How to Build a Deck Bench With Backrest

Sitting outside on your deck on a summer evening, relaxing and enjoying the fresh air, is one of life’s simple pleasures. However, most decks lack one crucial element – comfortable seating with a backrest. Leaning against the railing or sitting on the bare wooden boards only shortens it for lounging. Thankfully, building a simple bench with a sturdy backrest is a fun and affordable weekend project that will take your deck space to the next level.

How to Build a Deck Bench With Backrest

In this blog post, I’ll walk you through the step-by-step process of how to build a deck bench with backrest, along with some design ideas to make it match your home’s style. By the end of the weekend, you’ll be relaxing in deckchair comfort while gazing at the trees or stars above.

Necessary Items

To build a deck bench with a backrest, you will need the following items:

  • Measuring Tape
  • Pencil
  • Circular Saw
  • Power Drill and Bits
  • Screwdriver
  • Wood Screws
  • 4×4 Pressure-Treated Posts (2)
  • 2×6 Pressure-Treated Boards (8)
  • 1×6 Pressure-Treated Boards (3)
  • 1×2 Pressure-Treated Board (4)
  • Deck Screws
  • Wood Glue
  • Protective Stain or Paint

10 Steps on How to Build a Deck Bench With Backrest

Step 1: Measure and Cut the Posts

Using the measuring tape and pencil, measure and mark two posts to a length of 3 feet. These will be the front and back posts of your bench. Using the circular saw, cut the bars along the marked lines.

Step 2: Measure and Cut the Seat Support

Measure the length between the two posts and cut two pieces of 2×6 boards to this length. These will serve as support for your bench seat.

Step 3: Measure and Cut the Back Support

Using the measuring tape, measure the height from the top of the front post to the top of your deck railing. Subtract 2 inches from this measurement and cut two pieces of 2×6 boards to this length. These will be used as support for your backrest.

Using a Measuring Tape

Step 4: Attach Seat Support to Posts

Using the power drill and wood screws, attach the two seat supports to the front and back posts, making sure they are level. Use at least two screws on each base for added stability.

Step 5: Attach Back Support to Posts

Using the power drill and wood screws, attach the two back supports to the posts at your desired height. Make sure they are securely attached for safety.

Step 6: Measure and Cut the Seat Boards

Using the measuring tape, measure the length between the two seat supports. Cut three pieces of 1×6 boards to this length.

Step 7: Attach Seat Boards

Place the three seat boards on top of the seat supports and use wood screws to attach them securely to the supports. Ensure they are evenly spaced and flush with the front and back of the bench.

Step 8: Measure and Cut the Backrest Boards

Using the measuring tape, measure the length between the two back supports. Cut three pieces of 1×6 boards to this length.

Step 9: Attach Backrest Boards

Place the three backrest boards vertically between the two back supports. Use wood screws to attach them securely to the supports, making sure they are evenly spaced and flush with the top of the supports.

Step 10: Add Finishing Touches

To add a decorative touch, cut four pieces of 1×2 boards to the length of your bench seat. Attach these to the front and back posts with wood glue, ensuring they are evenly spaced and flush with the top of the heart. Finally, apply a protective coat of stain or paint to protect your new deck bench from outdoor elements.

Apply a Protective Coat

Building a deck bench with a backrest not only adds functionality and comfort to your outdoor space but also allows you to customize the design to match your style. With these ten simple steps and a few essential tools, you can create a sturdy and stylish bench to elevate your deck experience. So next time you’re outside enjoying the warm weather, sit on your new bench and relax.

8 Design Ideas for Your Deck Bench

Now that you have built your deck bench with a backrest, it’s time to add some personal touches to make it stand out. Here are a few design ideas to get you started:

1. Add Cushions or Pillows for Extra Comfort and Style

Adding cushions or pillows is a simple way to make your bench even more comfortable and inviting. You can choose from various colors and patterns to match your home’s decor, and they can easily be changed out for different seasons or occasions.

2. Incorporate Built-In Storage

Another practical design idea is to add built-in storage under the bench seat. This is a great way to save space on your deck and keep items like outdoor pillows, blankets, and toys out of sight when not in use.

3. Incorporate Planters

For those with a green thumb, consider incorporating planters into the design of your bench. You can attach them to the front or sides of the court for a beautiful display of flowers or herbs.

4. Paint or Stain in a Bold Color

Feel free to add a pop of color to your deck bench by painting or staining it in a bold hue. This can make your bar stand out and become a focal point on your deck. Just make sure to use a protective coating specifically for outdoor use.

5. Add a Personalized Touch

Consider adding your family’s last name or a meaningful quote to the backrest of your bench using stencils or wood-burning techniques. This adds a personalized touch and makes your bar genuinely unique.

6. Opt for Curved Design

Instead of the traditional straight design, try incorporating a curved design for your bench. Not only does this add visual interest, but it also allows for more comfortable seating.

Try Incorporating a Curved Design

7. Add Armrests

For added comfort and support, consider adding armrests to your deck bench. This makes getting in and out of the court more accessible and provides a place to rest your arms while relaxing.

8. Mix and Match Materials

Who says your bench has to be made entirely out of wood? Consider mixing and matching materials like metal, stone, or even concrete for a modern and unique design. Just make sure they are weather-resistant and can withstand outdoor conditions.

With these design ideas, you can transform your simple deck bench into a stylish and functional addition to your outdoor space. Get creative and make it your own!  So grab a cold drink and enjoy the views from your new deck bench with a backrest.

8 Things to Avoid When Building a Deck Bench

While building a deck bench may seem like a simple project, inevitable mistakes can lead to safety hazards and affect your bench’s overall look and functionality. Here are eight things to avoid when building your deck bench:

1. Not Using Pressure-Treated Wood

When working with wood for outdoor projects, it’s essential to use pressure-treated wood resistant to rot and decay. Using untreated wood can lead to a shorter lifespan for your bench.

2. Not Ensuring Proper Support

Make sure the posts and supports of your bench are adequately secured with screws or bolts, as using only nails may not provide enough stability. This is especially important if you plan to have multiple people seated on the bench simultaneously.

3. Not Checking for Level

It’s essential to check for levelness as you build your bench, especially if it will be placed on uneven ground. This will ensure a safe and comfortable seating surface.

Check for Levelness as You Build Your Bench

4. Not Leaving Enough Space Between Boards

Make sure to leave enough space between boards for drainage and ventilation. This will prevent water from pooling and potentially causing damage to your bench.

5. Not Sealing the Wood

Protect your bench from outdoor elements by applying a protective coating like stain or paint. Skipping this step can lead to rotting and deterioration over time.

6. Not Using the Right Tools

Using the right tools for your project is essential to ensure proper and safe construction. This includes a measuring tape, saw, drill, and level.

7. Not Building According to Local Building Codes

Before starting your project, check with local building codes for any regulations or requirements for building a deck bench. This will ensure your bench is up to safety standards.

8. Not Taking Your Time

Building a deck bench may seem simple and quick, but rushing through it can lead to mistakes and potential hazards. Take your time and follow the steps carefully for a sturdy and safe bench.

By avoiding these common mistakes, you can ensure the longevity and safety of your deck bench. Now enjoy the fruits of your labor by lounging on your new bench with a backrest!  So whether you’re hosting a backyard BBQ or simply soaking up some sun, your deck bench will provide functionality and style to enhance your outdoor experience.

Frequently Asked Questions About Deck Benches

Do I Need a Backrest for My Deck Bench?

While unnecessary, a backrest can provide added support and comfort for those seated on the bench. It can also add visual interest and make the court more inviting.

How Many People Can Fit on a Deck Bench?

This will depend on the size and design of your bench. On average, a standard-sized deck bench can fit 2-to three people comfortably.

Can I Build a Deck Bench with Storage Underneath?

Yes, you can incorporate built-in storage underneath your deck bench. This is a great way to save space and keep items out of sight when not in use.

How Do I Maintain My Deck Bench?

Regularly clean your deck bench with soap and water and reapply protective coatings as needed to maintain it. Check for any loose screws or bolts and tighten them if necessary.

Regularly Clean Your Deck Bench

Can I Use Different Materials for My Deck Bench?

Yes, you are not limited to just wood for your deck bench. Consider mixing and matching materials like metal or stone for a unique and modern look.

How Long Will My Deck Bench Last?

With proper maintenance, your deck bench can last for many years. Using pressure-treated wood and regularly sealing the wood will help prolong its lifespan.  So go ahead and start planning your deck bench project, and soon, you’ll have a beautiful and functional addition to your outdoor space. Remember to get creative, take time, and prioritize safety in every process step.


In conclusion, building a deck bench with a backrest may seem daunting, but it can be a rewarding and enjoyable project with the suitable materials, tools, and knowledge of how to build a deck bench with a backrest. Not only will it add functional seating to your outdoor space, but it will also enhance the overall aesthetic and appeal of your deck.

Whether you’re an experienced DIYer or just getting started with woodworking, this project is worth considering. So why not gather your materials and begin the journey of creating your very own deck bench?

As always, follow safety precautions and take your time to ensure a sturdy and durable final product. And remember, there are endless possibilities for design and customization – let your creativity shine through.

Photo of author

Adrian Green

Adrian is a woodworking hobbyist and has loved Woodworking since he was 10 years old. Back then in childhood, his father used to have a furniture shop. He used to help his dad and learned a lot from him about how to fix woodworking furniture, basic carpentry knowledge and also about how to work hard and take care of business. He enjoys woodworking as a hobby. He loves the feeling of creating something with his own hands, and the satisfaction that comes from seeing his finished products used by others.

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