10×12 Lean to Shed Plans – PDF Download

If you want to learn more about 10×12 lean to shed plans you have to take a close look over the free plans in the article. I have designed these simple lean to shed plans so I can help you add more storage space in your backyard. This shed features double 6′ doors to the front and a 3’x3′ window to one side. Therefore, you can use this shed as a small workshop, as well. Remember to read the local codes before starting the project and to comply with the local regulations. The codes differ from one area to another, so it is safer to read them thoroughly.

If you want to get the job done in a professional manner, we recommend you to plan everything with attention, as to prevent costly mistakes and to build a professional garden project. Invest in high quality materials, such as cedar, pine or redwood, as the bench will be exposed to all kinds of weather. Apply a few coats of paint over the components, to enhance their appearance and to protect them from bad weather. See more outdoor storage plans and ideas HERE.

It’s that simple to build a lean to shed!

10×12 Lean to Shed Plans – PDF Download

Building a 10×12 lwan to shed

Materials

• 1 – 2 pieces of 2×6 lumber – 144″ long, 10 pieces – 117″ long FLOOR FRAME
• 2 – 5 pieces of 4×4 lumber –144″ long BASE
• 3 – 3 pieces of 3/4″ plywood – 48″x96″ long, 3 pieces – 24″x48″ long FLOOR
• 4 – 2 pieces of 2×4 lumber – 113″ long, 1 piece – 116 1/2″ long, 6 pieces – 67 1/2″ long SIDE WALL
• 5 – 2 pieces of 2×4 lumber – 113″ long, 1 piece – 116 1/2″ long, 6 pieces – 67 1/2″ long, 4 pieces – 20 1/2″ long, 2 pieces – 36″ long, 4 pieces of 2×6 lumber – 39″ long SIDE WALL
• 6 – 2 pieces of 2×4 lumber – 144″ long, 1 piece – 137″ long, 9 pieces – 67 1/2″ long BACK WALL
• 7 – 2 pieces of 2×4 lumber – 36″ long, 1 piece – 144″ long, 8 pieces – 93″ long, 2 pieces – 82 1/2″ long, 5 pieces – 4 3/4″ long, 2 pieces of 2×6 lumber – 75″ long FRONT WALL
• 8 – 2 pieces of T1-11 siding – 48″x96″ long, 1 piece – 48″x12″ long, 3 pieces – 48″x72″ long, 2 pieces – 48″x99 1/2″ long, 2 pieces – 48″x89 1/2″ long, 2 pieces – 24″x79 3/4″ long SIDING
• 9 – 7 pieces of 2×4 lumber – 144″ long RAFTERS
• 10 – 3 pieces of 3/4″ plywood – 48″x96″ long, 3 pieces – 48″x48″ long ROOF
• 11 – 2 pieces of 2×6 lumber – 144″ long, 2 pieces of 1×6 lumber – 148 1/4″ long, 2 pieces of 1×4 lumber – 36″ long, 2 pieces – 43″ long TRIMS
• 12 – 150 sq ft of tar paper, 150 sq ft of asphalt shingles ROOFING
• 13 – 2 pieces of 2×4 lumber – 84″ long, 1 piece – 79″ long JAMBS
• 14 – 1 piece of T1-11 siding – 36″x84″ long, 2 pieces of 2×4 lumber – 77″ long, 2 pieces – 36″ long, 1 piece – 29″ long 2xDOOR

• 5 pieces of 4×4 lumber – 12′
• 4 pieces of 2×6 lumber – 12′
• 7 pieces of 2×6 lumber – 10′
• 4 pieces of 2×6 lumber – 8′
• 9 pieces of 3/4″ plywood – 4’x8′
• 6 pieces of 2×4 lumber – 10′
• 23 pieces of 2×4 lumber – 12′
• 20 pieces of 2×4 lumber – 8′
• 10 pieces of T1-11 siding – 4’x8′
• 2 pieces of T1-11 siding – 4’x10′
• 2 pieces of 1×6 lumber – 14′
• 2 pieces of 1×4 lumber – 8′
• 150 sq ft of tar paper, 150 sq ft of asphalt shingles
• 1 5/8″ screws
• 2 1/2″ screws
• 3 1/2″ screws
• wood glue, stain/paint
• rafter ties
• door hardware kit

 Tools

• Hammer, Tape measure, Carpentry square
• Miter saw, Drill machinery, Screwdriver, Sander, Router
• Safety Gloves, Safety Glasses, Respiratory Mask

Time

• One weekend

Made from this plan

10x12 lean to shed - Jason Taylor

10x12 lean to shed

10x12 Lean to DIY Shed

STEP 1: Building the shed floor

Building the floor frame

The first step of the project is to build the floor frame for the lean to shed. As you can see in the diagram, you need to cut the joists from 2×6 lumber. Lay the components on a level surface and align the edges flush. Drill pilot holes and insert 3 1/2″ screws to assemble the frame. Make sure the corners are square. Select the location for the lean to shed and remove the vegetation layer. Spread a 2-3″ layer of gravel under the shed floor, so you can protect the floor from moisture.

Fitting the skids

Next, lay the 4×4 skids under the floor frame and lock them together with rafter ties. The skids will lift the floor frame from the ground to protect the components from moisture. You can use 6×6 skids if you want to lift the floor frame more inches. Use pressure treated lumber for the floor frame, as the boards will be exposed to moisture.

Fitting the floor sheets

Fit the 3/4″ tongue and groove plywood sheets to the floor frame and align the edges flush. Leave no gaps between the sheets and secure them into place, every 8″ along the joists, using 1 5/8 screws. Invest in pressure treated plywood.

STEP 2: Building the shed frame

Side wall frame

The next step of the project is to build the plain side wall frame. Cut the components at the right dimensions and drill pilot holes through the plates. Insert 3 1/2″ screws to lock the plates to the studs. Make sure the corners are square.

Side-wall-with-window

Use 2×4 lumber for the other side wall. Frame a 3’x3′ window so you can have enough light inside the shed. If you want just storage space, you can skip this step and build this wall identical with the opposite one. Notice the double 2×6 header and the jack studs.

Front wall frame

Frame the front wall for the 10×12 shed using 2x4s. Place the studs every 24″ on center and frame a 6′ opening for double doors. Use 2×6 lumber for the double header. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs.

Back wall frame

Build the back wall for the lean to shed, using the same techniques described above.

Assembling the frame of the shed

Fit the wall frames to the floor and plumb them with a spirit level. Drill pilot holes through the bottom plates and insert 3 1/2″ screws into the floor. Lock the adjacent walls together with 3 1/2″ screws. Make sure the corners are square.

STEP 3: Attaching the shed siding

Front wall siding sheets

Attach the 5/8″ T1-11 siding sheets to the front of the storage shed. Cut the sheets as shown in the plans and then secure them to the frame with 6d nails, every 8″ along the framing. Leave no gaps between the sheets and align them flush with the framing.

Back wall siding sheets

Attach the T1-11 siding sheets to the back of the shed frame. Align the edges flush and insert 6d nails to secure the sheets, every 8″ along the framing. Leave no gaps between the sheets for a professional result.

STEP 4: Building the lean to shed roof

Building the rafters

Next, you need to build the rafters from 2×4 lumber. You can use 2×6 beams if you live in an area with heavy precipitations. Mark the cut lines on the beams and then get the job done with circular saw.

Fitting the rafters

Fit the rafters to the top of the shed and place them every 24″ on center. Place the rafters every 16″ on center if you live in an area with heavy precipitations. Secure the rafters to the top plates with ties.

Side roof supports

Use 2×4 lumber for the side roof supports. Make the angle cuts to the top of the supports with a miter saw. Fit the supports to the shed and drill pocket holes at both ends. Insert 2 1/2″ screws to secure them into place tightly.

Side siding sheets

Fit the T1-11 siding sheets to the sides of the shed. Align the edges with attention and insert 6d nails to lock them to the framing, every 8″.

Fitting the roof sheets

Attach the 3/4″ plywood sheets to the roof of the shed. Start laying the sheets from the bottom up. Leave no gaps between the sheets and insert 1 5/8″ screws, every 8″ along the rafters.

Side roof trims

Fit the 2×6 trims to the sides of the shed. Align the edges with attention and insert 3 1/2″ screws to lock them into place tightly.

Front and back roof trims

Fit the 1×6 trims to the front and back roof of the shed. Use 3 1/2″ screws to secure the trims into place.

Fitting the roofing

In order to waterproof the shed, you have to cover the roofing sheets with felt. Make sure the strips of roofing felt overlap at least 2-3″ and staple them to the plywood sheets every 8″. Continue the project by installing the asphalt shingles. Place the starting course at the bottom of the roof, before fitting the rest of the shingles.

PRO TIP: Always read the manufacturer’s instructions, before installing the shingles. They provide essential information about the installation of the shingles.

STEP 5: Building the shed doors

Fitting the jambs

Fit the 2×4 jambs around the front opening. Align the edges with attention and insert 3 1/2″ screws to secure them into place tightly.

Double front doors

Next, you need to build the double doors for the lean to storage shed. Use 2×4 lumber for the frame and T1-11 siding sheets for the panels. After you cut the panels you need to lay them on a level surface. Lay the trims over the panels and then insert a few 1 5/8″ screws to lock them into place. Turn the door upside down and insert more 1 5/8″ screws through the panels into the trims.

Fitting the double doors

Fit the doors to the opening and then lock them to the jambs with hinges. Install a latch to keep the door closed and your possessions safe.

Window trims

Fit the 36″x36″ window to the side wall opening and secure it into place properly. Afterwards, attach the 1×4 trims around the window to enhance the look of the shed.

How to build a 10×12 lean to shed

This 10×12 lean to shed is easy to build and it will help you add valuable storage space to your property. In addition, you can get the job done by yourself and save money on labor. This structure is the easiest to build compared to a gable or barn shed, so you can tackle this project even if you are not a professional.

10×12 Lean to shed Plans

You can add decorative trims to the shed to make it pop. In addition, a few coats of paint over the exterior of the shed will get you far in terms of looks. Remember that you need to fit blockings between the rafters to seal the shed. In addition, add a vent to make sure the air circulates properly inside the shed. See more outdoor storage plans and ideas HERE.

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