10x12 Barn shed plans | HowToSpecialist - How to Build, Step by Step DIY Plans

This step by step diy project is about 10×12 barn shed plans. If you want to build a learn more about building a small storage shed for your backyard, pay attention to this project. Follow the instructions and pay attention to the diagrams. Build the garden shed even if you are a beginner when it comes to woodworking. Take a look over the rest of the projects, to see more alternatives and design ideas.

You should always plan everything from the very beginning, in order to prevent costly mistakes and to save time. In most of the cases, you need a friend to give you a hand when assembling the barn shed. Invest in high quality lumber and plywood, as the components will be exposed to bad weather. Protect the components with appropriate paint or stain.

There are a few tips that you should take into account, if you want to get a professional result. Therefore, take accurate measurements and use professional tools when making the cuts or when drilling pilot holes. Align the components at both ends and add waterproof glue to the joints, if you want to create a rigid structure. See all my Premium Plans in the Shop.

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10×12 Barn shed plans

Building a 10×12 barn shed

Materials

A – 2 pieces of 2×6 lumber – 144″ long, 7 pieces – 117″ long JOISTS
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, 1 piece – 24″x48″ long, 1 piece – 24″x96″ long FLOOR
D – 1 piece of 2×4 lumber – 113″ long, 2 pieces – 36 1/2″ long, 4 pieces – 36″ long, 2 pieces – 40″ long, 2 pieces – 76 1/4″ long FRONT WALL
D – 2 pieces of 2×4 lumber – 35 1/2″ long, 4 pieces – 36″ long, 2 pieces – 43 1/4″ long, 1 piece – 40″ long FRONT WALL
E – 2 pieces of 2×4 lumber – 113″ long, 6 pieces – 36″ long BACK WALL
E – 2 pieces of 2×4 lumber – 47 1/2″ long, 2 pieces – 36 3/4″ long, 2 pieces – 10 3/4″ long, 1 piece – 54 3/4″ long BACK WALL
F – 2 pieces of 2×4 lumber – 144″ long, 7 pieces – 36″ long 2xSIDE WALLS
G – 14 pieces of 2×4 lumber – 48″ long, 4 pieces – 41 1/2″ long, 10 pieces – 40 3/4″ long RAFTERS
H – 1 piece of 2×6 lumber – 141″ long TOP RIDGE

3 pieces of 2×6 lumber – 12 ft
7 pieces of 2×6 lumber – 10 ft
3 pieces of 4×4 lumber – 12 ft
4 pieces of 3/4″ plywood – 4’x8′
14 pieces of 2×4 lumber – 12 ft (plates and studs)
4 pieces of 2×4 lumber – 10 ft
20 pieces of 2×4 lumber – 8 ft
2 1/2″ screws, 1 5/8″ screws
joist hanger
1 box of structural nails for ties
20 pieces of rafter ties
300 pieces of 2 1/2″ screws
200 pieces of 1 5/8″ screws

Tools

Safety gloves, glasses
Miter saw, jigsaw
Chalk line, tape measure, spirit level, carpentry pencil
Drill machinery and drill bits

Tips

Use a good miter saw to make the angle cuts
Drill pilot holes before inserting the screws
Set the posts in concrete for proper support

Time

One Week

Part 1: 10×12 Barn shed plans
Part 2: How to build a barn shed roof

How to build a barn shed

Building the frame of the floor

The first step of the project is to build the floor of the barn shed. As you can easily notice in the diagram, you need to use 2×6 lumber for the joists. Drill pilot holes through the rim joists and insert 2 1/2″ screws into the perpendicular components. Leave no gaps between the components and make sure the corners are right-angled.

Fitting the skids

Attach 4×4 skids to the frame of the floor. Drill pilot holes through the joists and insert 4 1/2″ screws into the skids.

Attaching the flooring

Next, attach the 3/4″ plywood sheets to the frame of the floor. Cut the sheets at the right dimensions and lay them to the frame, as shown in the diagram. Use 1 5/8″ screws to lock the sheets to the frame. Use tongue and groove plywood sheets to get a professional result and to leave no gaps between the panels.

Building the side walls

Build the side walls of the barn shed using the information described in the diagram. Cut the components out of 2×4 lumber. Drill pilot holes through the plates and insert 2 1/2″ screws into the studs. Place the studs equally-spaced, every 24″ on center.

Fitting the side walls

Lift the side walls and lay them to the floor of the shed. Use a spirit level to make sure the walls are plumb and secure them to the floor by inserting 3 1/2″ screws through the plates. As you can notice in the diagram, we recommend you to use 2×4 braces to secure the walls temporarily to the floor.

Front wall plans

Use the instructions described in the diagram to assemble the front wall. Cut the components out of 2×4 lumber and smooth the edges using fine-grit sandpaper. Drill pilot holes through the plates and insert 2 1/2″ screws into the studs. Adjust the width of the door opening to suit your needs.

Back wall plans

Build the back wall of the barn shed by following the instructions from the diagram. Cut the components at the right size out of 2×4 lumber. Drill pilot holes through the plates and insert 2 1/2″ screws into the studs. Make sure the corners are right-angled and place the studs equally-spaced, every 24″ on center.

Assembling the barn shed

Next, attach the front and the back walls to the structure of the 10×12 barn shed. Align the edges with great care and make sure the corners are right-angled. Drill pilot holes and lock the adjacent walls together, by inserting 2 1/2″ screws.

Building the end rafters

The next step of the project is to build the end rafters. Mark the cut lines on the 2×4 lumber and get the job done by using a circular saw. Drill pilot holes and secure the right rafter to the left rafters by inserting 2 1/2″ screws.

Building the gussets

Reinforce the joints by attaching 3/4″ plywood gussets to the rafters. Use 1 1/4″ screws to secure the gussets to the rafters.

Fitting the end rafters

Next, place the end rafters to the top plates of the side walls. Drill pilot holes through the rafters and insert 2 1/2″ screws into the plates. Plumb the rafters with a spirit level, before inserting the screws.

Fitting the top ridge

Build the top ridge out of 2×6 lumber. Secure the top ridge to the end rafters by using 2 1/2″ screws, after making sure it is perfectly horizontal.

Building the rafters

Next, you need to build the regular rafters out of 2×4 lumber. Cut the components at the right angles and use plywood gussets to the lock them together. Leave no gaps between the rafters for a professional result.

Fitting the intermediary rafters

Fit the rafters to the structure of the barn, as described in the diagram. Drill pilot holes through the rafters and insert 2 1/2″ screws into the top ridge and into the plates.

Building the front wall

Fit the rest of the components to the front wall of the barn shed. Drill pocket holes at both ends of the components and secure them to the structure using 2 1/2″ screws.

Building the top back wall

Cut the supports out of 2×4 lumber, using the information described in the diagram. Drill pocket holes at both ends of the components and secure the to the frame using 2 1/2″ screws. Leave no gaps between the components.

Back wall supports

One of the last steps is to attach the rest of the vertical supports to the back of the barn. Cut the 2×4 components at the angles shown in the diagram and drill pocket holes at both ends. Secure the supports to the frame using 2 1/2″ screws.

Barn Shed Plans

Last but not least, we recommend you to take care of the finishing touches. In order to get a professional result, fill the holes and the gaps with wood filler and let it dry out for a few hours. Check if there are protruding screws and fix this issue, if necessary.

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