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does composite decking warp

If you've decided that you'd like to add decking to your garden, you'll be faced with the seemingly impossible task of choosing which decking material is right for you! There's traditional hardwood decking, plastic decking and composite decking - all of which have their own benefits and downfalls. In order to decide between these options, you'll need to take a few factors into consideration, for example the cost, the durability and the impact on the environment.

One thing that doesn't always get considered is whether or not the decking will warp. Plastic decking is well known for warping under pressure, while timber decking tends to crack and splinter, but what about composite decking? Does composite decking warp? Let's find out...

What causes warping?

As we've mentioned, it tends to be plastic decking that warps the most and here's why. When plastic decking is in direct sunlight, it can become incredibly hot - too hot to walk on! When the boards reach these high temperatures, they become soft and expand, making them far more pliable. All it takes is for someone to step on the boards while they're in this state, and they'll begin to warp. If you have a few consecutive warm days, you can see how this problem could worsen over time. Sadly, once boards have warped, it's very difficult (if not impossible) to get them back into their original shape. A warped deck will more than likely need to be replaced. 

How is composite decking different?

Unlike plastic boards, composite decking is manufactured using a combination of wood and polymer materials. This means it has a much stronger composition that cheap plastic boards. During periods of warm weather, composite decking doesn't take on heat in the same way as plastic boards. In fact, manufacturers offer include UV-resistant pigments to help the boards deflect heat. This makes it cooler underfoot but also helps to reduce the chances of warping.

Can composite decking warp?

While every effort is made to ensure that composite decking doesn't warp like plastic decking - it can still happen. One of the best things you can do to make the chances of warping lower is to install your composite deck boards correctly. It's vital that you leave the right amount of space between the boards so that they can expand and contract in different temperatures. The recommended space between boards is 3-5mm.

Why choose TimberTech?

If you're looking for some of the robust composite decking on the market, you can't go wrong with TimberTech boards. We've been manufacturing composite decking for decades, so we've been able to perfect our manufacturing process over a long time. This means our composite decking boards are very unlikely to warp, in fact, we're so confident in the integrity of our boards that most of them come with a 25-30 year warranty!

Shop TimberTech Decking Now >

Read More: TimberTech's Top Composite Decking Installation Tips

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