How To Bend Composite Decking

If you’re looking to add a unique touch to your composite decking project, bending the boards can give it a creative and custom look.

While composite decking is known for its durability and low maintenance, many people shy away from attempting to bend it due to concerns about damaging the material. However, with the right tools and techniques, bending composite decking can be a simple and successful DIY project.

In this article, we’ll cover everything you need to know about how to bend composite decking, from selecting the right boards and tools to tips for achieving the perfect bend.

Whether you’re interested in adding curves or angles to your deck design or simply want to learn more about working with composite materials, this guide will help you achieve professional-looking results.

So grab your safety glasses and let’s get started!

Understanding Composite Decking

Composite decking is a popular choice for outdoor living spaces due to its durability and low-maintenance qualities. It is made from a combination of wood fibers and plastic, resulting in a material that mimics the look of real wood without the same level of upkeep required.

However, it’s important to understand the characteristics of composite decking before attempting to bend it. One thing to keep in mind is that composite decking has a higher coefficient of thermal expansion than traditional wood decking. This means that it expands and contracts more when exposed to changes in temperature. Therefore, bending composite decking requires careful consideration of the temperature and humidity levels during installation.

Another factor to consider is the type of composite decking being used. Some brands may be more flexible than others, which can affect their ability to be bent or shaped. It’s essential to check with the manufacturer for specific instructions on how to bend their product safely and effectively.

When properly installed and maintained, composite decking can provide years of enjoyment for outdoor living spaces. Understanding its unique qualities is key to successfully bending it into desired shapes or curves.

Choosing The Right Boards For Bending

First, it is important to choose the right type of composite decking for bending. Not all composite decking materials are created equal when it comes to bending capabilities. Look for brands that specifically advertise their products as being able to be bent without damage or warping.

Additionally, make sure to select boards that are the correct thickness and width for your bending project.

Once you have selected the appropriate type of composite decking, consider the temperature and humidity levels during the installation process. Bending composite decking requires heat and moisture in order to become pliable enough to bend without cracking. It is recommended to work on a warm day with high humidity or use a steam box or heat blanket to apply heat directly to the area where you need to bend the board.

Finally, it is important to take your time and use caution when attempting to bend composite decking. This process can be tricky and requires patience, attention to detail, and a steady hand. Make sure you have all necessary tools and protective gear before starting the project, and follow all safety guidelines provided by the manufacturer.

With proper preparation and technique, you can successfully bend composite decking into unique shapes and designs for your outdoor living space.

Tools You’ll Need For The Job

You’ll need a drill, saw, level, tape measure, screws and clamps to bend composite decking.

You’ll also need work gloves, safety goggles, a jigsaw, router, chalk line, safety mask, hammer, sander and some drill bits.

Don’t forget to wear your safety gear while working, it’s important!

Make sure your measurements are accurate with the level and tape measure.

You’ll need to use the screws and clamps to secure the decking in place.

Then you can use the jigsaw, router and sander to shape it.

Finally, use the drill and drill bits to make any necessary holes.


So, you’ve decided to bend your composite decking for a unique design. One of the essential tools you’ll need for this job is a drill. A drill will help you create pilot holes that will make it easier to screw in the decking boards without splitting them.

To start, you’ll want to mark where you want your pilot hole to go on the decking board. Once marked, use a drill bit that’s slightly smaller than your screws and create your pilot hole. Be sure not to drill too deep or too close to the edge of the board as this can cause splitting.

Additionally, if you’re using hidden fasteners, it’s important to use a specialized drill bit that matches the size and shape of your fasteners. These bits will allow for easy installation and ensure that your decking boards are securely attached.

With a little practice, drilling pilot holes and using specialized bits will become second nature when it comes to bending composite decking.


Now that we’ve discussed the importance of using a drill when working with composite decking, let’s move on to another essential tool you’ll need: a saw.

A saw will come in handy when cutting your decking boards to fit your specific design needs. Before you begin sawing, make sure you have the proper blade for the job.

Composite decking requires a special type of blade that’s designed to cut through its tough exterior without chipping or splintering. Using the wrong blade can lead to a less-than-desirable outcome and could even damage your materials.

When it comes to actually sawing, take your time and use steady pressure to ensure a clean cut. It may also be helpful to mark your cut line with a pencil beforehand to help guide your saw.

With the right tools and technique, cutting composite decking can be a breeze.

Now that we’ve covered drilling pilot holes and using a saw, let’s move on to the next tool you’ll need for bending composite decking: heat guns.

Stay tuned for our discussion on how heat guns can help you achieve the unique designs you’re looking for!


Now that we’ve discussed the importance of using a drill and saw when working with composite decking, let’s move on to another essential tool you’ll need: a level.

A level is crucial for ensuring that your decking boards are installed evenly and at the correct height. Without a level, your deck may end up looking uneven or wobbly.

To use a level, simply place it on top of your decking boards and adjust as necessary until it shows that everything is even. It’s important to check the level frequently throughout the installation process to ensure everything stays in place.

Using a level will help you achieve a professional-looking deck that will last for years to come.

Techniques For Bending Composite Decking

Now that you have all the necessary tools for the job, it’s time to get into the nitty-gritty of bending composite decking. This process can be a bit tricky, but with patience and attention to detail, you’ll be able to achieve your desired results.

The first thing you need to do is decide on the curve you want to create. Once you’ve done that, use a hose or spray bottle to wet down the area where the bend will be. This will make it easier for the decking material to flex without cracking or splitting.

Next, it’s time to heat up your composite boards using a heat gun. Be sure to wear gloves and eye protection while doing this, as the boards can get quite hot.

Once they’re warm enough, start bending them gently into place using clamps or weights to hold them in position until they cool down and set in their new shape.

Remember that practice makes perfect! Don’t be discouraged if your first few attempts don’t turn out exactly as planned.

Take breaks when needed and don’t rush through the process – precision is key.

Finally, always follow manufacturer guidelines for bending composite decking and never exceed recommended temperatures or bend radii.

With these techniques in mind and a bit of perseverance, you’ll soon become an expert at bending composite decking like a pro.

Tips For Achieving The Perfect Bend

Bending composite decking is not an easy task, but with the right techniques, you can achieve a perfect bend.

Here are some tips to help you achieve that:

Firstly, it is essential to choose the right type of composite decking for bending. Some composite decking materials are easier to bend than others. Ensure you select a type that can be bent without cracking or breaking.

Secondly, before starting the bending process, ensure you have all the necessary tools and equipment. You will need a heat gun or a heater blanket to heat the composite decking material and make it pliable enough for bending. You may also require clamps and a jig to hold the material in place during the heating process.

Lastly, take your time when bending composite decking. Rushing through the process can result in errors that could ruin your project. Ensure you follow all safety measures and guidelines provided by the manufacturer to avoid any accidents or injuries.

With patience and careful attention to detail, you can achieve an excellent bend on your composite deck boards.

Common Mistakes To Avoid

If you’ve followed the tips from the previous section, you’re well on your way to achieving a perfect bend on your composite decking. However, even the most experienced DIYers can make mistakes when attempting this challenging task. It’s essential to know what not to do if you want to avoid costly and time-consuming errors.

One common mistake is not heating the decking board enough. Composite materials need a considerable amount of heat to become pliable, and if you don’t reach the correct temperature, your deck will warp or break.

Another mistake is bending too quickly. Even if your board feels pliable, it’s crucial to take your time as rushing can cause imperfections in the bend that could ruin the look of your deck.

Another mistake is using the wrong tools for bending. You may be tempted to use everyday items like a hairdryer or torch, but these won’t produce enough heat for composite materials. A heat gun designed specifically for composite decking is needed for optimal results.

Additionally, failing to protect surrounding areas during the bending process can lead to damage that might require costly repairs.

By avoiding these common mistakes and sticking with tried-and-true methods, you’ll be able to achieve a beautiful bend on your composite decking that will last for years to come. Remember always to take care when working with heat and protect surrounding areas from any potential damage. With patience and persistence, anyone can master this technique and create stunning decks that are both functional and aesthetically pleasing!

Finishing Touches For A Professional Look

After successfully installing your composite decking, it’s time to add some finishing touches for a professional look.

One important aspect is ensuring all the edges are straight and even. Use a circular saw or a router to trim any excess material and create clean, crisp edges.

Another way to enhance the appearance of your composite decking is by adding fascia boards. These boards cover the ends of the deck boards, giving them a polished look. Fascia boards also provide additional protection against moisture and debris buildup.

Finally, consider using hidden fasteners for a seamless finish. These fasteners are installed underneath the deck boards, eliminating visible screws or nails. Not only do they enhance the aesthetic appeal of your decking, but they also reduce the risk of tripping hazards caused by protruding nails or screws.

By following these tips, you’ll achieve a professional-looking composite decking that will last for years to come.


In conclusion, bending composite decking can be a challenging but rewarding task. By understanding the composition of the boards and selecting the right ones for bending, you can achieve a customized look for your outdoor space. Remember to gather the necessary tools and use proper techniques to ensure a successful bend.

As with any DIY project, it’s important to avoid common mistakes and take your time to achieve the desired result.

And when you’re finished, don’t forget those finishing touches that will give your deck a professional look. With patience and attention to detail, anyone can master the art of bending composite decking.

So go ahead – bend away!