How to Lay Out a 10X10 Plywood Floor for a Shed

Written by john walker
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How to Lay Out a 10X10 Plywood Floor for a Shed
Most exterior sheds are relatively small, allowing for simple construction of the floors. (Jupiterimages/Polka Dot/Getty Images)

Ideal flooring options for sheds involve a type of floor that is mobile in case the shed needs to be relocated. But it still needs to be stable and sturdy. A wood floor using treated lumber and plywood offers the stability without the permanence of cement slabs. Building a 10-foot by 10-foot wood floor for a storage shed requires building a frame similar to the joists and studs used in housing. The flooring rests directly on top of cement blocks to elevate the shed off of the ground slightly.

Skill level:

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Things you need

  • 10 wood beams, 2-inches by 6-inches by 10-feet
  • 4 3/4-inch plywood sheets, 4-feet wide by 8-feet long
  • Measuring tape
  • Circular saw
  • 3-inch self-tapping, exterior wood screws
  • Drill
  • Screwdriver drill bit

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  1. 1

    Measure and cut two 2-inch by 6-inch beams to 10-feet long with a circular saw. Cut eight 2-inch by 6-inch beams to 9-feet and 9-inches in length.

  2. 2

    Assemble the basic frame with the 10-foot beams running horizontally and the 9-foot 9-inch beams running vertically between the two 10-foot beams.

  3. 3

    Attach the first and last 9-foot 9-inch beams so that the edges of the beams are flush with the ends of the 10-foot beams and the 6-inch sides stand straight up for all the beams. Drive two 3-inch, self-tapping, exterior grade wood screws through the exterior edge of the 10-foot beams into the ends of the shorter beams with a drill and screwdriver drill bit, creating a basic box.

  4. 4

    Make a vertical line mark every 16 inches from one end of the box on each of the 10-foot beams, creating pairs of marks. The result will be 7 pairs of marks with the last pair sitting 8-inches from the end.

  5. 5

    Attach the 9-foot 9-inch beams to the pairs of marks with two 3-inch screws drilled into each end to complete the frame.

  6. 6

    Lay out sheets of plywood so that the ends of the plywood sit on top of vertical beams. Eight-foot sheets will be the best fit working from one side. Cut additional sheets with a circular saw to 2-feet to fit the remaining exposed section.

  7. 7

    Attach the plywood sheets to the frame with 3-inch screws spaced 8 inches along each vertical and horizontal beam.

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