DIY Outdoor Couch

Our sunroom really needed some cute outdoor furniture, so I came up with plans to build a DIY outdoor couch! This was my first piece of DIY outdoor furniture that I’ve built and I love it!

DIY outdoor couch

I love how our outdoor couch turned out and I’m excited to share the step by step tutorial! The couch was designed to fit with two sets of these beautiful, outdoor cushions (the Sevilla Replacement Cushions), which I’m loving so far too! Look out for the sales on them, I got them 50% off!

If you use different cushions than the ones above, make sure to adjust the below cut measurements! A reader found these other cushions which are similar in size, and this store has other outdoor cushions to choose from as well, but again measurements would still need some adjusting. Here are a few more cushion options and here as well.

The seat cushions I used are 28.75″ long x 28.75″ wide each. *Make sure to get your cushions first before building in case they go out of stock!

Also, get the FREE printable build plans here for this outdoor couch. *If you have already subscribed, you can find this printable in the Free Printable Library.

One of the best features about this DIY outdoor couch is that it only cost $30 in lumber to build!!! The exterior stain I used was an additional $15, so a total of $45 for me to build it!

I built a matching DIY outdoor chair and DIY outdoor coffee table to go with the couch and complete the set!

Note, this post contains some affiliate links. For more info see my disclosures here.

How to build a DIY Outdoor Couch:

Materials:

Tools:

**If you use different cushions, make sure to adjust the below cut measurements!

The final size of this DIY outdoor couch is 26″ tall x 62 1/2″ wide x 30 1/4″ deep.

Click here to get the free printable build plans

VIDEO TUTORIAL:

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1. Make cuts for outdoor couch frame

Use a miter saw and make the following cuts from the 2x3s:

  • 4 pieces @ 24 1/2″ (for side frames)
  • 2 pieces @ 30 1/4″ (for side frames)
  • 5 pieces @ 57 1/2″ (for back & front frames)
  • 8 pieces @ 27 1/4″ (for side & bottom frames)

Note, if this is your first time building , check out my 6 easy tips for getting started with woodworking!

2. Assemble DIY outdoor couch side frames

Add two pocket holes with the Kreg Jig to each end of two of the 27 1/4″ pieces.

Tip: See my how to use a Kreg Jig post for an easy, step by step tutorial and video tutorial on how to use the Kreg Jig!

add kreg hole to both ends of wood board

Mark 10″ up from the bottom of one of the 24 1/2″ pieces (on the edge of it). Attach one of the 27 1/4″ pieces perpendicularly to the 24 1/2″ piece at the 10″ mark.

Make sure to attach it so the edge of the 27 1/4″ piece is flush with the top edge of the 24 1/2″ piece as shown in the below photo. I used a scrap 1×2 and paint stick underneath of the board to help with this part!

Attach longer boards to shorter boards to start making side couch frames

Then attach the two together with 2 1/2″ Kreg screws. Repeat this process on the other side of the 27 1/4″ piece. Once complete your side frame piece will look like this:

two short boards attached to long board to start forming outdoor couch side frames

Next, attach one of the 30 1/4″ boards to the top of the frame with 2 1/2″ deck screws and so they are countersunk beneath the wood surface (you will fill them with wood filler later).

I forgot to get deck screws, so I just used Kreg screws instead, which works too!

To do this, I used a 3/8″ drill bit and drilled a shallow hole, just deep enough to cover my screw head. Then, I drilled my pilot hole inside of that larger hole with a smaller bit for the Kreg screw. Lastly, I drilled in my Kreg screw to attach the two boards.

drill pilot holes to assemble top of outdoor couch side frames

Repeat on the back of the side frame piece and then your side frame is complete!

Assembled DIY outdoor couch side frames

Repeat the above process to create the second side frame piece for your DIY outdoor couch.

Also, the steps for these side frames are exactly the same as the matching DIY outdoor chair. I created a how to build an outdoor chair VIDEO if you want to see the steps in a video tutorial form!

3. Add side slat boards to side frames

Now it’s time to add the horizontal slat boards to the side frames. This step is totally optional. These slats are more a decorative feature than structural. I think they make the DIY outdoor sofa look really cool and will help prevent throw pillows from falling out the sides!

Measure the exact distance between the two legs of the side frames and cut three 1x3s to this size. The measurements should be close to 27 1/4″ but since we’re working with framing lumber, they will probably be a little different.

Each of my three slats were a little different in size, so make sure to measure exactly where the board is going. The boards should be spaced out 1 3/4″ from each other:

Add side slat boards to side frames

Attach the 1×3 slat boards with a brad nailer and 2″ brad nails.

Add side slat boards to side frames with brad nailer and brad nails

wood side frame with wood slats for DIY outdoor sofa

Repeat the above process for the second side frame.

4. Assemble bottom frame of DIY Outdoor Sofa

Add pocket holes to both ends of the remaining 6 boards @ 27 1/4″ AND to the ends of the 5 boards @ 57 1/2″.

Then use Kreg screws and attach four of the 27 1/4″ boards perpendicularly to two of the 57 1/2″ boards as shown in the below photo. Make sure the 57 1/2″ boards pocket holes are facing the inside.

Space the 27 1/4″ boards about 6″ part and attach the first and fourth board about 14 1/2″ up from the side board ends. Note, you will add the other 2 boards in soon, but not yet so you can easily fit your drill in the space and attach this bottom frame to the side frame in the next step.

attach bottom frame of couch together with kreg screws

5. Attach bottom frame to outdoor couch side frames

Attach the bottom frame to the side frames using 2 1/2″ Kreg screws and 10″ up from the ground (as shown in photo below). It helps to place the side frame flat on the floor and have a second person hold up the bottom frame on top of it.

Attach bottom frame to outdoor couch side frames

Once both side frames have been attached to the bottom frame, go ahead and add the last two 27 1/4″ boards on the bottom frame (from step #4). If it’s difficult to get them in place, use a hammer to tap them in place better.

finish adding in bottom frame boards couch build

6. Add back frame boards to DIY outdoor couch

Turn the outdoor couch on its side and use Kreg screws to attach the remaining three, 57 1/2″ boards to the side frames to create the back frame of the couch (space the boards about 2 3/4″ apart).

Add back frame boards to DIY outdoor couch with drill and kreg holes

Flip your couch back up and your DIY outdoor couch build is finished yay!!!

Back of DIY outdoor couch before staining

Front view of DIY outdoor couch before staining

7. Fill holes, sand, and stain

Fill the 4 screw holes and nail holes in with stainable wood filler. If you haven’t sanded your boards yet (I like to do most of my sanding before starting), go ahead and sand them well.

For tips on sanding wood, check out my easy guide on how to sand wood.

Finish off your project with exterior wood stain! I used Valspar semi transparent exterior stain in Pine bark. It was one of the only exterior stains I could find that came in a quart size and not a gallon size. And it only took one coat!

Check out my tutorial on how to stain wood for a beautiful finish and the best way to apply stain!

After staining, let your couch dry for a full 24 hours, then add the cushions, and enjoy!!!

DIY outdoor furniture an outdoor couch in sunroom

Here’s another angle of it!

DIY outdoor sofa

I loveeee this DIY outdoor couch so much, I’m thrilled with how it turned out and the low cost! In the spring I’d like to build a matching chair set to go with it!! How fun would that be?!

Update: I built a matching DIY patio chair and DIY outdoor coffee table to go with the couch!

So, what do you think of this build? It fits great in small spaces and it has really helped to start transforming our sunroom into an enjoyable, cute, and functional space. Next up, I need some kind of wall art to go above it!

Follow along on my latest projects and sneak peaks on Instagram, YouTube, and Facebook!

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DIY outdoor couch with cushions and without cushions and stain

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94 thoughts on “DIY Outdoor Couch

    1. Curling a lot? Or are they going in a little crooked? Sometimes if you don’t hold the brad nailer at a 90 degree angle and it’s tilted some, it can cause the nail to go in crooked. Actual curling though, I’m not sure as I’ve never seen that before!

      1. How do I adjust the size for different cushions? The ones you recommend are out of stock. The ones I can find are around 24x24x5.75 for the seat and 22.5 tall x 25 wider 6.5 or 24 wide x 22 deep x 6.5

        1. You need to adjust the length and width cuts, not the height cuts, by the difference between the cushions I used and the cushions you use.

    1. Thanks! I don’t know the max but it holds me and my husband (who weighs over 200 lbs) no problem.

  1. Is there any reason you did countersunk holes from the top armrest piece to the side pieces instead of making pocket holes at the top of the side pieces? Just making sure it’s not a stability thing before I start the project!

  2. Very cool! My wife is having me make this today for our deck.

    I’m considering tilting the seating area down by 5° (to prevent the cushion some sliding forward), and angling the back by 10° to 15° to make it more casual.

    Reviewing what you outlined I think this can be accomplished easily on the seating bottom and for the seating back, rotating the boards from horizontal to vertical with a mating support piece at the top.

    Cutting angles complicates the construction and may take it from a 1 to 2 hour to 3 to 4 hours. Either way, looking forward to it.

    1. That’s exciting to hear! Angles are a great idea, but yes they definitely make it more challenging!

  3. Should you use treated would for this project? Or do you add some sort of finish after to protect against moisture and the elements? Looks like regular lumber in the photos.

    1. I would not use treated wood. I used an exterior stain, linked above, to protect the wood. You can also use naturally weather resistant wood like cedar, but it will increase the cost of the project.

  4. I love your DIY couch!! Do you know what changes I should make to the measurements if I am using (2) 24×24 cushions? Thanks!

    1. I’m not sure! The 2x3s are on the heavier side since they are framing lumber. I have to move it with some help.

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