DIY Outdoor Sectional Sofa Tutorial and Building Plan

8 Materials
2 Days

Looking for an affordable outdoor seating option? You can build your own sectional sofa on a budget! It only takes a few materials. Add cushions and pillows to dress it up and then enjoy your conversation piece.
Watch our video tutorial for instructions! We offer tips and tricks and make the process go smoothly for you.
Start by measuring and cutting your plywood according to the free, printable, building plans on our blog.
Drill pocket holes and cut notches for the supports in the pieces for the base frame.
Cut and glue the support beam, then use screws to attach. Drill pocket hole screws, then cut and attach middle support.
Attach base frame using pocket hole screws. Then add support beam.
Glue and screw plywood seat pieces together. Then, attach seat to frame with pocket hole screws.
Now it's time to attach the back. Glue, clamp, and screw the back to the seat pieces. Glue on side pieces.
While the sides are drying, add blocking and attach 1/4 backing to bottom of bench. This helps to keep out those pesky flying critters.
Fill holes and when dry, sand your masterpiece. You can stain, paint, or finish as you desire.
Enjoy your new place to relax and entertain!
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Want more details about this and other DIY projects? Check out my blog post!


Have a question about this project?

3 of 4 questions
  • LibraryKAT
    on May 15, 2018

    Looks really nice! You did a good job, your photos and directions are easy to understand. :-). Did you consider an additional support under the longer bench? Plywood will eventually bend with weight and use; our plywood bookshelves did after some months. I could flip the shelves but you can't flip a sofa! Thanks for sharing.

  • Maria
    on Jul 15, 2018

    Any suggestions to protect the wood against sun and rain? These two cause mayor issues even with any wooden in Florida, even tested fences.

    • Debbie Paul Child
      on Aug 6, 2018

      Use the polyurethane for,outside. Put several coats on it. You can put it over paint and actually anything that is painted outside. It will last at least 5 years before you might get chips or have to repaint it. Depending on how many coats you put on it. I usually take my time and do at least six with light sanding between coats so the next layer will stick to the previous coat. Let dry at least 4 hrs between coats. It takes awhile but well worth it.

  • Tam43063448
    on Jun 12, 2019

    Do you have plans for an indoor sectional?

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