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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

      Large 3a2420c5 2de9 4205 850a 8a58451dba70

      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

      Large b61a34c7 fb6b 4570 963a 7f818d6d1aad

      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

      Large f3927785 98fb 4b80 afc5 1f3018d921aa

      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

      Large 065e9a94 620c 4964 845a dc8a1fe63284

      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

      Large f228b481 e905 4852 a427 86c0ad6aefff

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

    6. Step: 6

      Large b602bd55 b14a 4822 b8aa ec3645815450

      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

      Large 470eb8cd 632e 48c8 97d3 6ec42c238eac

      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

      Large 56d48148 27e7 4803 acdc 981d59b50eff

      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

      Large adcf6eb6 be42 48e3 98ea e841202069a5

      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

      Large f9ceda9d 4154 4bfb 89eb f64564bdf215

Comments (22)


  • 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

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Outdoor Sofa Sectional Piece

by Ana White
May 28, 2015
Medium b2bd6a58 f7ba 4d8f 977c 47eecf1be70a

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
    Huge 3a2420c5 2de9 4205 850a 8a58451dba70

    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
    Huge b61a34c7 fb6b 4570 963a 7f818d6d1aad

    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
    Huge f3927785 98fb 4b80 afc5 1f3018d921aa

    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
    Huge 065e9a94 620c 4964 845a dc8a1fe63284

    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
    Huge f228b481 e905 4852 a427 86c0ad6aefff

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

  6. Step: 6
    Huge b602bd55 b14a 4822 b8aa ec3645815450

    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
    Huge 470eb8cd 632e 48c8 97d3 6ec42c238eac

    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
    Huge 56d48148 27e7 4803 acdc 981d59b50eff

    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
    Huge adcf6eb6 be42 48e3 98ea e841202069a5

    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
    Huge f9ceda9d 4154 4bfb 89eb f64564bdf215