DIY Outdoor Wood Bench

updated Apr 30, 2019
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(Image credit: DIY Candy)

This is a little labor intensive, but the result is beautiful. If you’re interested in a bit of a challenge and want to revamp your outdoor space on a budget, give this gorgeous bench a try!

Skill Level: Moderate
Time Required: A few hours
Project Cost: $35 for supplies

(Image credit: Submitted by Amy)
(Image credit: Submitted by Amy)

What You Need


  • Regular 2 x 4s – pine, not pressure treated (you may want to use pressure treated wood if your bench is going to be exposed to the elements, though it is more expensive)
  • Exterior grade Liquid Nails (or other construction adhesive made for wood)
  • Bar clamps
  • Thompsons water seal and stain (Nutmeg)


  • Paintbrush
  • Rag
  • Table saw
  • T square – or something to make sure edges are square
  • Hand held belt sander with a 80-grit and 120-grit
  • Sanding blocks – 80-grit and 120-grit
  • Surface protection – cardboard box, tarp, etc
  • Optional – drill and four feet if you don’t want the bench to touch the patio or ground directly

Cut List

You might notice that the measurements don’t quite add up – this is because the ends were milled off and sanded to get the resulting finished size bench.

  • 33.5″ long (five pieces)
  • 40″ long (four pieces)
  • 16″ long (ten pieces)
  • 12.75″ long (eight pieces)
(Image credit: Submitted by Amy)
(Image credit: Submitted by Amy)


  1. Do this before you cut your pieces down to size. Using the table saw, “mill” the 2″ edges of every piece of wood so that you get a very square edge (as opposed to the rounded edges that come on a 2×4). This will give your bench a more modern look. You can also use a planer to create perfectly parallel faces on your wood. Wood purchased from the hardware store is hardly ever even, hence the need to cut it down as Steve has done.
  2. Cut the pieces of wood according to the cut list above. Keep in mind, these measurements produced a finished bench that is 16″ high x 40″ long x 13.5″ deep . . . AND a little extra was left for the milling and sanding process. If you want to customize the size of your bench, you’ll need to adjust these cut lengths.
  3. You’re going to use your pieces of wood to essentially create a box joint – and this is kind of like a puzzle (Jenga?). So try to follow me as I describe it! You’ll need to have your box clamps on hand and ready, along with the Liquid Nails.
  4. Place a 40″ piece of wood on the ground, with a 33.5″ piece in the center. On each end, you’ll place a 16″ long piece perpendicular to the other two pieces, as shown in the photo above. Make sure everything is even and as flush as possible (and use a t-square or other item if necessary to for a right angle), then glue into place and clamp.
  5. These additional photos show you what you’ll be doing. You’ll be adding Liquid Nails to the wood, setting it up in your pattern as shown, then adding clamps to hold it together. Remember that you’re doing a modified box joint, so you’ll have one long piece of wood, then one short piece, then long, then short, and so on.

Your best bet is to follow this process:

  • Organize the pieces of wood without gluing FIRST so that you understand how the bench goes together;
  • Begin at one end of your bench and start assembling with the Liquid Nails, using the clamps as placeholders as you go along;
  • Continue add Liquid Nails, wood, and increase the size of your box clamps until the bench is fully assembled
  • It’s seriously way easier than it sounds – and doesn’t take long to do once you get into your rhythm!

6. Once your bench is fully assembled as shown, keep it clamped and let it dry overnight. You’ll see that some of the edges aren’t even, but we’re going to remedy that!
7. Undo the clamps and sand with the belt sander to get everything even. Don’t forget to sand with the grain! Sand until it’s completely smooth and flat. Do this on the legs, too. Then wipe away all of the sanding dust. If your bench needs quite a bit of even-ing out, start with the 80-grit and finish with the 120-grit.
8. Use your stain to paint your bench. Applying stain is relatively easy. You can use a brush, paint it on, then wipe it off. You can read the instructions on your container to make sure you are following the process for that particular stain. Some people even apply stain with a rag and then wipe it off with a second rag to get a look they like. Note: Steve used two coats of stain and the stain lifted the grain of the wood slightly so that it doesn’t feel 100% smooth as it did right after sanding. To prevent this, you’ll probably want to apply a coat of stain, then sand with 120-grit, then stain again. Our stain was outdoor stain AND sealer, and our project is currently under a porch covering (though it is exposed to the elements). Depending on how much your bench will see sunlight and rain, you’ll likely want to make the final project a little tougher with some hard core polyurethane.

9. This step is completely optional. Our bench is sitting near ground and with the amount of bugs we have in the south, we wanted it a little raised up off of the ground. Steve purchased furniture feet, drilled holes in the legs, then inserted. It’s very easy.

And that’s it!

You can see more on Amy’s blog DIY Candy.

Thanks, Amy!

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