8 x 12 Storage Shed Plan

Introduction

With 106 square feet of storage space, this storage shed will fit into space where one side is narrow and the other generous. The double doors make loading and unloading easy, and two vents in the gable end provide good airflow for yard and garage chemicals and equipment.
This private and secure shed frees up your garage and basement given its easy loading access. It will hold tall, long and wide equipment as easily as it will keep boxed items dry and easy to access. It's also easy to run wires through its 2x4 walls for lights and outlets.

Materials you’ll need

  • Concrete
  • Bricks
  • Pressure-Treated Lumber
  • Pressure-Treated Board
  • Plywood
  • Building paper
  • Asphalt shingles
  • Wood siding boards
  • Door hinges
  • Door Pulls
  • Surface Bolts
  • Galvanized nails
  • Wood screws

Step 1 – Foundation Preparation

1.1 Clear the area where you want to build the shed and layout for the foundation. Use the below illustration as a guide.

1.2 For the foundation, dig the trenches at least 1′ wide and 1′ deep.

1.3 Fill the trenches to ground level with concrete and let cure, or harden. Since curing times vary between brands, read the packaging for recommended curing times.

1.4 Once the concrete has cured, use standard-sized bricks and lay them across the foundation. You will need roughly 135 bricks for this step.

8x12 gable storage shed foundation preparation

Step 2 – Framing The Floor

2.1 Make the floor joists using 1 1/2″ x 7 1/4″ pressure-treated lumber.

2.2 Attach the joists with 8×5″ Phillips flat head wood screws.

2.3 Check the corners to make sure they are 90°.

8x12 gable storage shed floor framing

Step 3 – Assemble Front Wall Frame

3.1 Use1 1/2″ x 3 1/2″ and 3 1/2″ x 3 1/2″ treated lumber to construct the front wall frame using the drawing below as a reference. You will need three boards cut to 11″ to use as the cripple studs, one board cut to 5′-4″ for the door header, ten boards cut to 6′-11″ for the wall studs, two boards cut to 3′-4″ for the bottom plates and one board cut to 12′ to use as the top plate.

3.2 Attach the beams with 2×4″ Phillips flat head wood screws.

3.3 Check the corners to make sure they are 90° so that the building will be square when finished.

8x12 gable storage shed front wall framing

Step 4 – Assemble Back Wall Frame

4.1 Use 1 1/2″ x 3 1/2″ and 3 1/2″ x 3 1/2″ treated lumber to make the back wall frame using the drawing below as a reference. You will need ten boards cut to 6′-11″ for the studs and two boards cut to 12′ for the top and bottom plates.

4.2 Fasten the beams with 2×4″ Phillips flat head wood screws.

4.3 Use the square of your choice to check the corners to make sure they are 90°.

8x12 gable storage shed back wall framing

Step 5 – Assemble Left and Right Wall Frames

5.1 Using 1 1/2″ x 3 1/2″ pressure-treated lumber, construct the wall frames using the drawing below as a tool. You will need seven boards for the wall studs and two boards to make the top and bottom plates.

5.2 Join the beams with 2×4″ flat head Phillips wood screws.

5.3 Be sure that the corners are 90° using a square of your choice.

8x12 gable storage shed side walls framing

Step 6 – Assemble the Roof Frame

6.1 Use 1 1/2″ x 5 1/2″ treated lumber to cut 20 rafters 5′-10 1/4″ long according to the dimensions.

6.2 Use 1 1/2″ x 3 1/2″ treated lumber to cut collar ties 5′-11 3/4″ long according to the dimensions.

6.3 Use 3/4″ x 7 1/4″ treated wood to cut the ridge board according to the drawing below.

6.4 Connect the beams with 2×3″ flat head Phillips wood screws.

8x12 gable storage shed roof framing

Step 7 – Assemble and Install Shed Doors

7.1 Build the door frames for the shed using 1 1/2″ x 3 1/2″ treated lumber and secure with 5″ flat head wood screws. You will need two boards for the vertical girts and two boards for the horizontal girts.

7.2 Cut two doors from the 9/16″ plywood sheet according to the drawing.

7.3 Use 2 1/2″ x 3/4″ treated lumber to make the door trim and fasten with 2″ Phillips flat head wood screws. You will need two boards cut to 2′-2 3/4″ and two boards cut to 5′-11 3/4″.

7.4 Using 1/4″ x 3/4″ treated lumber, cut and install a starter course 2′-2 3/4″ long.

7.5 Use 1/2″ x 6″ wood siding boards for the door and the illustration below as a reference.

7.6 Assemble siding shields with galvanized nails.

7.7 Install door hinges using 6×1″ wood screws. Finish the door installation by attaching surface bolts and door pulls.

8x12 gable storage shed door

Step 8 – Roof Sheathing Installation

8.1 This storage shed requires 160 Sq Ft of asphalt shingle roofing.

8.2 Add the metal drip edge to the fascias.

8.3 Cover the plywood with roofing paper.

8.4 Install asphalt shingle roofing using an industrial stapler or use a hammer with roofing nails.

8x12 gable storage shed roof sheathing

Step 9 – Decorate the Shed

Once you’ve finished building the garden shed, paint it or apply an exterior finish immediately. Use exterior paint, stain, or a wood preservative to prevent moisture damage to the shed.
8x12 gable storage shed

Download Printable PDF Straight To Your Inbox!

Enter your details below and download the extended version of this plan.

8x12 storage shed plan