The 12x14 Lean-To Storage Shed plan is a detailed step by step and easy to follow DIY guide. The plan starts off with a material list that contains everything you need to know about the shed and all of the construction materials required to build it. From site preparation to construction, it’s a good visual of what the project entails, and each phase of construction is clearly labeled with accurate information under each section.
The instructional guide starts off with the foundation, which is the first phase of construction. Each step has a numerical order of instructions to complete the phase followed by detailed pictures and measurements for each piece of cut lumber. 3-D illustrations provide a good view of what every section should look like when it’s completed. Each section also has the size and type of hardware like nails and screws required for fastening applications.
At the end of the plan is the last step, which displays the final result of the shed. It provides a stock-color that can be modified to any color and style of asphalt shingle.
The 12x14 Lean-To Storage Shed is a very simple shed to build, and it provides 168sqft of interior floor space with an 8-foot ceiling. The shed provides lots of options for shelving and organizational applications like pegboards and hooks for garden tools. The roof is a simple and low-cost build design on a higher back wall that allows enough pitch for shedding water.
The construction design of the shed is solid with materials that have staying power. The shed utilizes a ramp with double doors that open to 5-feet wide to 6-feet tall that provides enough room for riding lawn mowers, ATVs, and snowmobiles. The shed provides years of durability, a variety of storage solutions, and options for preferred color and shingle application.
Materials you’ll need
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 215 bricks for this step.
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 14′ 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°.
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 4′-4″ that will be the bottom plates, one board cut to 14′ 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°.
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 twelve boards cut to 8′-3″ that will be the studs and two boards cut to 14′ 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°.
Step 5 – Assemble Side Wall Frames
5.1 Using 1 1/2″ x 3 1/2″ pressure-treated lumber, construct side wall frame using the drawing below as a reference. You will need ten boards cut to 7′-3″ that will be the studs 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°.
Step 6 – Assemble The Roof Frame
6.1 Using 1 1/2″ x 5 1/2″ pressure-treated lumber, cut eleven 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.
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 three 3″ door hinges using 6×1″ wood screws. Finish the installation of the doors by attaching 4″ surface bolts and 6″ door pulls.
Step 8 – Roof Sheathing Installation
8.1 You will need 210 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.
Step 9 – 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 28). 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.
Step 10 – Decorate the Shed
Now that you’ve finished the shed, you are ready to paint it or finish with a wood stain or preservative.
Download Printable PDF Straight To Your Inbox!
Enter your details below and download the extended version of this plan.