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How to Create a Resin Shed Base

By Bob Haring ; Updated September 21, 2017

A resin shed is made of plastic material. Resin sheds typically are sold as kits, for a buyer to erect in his yard. They are durable and easy to build. They are light and do not require foundations, but they must be set on a solid base. There are several ways to build a base, but any base must be level, dry and square. Start any base construction by marking corners with stakes and twine and squaring the outline with corner-to-corner measurements using a tape measure. Adjust stakes until the diagonals are the same and the base is square.

Step 1

Build a concrete base by excavating the area at least 6 inches deep with a shovel. Frame the outline with 2-by-6-inch boards held in place with stakes. Lay 2 inches of medium gravel in the form, compact it solidly with a hand tamper and fill the form with concrete. Level the concrete by dragging a long board across it and finish it with a smoothing trowel. Let it cure for a week before erecting the resin shed.

Step 2

Use large square concrete blocks to make a base. Dig out the area about 6 inches deep. Cover the ground with a plastic membrane. Spread a layer of compacted gravel over the membrane and top it with about 2 inches of sand. Set square concrete blocks, 2 or 4 inches thick, in the base, with edges touching. Level the blocks with a level; adjust the sand to get blocks even. Sweep sand into the joints between blocks with a broom to secure them.

Step 3

Make a base with plastic squares. Buy interlocking plastic grid blocks to fit the resin shed base dimensions. Level the ground in the base, cover it with plastic membrane and spread a layer of fine gravel over the membrane. Set the blocks in place, locking them together at joints. Cut blocks with a circular or reciprocal saw as needed to fit.

Step 4

Fill a base with compacted gravel. Dig out the area 6 to 8 inches deep, smooth and roughly level it with a rake and spread a plastic membrane over it. Lay down gravel, starting with a layer of medium gravel 4 to 6 inches deep. Compact it solidly with a hand tamper. Add 2 inches of fine gravel and compact it firmly. Set the resin shed floor directly on the gravel.


Things You Will Need

  • Stakes
  • Twine
  • Tape measure
  • Shovel
  • 2-by-6-inch boards
  • Gravel, varying sizes
  • Hand tamper
  • Concrete
  • Long board
  • Mason's trowel
  • Plastic or similar membrane
  • Square concrete blocks
  • Sand
  • Broom
  • Plastic grid blocks
  • Circular or reciprocal saw


  • Size the base to the dimensions of the shed, following the shed manufacturer's instructions; typically you'll want to make the base a couple of inches larger than the shed floor.
  • Locate the shed in an area with good drainage and no large trees, utility lines or other impediments.

About the Author


Bob Haring has been a news writer and editor for more than 50 years, mostly with the Associated Press and then as executive editor of the Tulsa, Okla. "World." Since retiring he has written freelance stories and a weekly computer security column. Haring holds a Bachelor of Journalism from the University of Missouri.