Solid or hollow composite decking board – which is better? Comparison and choice.

What is the difference between a solid composite decking board and a hollow one?

At first glance, they may look very similar – especially to someone planning to buy composite decking boards for the first time. But look a little closer and you’ll see that the differences are significant, both in their construction and in use. 

1. Construction.

• Solid composite decking board – as the name suggests, it is completely solid, with no hollow spaces inside. This makes it stronger and more resistant to deformation.
• Hollow composite decking board – has internal chambers (hollow spaces) designed to reduce weight and manufacturing costs. Unfortunately, this also means less rigidity and a greater susceptibility to cracking.

2. Strength. 

• Solid board can withstand heavy loads and is ideal for areas with high footfall.
• Hollow board may suffer mechanical damage over time, especially with intensive use or when installed on uneven ground.

3. Weather resistance. 

• Solid construction means the board is less affected by temperature changes, does not absorb moisture and does not deform.
• Hollow boards are more prone to movement, which can lead to fixings becoming loose or to warping. 

4. Installation and maintenance. 

• Solid boards are easier to install in challenging conditions, for example on uneven ground, because they are more rigid and less prone to flexing.
• Hollow boards require greater precision when laying and more frequent checks over time.

Why is a solid composite decking board a better choice?

Yes, a solid composite decking board is more expensive – that’s true. But could the price difference pay for itself after just the first season? Here are a few reasons why it’s worth investing a little more: 

• Built to last. 

Thanks to its construction, a solid board is more resistant to mechanical damage and abrasion, as well as to frost and UV rays.

• Lower risk of complaints.

Users of solid boards report fewer problems with deformation, breakage or discolouration. It’s an investment in peace of mind and avoiding the need for repairs or replacement.

• Better appearance and aesthetics.

Solid boards often have a more natural texture and colour, making them look more like traditional timber.

• Versatile applications.

They are suitable not only for patios, but also for paths, driveways, swimming pool surrounds and even public spaces (e.g. promenades and municipal gazebos).

What about the price?

The truth is that a solid composite decking board can cost as much as 20–30% more than a hollow one. But let’s consider: 

• Service life – even 2x longer 
• Fewer maintenance problems
• Greater safety in use (fewer cracks and loose components)

So... over the course of a few years, it may turn out that the cheaper option costs more!

When is it worth choosing a hollow board?

Of course, it all depends on your needs. If you’re planning a patio in a small space that won’t be used often, a hollow board may be sufficient. It is also an option for those on a very tight budget who want the lowest possible initial cost.

But you should be aware that this may involve a greater risk of failure, especially if installation is less careful.

When is a solid board the perfect choice?

• You have children or pets and want a solid, safe surface.
• You want your patio to last for years without needing repairs.
• You plan to use the space intensively – for parties, barbecues, garden furniture, etc.
• Aesthetics and a high-quality finish matter to you. 

Good news: YES – solid composite decking boards will be available from us! 

We know that many people have been waiting for this news, so we’re delighted to announce that solid composite decking boards will soon be added to our product catalogue! These will be top-quality boards, available in a range of colours and finishes. 

In brief – what should you remember?

• Solid composite decking boards are the choice for those who value quality, durability and aesthetics.
• They are more expensive, but there is a specific reason for the price difference.
• Hollow decking boards are suitable for less demanding conditions and a lower budget.
• Solid boards are on their way to our range – and we can’t wait to show them to you!