Looking for a fun, affordable, and useful weekend project? Try building a cinder block bench! It’s a great way to create beautiful outdoor seating using just a few inexpensive materials. You don’t need to be a professional builder, either. All you need are cinder blocks, wood planks, some creativity, and a little time.
Cinder block benches are popular with DIY lovers because they’re super easy to make and they look great in almost any yard or patio. Plus, they’re strong, long-lasting, and totally customizable to match your outdoor space. Whether you’re adding a chill spot to your garden or creating a kids’ reading corner, cinder block benches are the perfect mix of form and function.
In this complete guide, we’ll show you why these benches are so popular, how to build one yourself, and tons of different tips, tricks, and ideas to make your cinder block bench both beautiful and comfortable.
What Is a Cinder Block Bench?
A cinder block bench is an outdoor bench made from two main things: cinder blocks and wood planks. That’s it! These benches are known for their modern, minimal look and how easy they are to build at home.
The design usually includes:
- Cinder blocks stacked at each end like legs
- Wooden planks that slide through the holes or sit on top
- Optional extras like cushions, sealant, paint, or even planters
The best part? No power tools are required if you’re using pre-cut wood. And because the cinder blocks are heavy, you usually don’t even need glue or screws to hold them down.
Why People Love Cinder Block Benches
So, what makes a cinder block bench such a big hit?
Here are a few great reasons:
- Easy to build – Most benches take under two hours to make
- Budget-friendly – All materials cost less than a trip to the hardware store
- No professional skills needed – If you can stack and slide, you can build this
- Super sturdy and weather-resistant – It holds up all year long
- Perfect for patios, gardens, and porches – Great for city and country homes alike
Many people also love the idea of reusing simple materials in a smart and creative way.
Materials You Need to Build a Cinder Block Bench
You don’t need a long shopping list to get started.
Here’s what you’ll need for a basic bench:
- 6 to 8 cinder blocks (standard size, hollow)
- 3 to 4 wood planks (usually 4×4 inches or 2×6 inches, 64–72 inches long)
- Outdoor wood sealer or paint (optional)
- Decorative pillows or cushions (optional)
Additional supplies that may be helpful:
- Sandpaper (for smooth wood edges)
- Construction adhesive (for extra safety)
- Work gloves (for lifting blocks)
- Measuring tape
- Level (to make sure your bench is even)
That’s it! For less than $100, you can build a full-size, strong bench that lasts for years.
How to Build a Cinder Block Bench Step-by-Step
Ready to build your first bench? Here’s a step-by-step guide to make sure everything goes smoothly.
Step 1: Choose a Flat Surface
Pick where the bench will go. It could be grass, a patio, or gravel. Make sure it’s flat and solid.
Step 2: Stack the Cinder Blocks
Place three cinder blocks vertically on each side to make two “legs.” You may use two blocks if you want a shorter bench.
Step 3: Insert or Place Wood Planks
Slide your wood planks through the holes (usually if using 4x4s). Or, rest them across the top if you’re using wider 2x6s.
Step 4: Check Everything
Use a level to make sure the bench is even on both ends.
Step 5: Add Finishing Touches
Add paint, stain, pillows, or sealant if you want to personalize your bench.
Now sit back and relax—you did it!
Cinder Block Bench Ideas for Every Space
There’s more than one way to enjoy a cinder block bench. Here are a few fun and creative ideas:
- Garden bench: Decorate it with small flower pots on the block sides
- Backyard reading nook: Add cozy pillows and a throw blanket
- Front porch welcome bench: Paint it with warm colors for a friendly look
- Kids’ play area seat: Lower the height and add colorful cushions
- Fire pit seating: Build a circular bench around a fire pit
- Built-in planter bench: Use some cinder blocks as planters on the ends
No matter your style, your bench can match it perfectly with just a few creative touches.
Paint and Finish Options for Your Cinder Block Bench
Want to give your bench a unique flair?
Try one of these popular paint and finish options:
- Bright white blocks and stained wood = Clean, modern look
- Natural gray blocks and dark-stained planks = Rustic and bold
- Bright, colorful blocks = Fun for kids or summer spaces
- Chalk paint and distressed finish = Perfect for a farmhouse style
- Spray paint graffiti style = Artsy, urban vibe
Don’t forget: Always use outdoor-safe paint or sealant to protect your wood and blocks from rain and sun.
Tips for Making Your Cinder Block Bench Last Longer
Your cinder block bench is already tough, but with a few easy tips, you can keep it looking new for years.
- Apply wood sealer every 1–2 years to stop cracking or fading
- Place blocks on a paver base to avoid sinking into soft ground
- Add rubber pads under blocks to prevent concrete scratching on patios
- Store cushions indoors during rain or snow
- Repaint blocks if they fade over time
These small steps help protect your bench against weather, bugs, and wear.
Safety Tips While Building
Even though this is a simple project, safety is still important.
Keep these safety tips in mind:
- Wear gloves when moving cinder blocks (they can scratch your skin)
- Be careful while lifting—cinder blocks are heavy
- Sand wood edges to avoid splinters
- Don’t use damaged or cracked blocks
- Keep kids and pets at a distance while you’re building
A few careful steps make it safe and fun for everyone.
Where Can You Buy Supplies for a Cinder Block Bench?
You can find all the supplies for a cinder block bench at your local:
- Home Depot
- Lowe’s
- Menards
- Ace Hardware
- Local lumber yards or garden centers
You can also order online from Amazon or specialty hardware stores. Just make sure if you’re buying online that the sizes match what you need.
Can Kids Help Build a Cinder Block Bench?
Absolutely—this can be a fun family project! Kids can:
- Help stack smaller cinder blocks
- Paint or decorate
- Arrange pillows or cushions
- Hold the level to check the bench
Just make sure an adult handles the heavy lifting and sanding. Building something as a team makes the bench even more special.
Cinder Block Bench vs. Other Benches
So, how does a cinder block bench compare to store-bought or wood-only benches?
| Feature | Cinder Block Bench | Wood Bench | Metal Store-Bought Bench |
| Cost | Low | Medium | High |
| Build time | 1–2 hours | 4–5 hours | None (already built) |
| Custom style options | High | High | Low/Fixed |
| Maintenance | Low | Medium | Medium to High |
| Weight | Heavy (won’t blow away) | Light–Medium | Light |
A cinder block bench may be the easiest mix of durability and style—especially for beginners!
FAQs
1. How many cinder blocks do I need for a bench?
Most projects use 6 to 8 blocks, depending on the height and design you want.
2. What wood is best for a cinder block bench?
4×4 pressure-treated wood is common. Other choices include Douglas fir or cedar for weather resistance.
3. Can I paint or stain my wood planks?
Yes, you can! Just make sure to use outdoor-safe paints or stains.
4. Is construction adhesive required?
Not always. But using it can add extra safety, especially for high-traffic areas or kids.
5. Can I move a cinder block bench once it’s built?
It can be moved, but it’s heavy. If you need to move it, take it apart first.
6. How long does it last outdoors?
With good materials and care, your cinder block bench can last 10 years or more!
Conclusion:
A cinder block bench is the perfect DIY project—simple, fun, and full of personality. It looks great in any backyard or garden. Best of all, you can build it in one afternoon and enjoy it for years to come.
Whether you’re looking for a cozy corner to read, a place to watch the kids play, or just an easy way to add seating to your space, this bench delivers on all fronts.
