Platform Outdoor Sectional

Step 1

Build the base as shown above. I built mine with pocket holes (1 1/2" setting and 2 1/2" pocket hole screws) but you could also countersink 2 1/2" self tapping exterior screws. use glue and adjust for square when done. NOTE: Pocket hole users may wish to also drill holes facing upward for attaching boards in next step - it's up to you.

Step 2

Attach decking boards starting at back and working inward. Leave 1/2" gap in between.

Step 3

Then attach 2x2s to the top using 1 1/2" pocket hole and 2 1/2" pocket hole screw with glue.

Step 4

Attach back base board to both 2x2 and 2x6 decking.

Step 5

Split the difference and attach center back boards.

NOTE: We felt that our back was plenty sturdy, but if you have concerns about the open end of the sectional not being sturdy enough for your use, I recommend adding a metal L bracket on the inside. This will further secure the back.

Finishing

Sand all surfaces, starting with a medium grit and finishing with fine. Wipe off the dust, fill any holes or gaps with wood filler, and sand smooth once dry. Apply primer if you're painting, then finish with your choice of paint or stain and seal with a durable clear topcoat. For outdoor projects, use exterior-rated primer, paint or stain, and sealer so the piece stands up to the weather.