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Outdoor Sofa Sectional Piece


Ana White
Ana White
Ana White
Ana White

This Outdoor Sofa Sectional Piece is a great way to expand your already existing Outdoor Couch into the perfect L-Shaped or U-Shaped Sofa!

Outdoor Couch

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  • More Information, Tools, & Materials

    • Project Information

    • Materials Used

      • (5) 2X4 @ 12 FEET LONG - CUT THE 70-1/2" AND 72" LONG PIECES FROM THESE BOARDS
      • (4) 2X4 @ 8 FEET LONG - CUT THE REST OF THE BOARDS FROM THESE BOARDS
      • 2-3/4" SELF TAPPING EXTERIOR DECK SCREWS
      • EXTERIOR GRADE GLUE
  1. Project Steps

    1. Step: 1

      Cut List: (3) 2x4 @ 70-1/2" (10) 2x4 @ 25-1/2" (includes back support) (1) 2x4 @ 12-1/2" (6) 2x4 @ 72" (1) 2x4 @ 70-3/4" (back support--cut to fit)

    2. Step: 2

      Build the seat framing using 2-3/4” screws at all joints, 2 per joint. Recommend using an exterior grade glue. Check seat framing for square by taking diagonal measurements from opposite corners and adjusting until the two diagonals are equal.

    3. Step: 3

      Build one arm using 2-3/4” screws. The center support on edge is flush to the inside and will be used to tie in the seat framing in next step.

    4. Step: 4

      Attach seat framing to arm using 2-3/4” screws. Use at least 8 screws here, more may be needed depending on the strength of your screws. This joint supports the weight of one side of the sofa.

    5. Step: 5

      Add legs on armless side. Make sure the legs are attached square to the seat framing. Use 2-3/4” screws.

    6. Step: 6

      Drill two pocket holes set for 1-1/2” thick material on one end of the back 2x4. Attach to the arm top board with 2-1/2” pocket hole screws. Then attach opposite end of back to top of single back leg with 2-3/4” screws.

    7. Step: 7

      Lay seat boards down on seat and screw down, keeping outside edges flush with approximately 1-1/2” gap in between boards. Screw to all seat framing boards with 2-3/4” screws.

    8. Step: 8

      To add the optional back supports, to the arm, first screw the remaining 25-1/2” long 2x4, inset ¼” from the inside of the arm. Use 2-3/4” screws.

    9. Step: 9

      Measure and cut to fit the back support board. Screw from both the arm, back leg, and top with 2-3/4” screws.

    10. Step: 10

Comments (23)


  • Hi Ana! Love this sectional. We are going to make it and sew our own cushions. What size are your back cushions? Trying to figure out the ideal height of the back cushions. Was thinking maybe 15" high. What do you think would be ideal?
    By stabuks, on June 8, 2015

  • nice job. enjoy your sectional
    By maga, on June 28, 2015

  • nice job. enjoy your sectional
    By maga, on June 28, 2015

  • Where did you find the cushions?
    By clcoup, on June 29, 2015

  • After building this project, I've noticed the following points: There is one piece of wood missing from the cut list. I had a couple of extra 2x4's so wasn't that put out by it, but others may be affected. This plan is designed to coordinate with the Outdoor Sofa, but the plans are subtly different - the Outdoor Sofa does not have the back supports included (the wood that is placed on edge under the two arm rests and back), so if building both pieces, you'll want to allow for the extra stock necessary to include those three extra pieces. In order to build both pieces, I purchased thirty 8' 2x4's, knowing that I would have lots of offcuts remaining. I intend to use these offcuts to build a coffee table/footrest that will accommodate the last seat cushion (since I purchased seven 2pc cushions to fill in all the sections of back rest), and also frame a water table for my child. I purchased these: http://www.lowes.ca/outdoor-cushions/garden-treasures-blue-flame-stitch-2-piece-deep-seating-patio-chair-cushion_g2384797.html
    By woodchip, on July 2, 2015

  • It looks very nice but what would make it better is if all exposed edges were rounded over with a router and the back had an angle to it. Yours looks nice and comfortable.
    By Newbiewoodman, on September 9, 2015

  • Where did you get your cushions from?
    By Jnmartin, on April 25, 2016

  • How many 2x4's are needed to purchase for both pieces, the couch and sectional part?
    By Warden5, on April 27, 2016

  • Will you please email me a copy of the sectional sofa plans. the measurements are not clear on the diagrams
    By mwtrdh, on April 28, 2016
    • or can you attach a link so that i can print it?
      By mwtrdh, on April 28, 2016

  • How many 2x4 are needed for both projects?
    By Slim Pickens, on May 28, 2016

  • How many 2x4's are needed to do both sofas? And are there plans for the other sofa? Please help!!!
    By Doubleh, on June 1, 2016

  • Hi I never worked with imperial measure... can you make it with metric measures? great job great project of yours congrats...i love it
    By fraque, on June 2, 2016

  • Do you recommend pre drilling a "guiding holes" for the screws, or can i skip it when using these type of screws you menttiom (exterior decking screws) Thanks!
    By gold76, on July 3, 2016

  • that was a waste of paper and ink will not let me print
    By luckydoglj_126876, on September 21, 2016

  • Do you recommend predrilling guide holes or simply use these deck screws straight?
    By gold76, on April 3, 2017

  • It is not allowing me to print out all the steps. Can you send me a link with all of the steps?
    By kmangrich, on June 2, 2017

  • Great project, I'm in the process of building one :) There's on piece missing from the list. It is (1) 2*4 @ 28"
    By salkhudri, on June 18, 2017

  • Unable to see the page or the plans. Is there a way to fix this? I'm very interested in trying to make this amazing sectional.
    By kioko_1992, on February 11, 2018
    • To the right of the picture above click on the link to the outdoor couch
      By gsnpbc, on May 29, 2018

  • How do you prevent it from rotting, termite... and other damages might be caused by weather and bugs since it stays outside? 
    By Kevin-Nguyen, on May 31, 2018

  • You can make this entire project using 2x4x8 if you make it exactly 2 inches smaller from front to back, which only makes 2 differences in cuts, instead of 25 1/2 they become 23 1/2, and instead of 28 1/2, they become 26 1/2, everything else remains the same, but you can use exclusively 2x4x8's with a total quantity of (21) 8 footers!  Cuts the cost nearly in half and allows for more choices for straighter and more perfect boards. In case this helps anyone! 
    By smkirk8588, on June 24, 2018

  • Ana,
    My 5 years old daughter is a great fan of yours. Thanks for inspiring her and everyone.

    Love and respect from Tampa, FL.
    By Rakesh Kumar Gupta, on May 11, 2019

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Outdoor Sofa Sectional Piece

by Ana White
May 28, 2015

This Outdoor Sofa Sectional Piece is a great way to expand your already existing <a href="https://www.ryobitools.com/nation/projects/2651" target="_blank">Outdoor Couch</a> into the perfect L-Shaped or U-Shaped Sofa! <a href="https://www.ryobitools.com/nation/projects/2651" target="_blank">Outdoor Couch</a>

Project Steps

  1. Step: 1

    Cut List: (3) 2x4 @ 70-1/2" (10) 2x4 @ 25-1/2" (includes back support) (1) 2x4 @ 12-1/2" (6) 2x4 @ 72" (1) 2x4 @ 70-3/4" (back support--cut to fit)

  2. Step: 2

    Build the seat framing using 2-3/4” screws at all joints, 2 per joint. Recommend using an exterior grade glue. Check seat framing for square by taking diagonal measurements from opposite corners and adjusting until the two diagonals are equal.

  3. Step: 3

    Build one arm using 2-3/4” screws. The center support on edge is flush to the inside and will be used to tie in the seat framing in next step.

  4. Step: 4

    Attach seat framing to arm using 2-3/4” screws. Use at least 8 screws here, more may be needed depending on the strength of your screws. This joint supports the weight of one side of the sofa.

  5. Step: 5

    Add legs on armless side. Make sure the legs are attached square to the seat framing. Use 2-3/4” screws.

  6. Step: 6

    Drill two pocket holes set for 1-1/2” thick material on one end of the back 2x4. Attach to the arm top board with 2-1/2” pocket hole screws. Then attach opposite end of back to top of single back leg with 2-3/4” screws.

  7. Step: 7

    Lay seat boards down on seat and screw down, keeping outside edges flush with approximately 1-1/2” gap in between boards. Screw to all seat framing boards with 2-3/4” screws.

  8. Step: 8

    To add the optional back supports, to the arm, first screw the remaining 25-1/2” long 2x4, inset ¼” from the inside of the arm. Use 2-3/4” screws.

  9. Step: 9

    Measure and cut to fit the back support board. Screw from both the arm, back leg, and top with 2-3/4” screws.

  10. Step: 10