8×12 Saltbox Shed – Free DIY Plans

This step by step diy project is about diy 8×12 saltbox shed plans. This is a really sturdy shed with a uniquely shaped saltbox roof, that you can build in one week. The 3 ft door and the 2 windows placed to the front of the shed will help you have the perfect storage area packed in a under 100 sq ft structure. Moreover, I have designed shed with many sizes so check them out, as well. 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. If you have all the materials and tools required for the project, you could get the job done in about a day. See all my Premium Plans HERE.



Projects made from these plans




8×12 Saltbox Shed – Free DIY Plans




Cut List

  • A – 2 pieces of 2×6 lumber – 144″ long, 10 pieces – 93″ long SKIDS
  • B – 3 pieces of 4×4 lumber – 144″ long SKIDS
  • C – 2 piece of 3/4″ plywood – 48″x96″ long, 2 pieces – 48″x48″ long FLOOR
  • D – 2 pieces of 2×4 lumber – 12′ long, 1 piece – 137″ long, 12 pieces – 67 1/2″ long BACK WALL
  • E – 2 pieces of 2×4 lumber – 12′ long, 2 pieces – 54″ long, 12 pieces – 92 1/4″ long, 6 pieces – 40 3/4″ long, 6 pieces – 20 1/2″ long, 4 pieces – 24″ long, 8 pieces – 27″ long, 2 pieces – 78 1/2″ long, 4 pieces – 8 1/4″ long, 2 pieces of 2×6 lumber – 39″ long FRONT WALL
  • F – 2 pieces of 2×4 lumber – 89″ long, 1 piece – 92 1/2″ long, 7 pieces – 67 1/2″ long 2xSIDE WALL
  • G – 3 pieces of T1-11 – 48″x72″ long, 3 pieces – 48″x96″ long, 4 pieces – 48″x70 1/2″ long SIDING

Shopping List

  • 3 pieces of 4×4 lumber – 12′
  • 2 pieces of 2×6 lumber – 12′
  • 11 pieces of 2×6 lumber – 8′
  • 3 pieces of 3/4″ plywood – 4’x8′
  • 5 pieces of 2×4 lumber – 12′
  • 55 pieces of 2×4 lumber – 8′
  • 10 pieces of T1-11 – 48″x96″
  • 1 piece of 1/2″ plywood – 48″x96″
  • 8d nails, 2 1/2″ screws, 3 1/2″ screws
  • 1 5/8″ screws
  • rafter ties, joist hangers
  • shed anchors
  • wood filler, wood glue, stain/paint


 Hammer, Tape measure, Framing square, Level

 Miter saw, Drill machinery, Screwdriver, Sander

 Safety Gloves, Safety Glasses


 One week




8×12 Saltbox Shed – Free DIY Plans



The first step of the project is to build the floor for the 8×12 garden shed. Cut the joists from 2×6 or 2×8 lumber using a good saw. Align the beams, making sure the corners are square, drill pilot holes and insert 3 1/2″ screws to lock them together tightly. You can use joist hangers, as well. Measure the diagonals and make adjustments to the frame until they are equal. Read the local building codes so you make sure these plans comply with your legal regulations!

First of all, level the ground where you are going to place the shed. Lay a 2″ thick layer of gravel. The gravel will keep the moisture away from the floor frame.

Fitting the skids

Fitting the skids

After assembling the floor frame, you need to attach the 4×4 skids. Use metal connectors to secure the skids to the joists, after aligning them or toenail them.

Floor sheets - 8x12 shed

Floor sheets – 8×12 shed

Continue the project by attaching the 3/4″ plywood sheets to the floor frame. Leave no gaps between the floor sheets and secure them into place with 1 5/8″ screws, every 8″ along the joists.


Building the shed wall frames

Back wall frame

Back wall frame

Assemble the back wall from 2×4 lumber. Cut the studs and the plates at the right dimensions. Drill pilot holes through the top plates and insert 3 1/2″ screws into the studs, using the information from the diagram. Alternatively, you can use a framing gun and nails. Make sure the corners are square for a professional result. Place the studs every 16″ on center and make sure the corners are square.

Wall Studs

Wall Studs

As you can see in the plans, you need to fit 1/2″ plywood fillings to the double end studs.



Continue the project by assembling the front wall. As you can notice in the diagram, you need to leave enough space for the 3′ door opening. You can easily adjust the size of the door to suit your nails. As you can see in the plans, you need to install the jack studs to reinforce the structure of the shed. Use 2×6 lumber for the double header. The double header for the door is made from 2×6 lumber filled with 1/2″ plywood. Cut the plywood to size and glue it to the headers with construction glue. In addition, drive a few screws or nails to lock everything tightly.

I also added 2 windows to the front wall, so you can have enough light inside. Use 2×4 lumber for the double headers. The windows are 2’x2′, but you can also adjust them to suit your needs.

Side wall frame

Side wall frame

Next, build the side walls for the saltbox storage shed. You should also notice the double plates that will add more rigidity to the walls and to the overall framing. Place the studs every 16″ on center, drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Work on a level surface for best result.


Assembling the shed frame



Fit the 4 walls to the shed floor and lock them to the adjacent walls with 3 1/2″ screws. Make sure the corners are square and insert screws through the bottom plates into the floor, as well. Lock the adjacent wall frames together with screws to enhance the rigidity of the shed frame.

Side panels - 8x12 shed

Side panels – 8×12 shed

Build the exterior wall panels from 5/8″ T1-11 siding. As you can notice in the diagram, you need to make some cuts to the sheets. Use 6-8d galvanized nails to secure the sheets to the wall frames. Align everything with attention and insert the nails every 8″ along the studs.

Back wall sheets

Back wall sheets

Cut the siding sheets for the back wall to 72″. Fit the siding sheets to the back of the shed. Leave no gaps between the sheets and align them to the top plates. Insert the 6-8d nails to secure the

Front sheets

Front sheets

Attach the rest of the sheets to the front wall of the shed. Align the edges with attention and secure them to the wall studs with 6-8d nails or screws. Make sure you leave no gaps between the sheets for a professional result. Make the cut outs for the door and windows.


saltbox shed plans

This 8×12 shed would make for the ideal garden shelter, so you can store your lawn mower and other tools everyone has in the backyard. In addition, this shed is is sturdy and simple to make. You really need to feel this saltbox design and go with it, instead of a lean to or a gable roof.

8x12 saltbox shed plans - back view

8×12 saltbox shed plans – back view

Make sure you check out the rest of the project, so you learn how to frame the roof and how to attach the door and the trims to the shed. In addition, 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 plans HERE. If you want to get this project as a PDF file, with 1 full Cut list and 1 full Shopping list, please take a look over the GET PDF PLANS button bellow.


Get PDF Plans


This woodworking project was about 8×12 shed with saltbox roof 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.





  1. Jon

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