This step by step project is about 4×12 lean to shed plans. I have designed this shed so you can build a simple tool shelter, even if you only have a narrow space for it. This shed features a lean to roof, a door on one end and a window, so you can have some light inside. The shed is built on a sturdy 2×4 framing, so you will be using the shed for many years. Please read the local codes so you can make adjustments to the plans, if necessary. The wall studs and rafters are placed every 24″ OC, but if you live in an area with winds or snow, make sure you use 16″ OC.
There are several aspects that any person should take into account before starting the woodworking project. First of all, you need to use weather-resistant lumber, such as cedar, pine or redwood. Drill pocket holes at both ends of the components, if you want to lock them together tightly. In addition, add wood glue to the joints and check if the corners are right-angled. Plan everything from the very beginning, if you want to get a professional result.
Projects made from these plans
4×12 Lean to Shed Plans
- A – 2 pieces of 4×4 lumber – 144″ long SKIDS
- B – 2 pieces of 2×6 lumber – 144″ long, 10 pieces – 45″ long JOISTS
- C – 1 piece of 3/4″ plywood – 48″ x 96″ long, 1 piece – 48″x48″ long FLOOR
- D – 2 piece of 2×4 lumber – 144″ long, 8 pieces – 80″ long, 3 pieces – 10″ long, 7 pieces – 27″ long, 2 pieces – 36″ long SIDE WALL
- E – 2 piece of 2×4 lumber – 144″ long, 7 pieces – 80″ long SIDE WALL
- E – 2 piece of 2×4 lumber – 144″ long, 9 pieces – 10″ long TOP SIDE WALL
- F – 2 pieces of 2×4 lumber – 6″ long, 1 piece – 48″ long, 4 pieces – 80″ long, 2 pieces – 76 1/2″ long, 2 pieces – 39″ long FRONT WALL
- G – 2 pieces of 2×4 lumber – 48″ long, 6 pieces – 80″ long BACK WALL
- G – 3 pieces of 5/8″ T1-11 siding – 48″x84″ long, 3 pieces – 48″x96″ long SIDING
- 2 pieces of 4×4 lumber – 12′
- 2 pieces of 2×6 lumber – 12′
- 5 pieces of 2×6 lumber – 8′
- 37 pieces of 2×4 lumber – 8′
- 6 pieces of 2×4 lumber – 12′
- 2 pieces of 3/4″ plywood – 4’x8′
- 6 pieces of 5/8″ T1-11 siding – 4’x8′
- 3 1/2″ screws, 1 5/8″ screws, 2 1/2″ screws
- wood glue, stain/paint
- hinges, latch, handle
Building a 4×12 lean to shed
First, you need to frame the floor of the 4×12 lean to shed. Use 2×6 lumber for the joists. Drill pilot holes through the rim joists and insert 3 1/2″ screws into the perpendicular beams. Place the joists every 16″ on center. Make sure the corners are square and measure the diagonals. Make adjustments till both diagonals are equal.
Next, attach 4×4 skids under the floor frame so you can protect it from moisture. Use rafter ties and 2 1/2″ screws to secure the skids to the frame.
Attach the 3/4″ plywood floor to the frame. Use pressure treated 3/4″ plywood. Drill pilot holes through the sheets and insert 1 1/4″ screws into the joists, every 8″.
The next step of the shed project is to frame the front wall of the construction. First, cut all components as shown in the diagram using 2×4 boards. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Make sure the corners are square and install a double 2×4 header to the front wall.
Continue the woodworking project by framing the back wall. You need to double the studs placed at both ends of the wall, in order to add strength to the structure. Use the same techniques described above to assemble the back wall frame together.
Repeat the process for the side walls of the 4×12 lean to shed. Take accurate measurements before adjusting the size of the components, otherwise they won’t fit each other properly. Pre-drill the plates before inserting the 3 1/2″ screws into the studs, to prevent the wood from splitting. Make sure the corners are square and place the studs equally-spaced. Invest in high quality materials and work with attention.
Next, you need to frame the opposite side wall. As you can see in the diagram, you can frame a window to this wall, to let some light inside the shed. You can adjust the size of the window to suit your needs, but the plans come with a 24″x36″ window.
Assemble the frame of the shed after you have all the walls. Lay the wall frames to the floor of the shed and align the edges flush. Drill pilot holes through the bottom plates and insert 3 1/2″ screws into the floor. Plumb the walls and make sure the corners are square. Align the edges flush for a professional result.
Next, you need to assemble the top side wall. You can adjust the height of this wall if you want a steeper slope. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 24″ on center.
Fit the wall frame to the shed, as shown in the plans. Drill pilot holes through the bottom plate and insert 2 1/2″ screws to lock the section to the shed frame. Align the edges flush and plumb it with a spirit level.
Use T1-11 siding panels for the exterior walls. Make cuts around the window openings. Align the edges flush and and leave no gaps between the components. Insert 8d nails every 8″ along the framing.
Install the 5/8″ T1-11 siding to the other side of the structure. Align the sheets to the top of the wall frames, making sure the edges are perfectly flush.
Last but not least, you should take care of the finishing touches. Therefore, fill the holes with wood putty and let the compound to dry out for several hours. Smooth the surface with medium-grit sandpaper along the wood grain.
Top Tip: Apply several coats of stain or paint to enhance the look of the shed and to protect the components from decay. Check out the rest of the projects to see how to build the roof and the door.
This project was about 4×12 lean to shed plans. If you want to see more outdoor plans, we recommend you to check out the rest of the projects. LIKE us on Facebook to the the first that gets our latest projects and send us pictures with your woodworking projects.