12×12 Lean to Shed Plans

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This step by step diy project is about 12×12 lean to shed shed plans. This is a compact shed with a lean to roof with the slope towards the front. You can build this shed in one week, but make sure you read the local codes and make the necessary adjustments to comply with them. Take a look over the rest of my woodworking plans, if you want to get more building inspiration.

When buying the lumber, you should select the planks with great care, making sure they are straight and without any visible flaws (cracks, knots, twists, decay). Investing in cedar or other weather resistant lumber is a good idea, as it will pay off on the long run. Use a spirit level to plumb and align the components, before inserting the galvanized screws, otherwise the project won’t have a symmetrical look.

 

 

Projects made from these plans

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Building a 12×12 lean to shed

Building a 12x12 lean to shed

Building a 12×12 lean to shed

 

  • A – 5 pieces of 4×4 lumber – 144″ long SKIDS
  • B – 2 pieces of 2×6 lumber – 144″ long, 10 pieces – 141″long FLOOR
  • C – 3 pieces of 3/4″ plywood – 48″x96″ long, 3 pieces – 48″x48″ long FLOORING
  • D – 2 pieces of 2×4 lumber – 24″ long, 1 piece – 144″ long, 1 piece – 137″ long, 7 pieces – 79 1/2″ long, 2 pieces – 74″ long, 2 pieces of 2×6 lumber – 99″ long FRONT WALL
  • D – 2 pieces of 2×4 lumber – 137″ long, 1 piece – 144 long, 7 pieces – 79 1/2″ long 2xSIDE WALL
  • E – 2 pieces of 2×4 lumber – 144″ long, 1 piece – 137 long, 9 pieces – 79 1/2″ long BACK WALL
  • E – 2 pieces of 2×4 lumber – 144″ long, 9 pieces of 2×4 lumber – 21″ long TOP BACK WALL
  • G – 11 pieces of T1-11 – 48″x84″ long, 3 pieces – 24″x48″ long, 1 piece – 8 1/2″x48″ long SIDING

  • 5 pieces of 4×4 lumber – 12′
  • 12 pieces of 2×6 lumber – 12′
  • 5 pieces of 3/4″ plywood – 4’x8′
  • 13 pieces of 2×4 lumber – 12′
  • 2 pieces of 2×6 lumber – 10′
  • 36 pieces of 2×4 lumber – 8′
  • 4 pieces of 3/4″ plywood – 48″x96″
  • 12 pieces of T1-11 – 48″x96″
  • 8d nails, 2 1/2″ screws, 3 1/2″ screws
  • wood filler wood glue, stain/paint

 One day

 

 

Building a 12×12 shed with a lean to roof

Building the floor frame

Building the floor frame

First of all, you need to build the floor frame for the 12×12 shed. Cut the joists from 2×6 lumber at the dimensions shown in the diagram. Lay the joists on a level surface and then align the edges flush. Make sure the corners are square and then drill pilot holes through the rim joists. Insert 3 1/2″ screws to lock the components together tightly.

Fitting the skids

Fitting the skids

Fit 4×4 skids under the floor frame. Place the skids equally spaced and then lock them to the frame with rafter ties.

Floor sheets

Floor sheets

Fit the 3/4″ plywood sheets to the floor of the shed. Align the edges flush and leave no gaps between them. Insert 1 5/8″ screws to lock the sheets along the joists, every 8″.

Side wall frames

Side wall frames

The next step of the project is to build the side wall frames from 2×4 lumber. Cut the components at the right dimensions and then lay them on a level surface. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Check if the corners are square and place the studs every 24″ on center, as shown in the diagram.

Front wall frame

Front wall frame

Frame the front wall using the information from the diagram. Cut the components from 2×4 lumber at the dimensions shown in the plans. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Use 2×6 lumber for the double header and fit 1/2″ plywood between the beams. Drill pilot holes and insert 2 1/2″ screws to assemble the double header. You can adjust the size of the door opening to suit your needs.

Back wall frame

Back wall frame

Cut the components for the back wall from 2×4 lumber, after taking accurate measurements. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 24″ on center, for a professional result. Make sure the corners are square and align the edges flush.

Fitting the wall frames

Fitting the wall frames

Fit the wall frames to the floor of the shed. Align the edges flush and plumb the walls with a spirit level. Drill pilot holes through the bottom plates and insert 3 1/2″ screws to lock them into place tightly. Moreover, you need to lock the adjacent walls together tightly using 2 1/2″ screws. Make sure the corners are square for a professional result.

Top back wall

Top back wall

Build the top frame for the back wall, using the information from the diagram. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 24″ on center.

Assembling the shed frame

Assembling the shed frame

Fit the wall frame into place with attention. Align the edges with attention, drill pilot holes through the bottom plate and insert 3 1/2″ screws to lock it into place tightly.

Side wall siding sheets

Side wall siding sheets

Fit the T1-11 siding sheets to the sides of the shed. Align the edges with attention and leave no gaps between the sheets. Insert the 6-8d nails every 8″ along the framing.

Front wall siding sheets

Front wall siding sheets

Fit the T1-11 siding sheets to the front of the shed. Make the cuts so you can fit the sheets around the door opening. Insert 6-8d nails, every 8″ along the framing.

Back wall siding panels

Back wall siding panels

Fit the panels to the back of the shed, as well. Leave no gaps between the sheets and align everything neatly. Insert 6-8d nails every 8″ along the framing.

12x12 Lean to shed Plans

12×12 Lean to shed Plans

I have lots of other shed projects on the site so I recommend you to browse through all alternatives before starting the building project. See all my shed projects HERE. Moreover, check out PART 2 and PART 3 of the shed, so you learn how to build the roof and the double front doors.

 

 

This woodworking project was about 12×12 lean to shed plans free. If you want to see more outdoor plans, check out the rest of our step by step projects and follow the instructions to obtain a professional result.

 

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