12 x 16 She Shed Plan

Introduction

The 12’x16’ Lean-To She-Shed plan is a simple step by step application for construction and design. A detailed material list is included with the plan that displays all of the construction materials required for the project. The plan utilizes 3-D illustrations with accurate measurements for each section. Every section goes into more detail with step-by-step instructions that the average DIY enthusiast can read and understand.
The plan is designed in order from start to finish. It clearly lays out the site preparation as well as the construction of the sub-floor, walls, roof, doors, windows, gutters, shutters, and access ramp. Drawings and pictures of the finished product for each step are included with the plan. The plan displays accurate measurements that provide a good viewpoint of the completed section.
Fastening applications and the correct nail and screw size are also listed for each application and section. The plan is designed with asphalt shingles; however, it offers flexibility for different roofing materials like rubber or metal.

The 12’x16’ Lean-To She-Shed offers a spacious 192sqft of floor space with an 8ft ceiling and plenty of storage options. The back wall is the perfect place for a variety of shelving or even a great place to build a workbench. There’s plenty of room for pegboards, hooks for garden tools, lawn equipment, and recreational vehicles. The shed utilizes the left and right walls for custom-built windows that allow for fresh air circulation.
The shed is engineered to be solid and has years of durability in any weather climate. Asphalt shingles provide protection against leakage, and the gutter system is designed to drain the water to the ends of the shed, eliminating heavy water flow over the access doors. The shed can be painted in any color; however, the suggested pink color is what makes this an authentic She-Shed.

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 foot wide and 1 foot 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 225 bricks for this step.
12x16 lean to garden shed foundation preparation

Step 2 – Framing The Floor

2.1 Assemble the frame using 1 1/2″ x 7 1/4″ pressure-treated lumber. You will need two boards cut to 16′ that will be the rim joist and two boards cut to 11′-9″ that will be the joist.

2.2 Secure the beams with 8×5″ wood screws.

2.3 Using a speed square or carpenter’s square, check the corners to make sure they are 90°.
12x16 lean to garden shed floor framing

Step 3 – Assemble Front Wall Frame

3.1 Using 1 1/2″ x 3 1/2″ and 3 1/2″ x 3 1/2″ pressure-treated lumber, construct front wall frame using the drawing below as a reference. You will need ten boards cut to 7′-3″ that will be studs, two boards cut to 5-4″ that will be the bottom plates, one board cut to 16′ that will be the top plate, one board cut to 5′-4″ that will be the door header, three boards cut to 1′-1″ that will be cripple studs.

3.2 Connect the beams with 2×3″ and 2×5″wood screws.

3.3 Using a speed square or carpenter’s square, check the corners to make sure they are 90°.
12x16 lean to garden shed front wall framing

Step 4 – Assemble Back Wall Frame

4.1 Using 1 1/2″ x 3 1/2″ and 3 1/2″ x 3 1/2″ pressure-treated lumber, construct back wall frame using the drawing below as a reference. You will need thirteen boards cut to 8′-3″ that will be the studs and two boards cut to 16′ that will be the top and bottom plates.

4.2 Connect the beams with 2×3″ wood screws.

4.3 Using a speed square or carpenter’s square, check the corners to make sure they are 90°.
12x16 lean to garden shed back wall framing

Step 5 – Assemble Side Wall Frames

5.1 Using 1 1/2″ x 3 1/2″ pressure-treated lumber, construct side wall frames using the drawing below as a reference. You will need two boards cut to 11″ that will be the cripple studs, two boards cut to 2′-9″ and eight boards cut to 7′-3″ that will be the studs, two boards cut to 3′-4″ that will be the window header and rough sill and two boards cut to 11′-5″ that will be the top and bottom plates.

5.2 Connect the beams with 2×3″ wood screws.

5.3 Using a speed square or carpenter’s square, check the corners to make sure they are 90°.
12x16 lean to garden shed side walls framing

Step 6 – Assemble The Roof Frame

6.1 Using 1 1/2″ x 5 1/2″ pressure-treated lumber, cut thirteen rafters 13′-3 1/4″ long according to the dimensions in drawing below. Cut the recesses in each beam for splicing connection with wall frames.

6.2 Connect the beams with a top frame with the help of 3″ wood screws.
12x16 lean to garden shed roof sheathing installation

Step 7 – Assemble and Install Shed’s Door

7.1 Build the door frames for the shed using 1 1/2″ x 3 1/2″ pressure-treated lumber and secure with 5″ wood screws. You will need two boards cut to 5′-11 3/4″ that will be the vertical girts and two boards cut to 2′-3/4″ that will be the horizontal girts.

7.2 Prepare the 9/16″ plywood sheet with dimensions 2′-7 3/4″ x 5′-11 3/4″ for the doors according to the drawing.

7.3 Use 2 1/2″ x 3/4″ pressure-treated lumber for the door trim and fasten with 2″ 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″ pressure-treated lumber, cut and install a starter course 2′-2 3/4″ long.

7.5 For the exterior siding on the door, use 1/2″ x 6″ wood siding boards and the illustration below as a reference.

7.6 Assemble siding shields with 2″ galvanized nails.

7.7 Install six 3″ door hinges using 6×1″ wood screws. Finish the installation of the doors by attaching 4″ surface bolts and 6″ door pulls.
12x16 lean to garden shed door

Step 8 – Roof Sheathing Installation

8.1 You will need 235 Sq Ft of asphalt shingle roofing.

8.2 Add the metal drip edge to the fascias.

8.3 Cover the plywood with building paper.

8.4 Install asphalt shingle roofing using an industrial stapler.
12x16 lean to garden shed roof sheathing installation

Step 9 – Assemble and Install Door Ramp

9.1 Assemble the 5 door ramp frames from pressure-treated lumber and secure with 3″ and 5″ wood screws (node K on page 29). For each frame you will need one 1 1/2″ x 1 1/2″ board cut to 1′-8″; one 1 1/2″ x 2 1/2″ board cut to 3′-3/4″ and one 1 1/2″ x 3 1/2″ board cut to 6 1/4″.

9.2 Connect and secure all frames using one 1 1/2″ x 2 1/2″ board 5′-9″ long and 3″ wood screws.

9.3 Cut the 9/16″ plywood sheet with dimensions 3′-3/4″ x 5′-9″ for the top plane and two sheets with dimensions 9 1/4″ x 2′-9 1/2″ for the sides.

9.4 Assemble siding shields with 2″ galvanized nails.
12x16 lean to garden shed door ramp installation

Step 10 – Window Installation for Side Walls

It is necessary to prepare 2 windows.

10.1 Using 1 1/2″ x 2 1/2″ pressure-treated lumber, assemble the outer frame for the window as shown in the drawing below. You will need two boards cut to 3′-1″ that will be the vertical girts and two boards cut to 3′-4″ that will be the horizontal girts. Additionally, add vertical 2′-11 1/2″ long and horizontal 3′-1″ long supports using 3/4″ x 1″ lumber and cut the recesses for the window hinges.

10.2 Use 1 1/2″ x 1 1/2″ pressure-treated material to make the inner frame and secure with 3″ wood screws. You will need two boards cut to 2′-9 3/4″ that will be the vertical girts and two boards cut to 3′-3/4″ that will be the horizontal girts. Mill a recess for the glass panes and for the hinges.

10.3 Use 1 1/4″ x 1 1/2″ pressure-treated material to make the inner frame supports and secure with 3″ wood screws. You will need two boards cut to 2′-9 3/4″ and mill a recess for interconnection.

10.4 Prepare and install glass into inner frame groove and fasten it by window beading from four sides. Use 1/2″ galvanized nails.

10.5 Install two hinges 3″ with 6×1″ wood screws and assemble the window. Install a lock on the inner side of the window.
12x16 lean to garden shed window

Step 11 – Assemble and Install Window Shutters

It is necessary to prepare 4 windows shutters.

11.1 Assemble frames using 3/4″ x 1 1/2″ pressure-treated lumber and secure with 3″ wood screws. You will need one board cut to 1′-4 3/4″ two boards cut to 3′-3/4″ that will be the vertical girts and two boards cut to 1′-7 3/4″ that will be the horizontal girts.

11.2 Mill a recess along the vertical girts for the jalousies.

11.3 Use 1/4″ x 1 1/2″ pressure-treated lumber for the jalousies. You will need twenty-two boards cut to 1′-5 3/4″.

11.4 Install two 3″ door hinges using 6×1″ wood screws.
12x16 lean to garden shed decorative window shutters assembly

Step 12 – Install Decorative Door Shutters

It is necessary to prepare two decorative door shutters.

12.1 Assemble front frame using 1 1/2″ x 1 1/2″ pressure-treated lumber and secure with 3″ wood screws. You will need two boards cut to 6′-7″ that will be the vertical girts and two boards cut to 1′-5 1/2″ that will be the horizontal girts.

12.2 Assemble back frame using 3/4″ x 2 1/2″ pressure-treated lumber and secure with 5″ wood screws. You will need two boards cut to 6′-7″ that will be the vertical girts and two boards cut to 1′-3 1/2″ that will be the horizontal girts.

12.3 Use 3/4″ x 3/4″ pressure-treated lumber for the lattice. You will need thirty six boards cut to 2′-3/4″. Assemble according to the drawing.
12x16 lean to garden shed decorative door shutters assembly

Step 13 – Assemble Roof Drainage System

13.1 Assemble roof drainage system on the front fascia board. You will need 5″ half round gutter 12′-7″ long, two end pieces with the outlet, six 45° elbows, two 3″ pipes 6′ long, two joint connectors and two end caps.

13.2 Fasten the round gutter to the fascia with the round fits of hunger.

13.3 Fasten the vertical pipe section with the four wall fasteners.
12x16 lean to garden shed roof drainage system assembly

Step 14 – Decorate the Shed

Now that you’ve finished the shed, you are ready to paint it or finish with a wood stain or preservative.
12x16 lean to garden shed

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12x16 lean to garden shed plan

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