their own under the influence of heat and sunlight.

• Sanding with sandpaper – only on selected types of boards (e.g. solid, grooved).

• Specialist composite care products – available in DIY stores.

Note: Always check the manufacturer's recommendations! Some boards have a coated surface, and incorrect cleaning can make the problem worse.

Composite decking board vs wood – which wins when it comes to resistance?

If we compare the two materials in terms of scratch resistance:

As you can see, composite performs quite well. Although it can get scratched, it does not need to be oiled, painted or protected – all of which are necessary with wood.