12×24 Gambrel Shed Plans

This step by step diy project is about 12×24 gambrel shed plans. This is a large barn shed with 8′ tall walls. This shed features a double front door for easy access inside and two side windows. Moreover, this shed has a small side door for easy access, when you don’t have large items with you. You can easily add a ramp to the front double doors, so you can store bikes, and atv or other large items. Make sure you check the local codes and make adjustments to the plans, if required. 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. See all my Premium Plans HERE.

Projects made from these plans

12×24 Gambrel Shed Plans

Building-a-12×24-barn-shed

Cut & Shopping Lists

• A – 5 pieces of 4×4 lumber – 288″ long SKIDS
• B – 2 pieces of 2×8 lumber – 288″ long, 19 pieces – 137″long FLOOR FRAME
• C – 8 pieces of 3/4″ plywood – 48″x96″ long, 2 pieces – 48″x48″ long FLOORING
• D – 4 pieces of 2×4 lumber – 144″ long, 22 pieces of 2×4 lumber – 91 1/2″ long, 1 piece – 281″ long SIDE WALL
• E – 2 pieces of 2×4 lumber – 144″ long, 10 pieces – 91 1/2″ long, 3 pieces – 6″ long, 2 pieces – 30″ long, 3 pieces – 44 12″ long, 4 pieces of 2×6 lumber – 33″ long, 1 piece – 281″ long SIDE WALL
• E – 1 piece of 2×4 lumber – 144″ long, 1 piece – 80″ long, 1 piece – 32″ long, 9 pieces – 91 1/2″ long, 2 pieces – 80″ long, 6 pieces – 6″ long, 2 pieces – 30″ long, 3 pieces – 44 1/2″ long, 4 pieces of 2×6 lumber – 33″ long SIDE WALL
• F – 2 pieces of 2×4 lumber – 35 1/2″ long, 1 piece – 144″ long, 1 piece – 137″ long, 8 pieces – 91 1/2″ long, 2 pieces – 78 1/2″ long, 6 pieces – 7 1/2″ long, 2 pieces of 2×6 lumber – 75″ long SIDE WALL
• G – 2 pieces of 2×4 lumber – 137″ long, 1 piece – 144″ long, 10 pieces – 91 1/2″ long BACK WALL
• H – 12 pieces of T1-11 siding – 48″x96″ long, 5 pieces – 48″x94 1/2″ long, 1 piece – 14 1/2″x48″ long SIDING 

• 5 pieces of 4×4 lumber – 24′
• 2 pieces of 2×8 lumber – 24′
• 19 pieces of 2×8 lumber – 12′
• 9 pieces of 3/4″ plywood – 4’x8′
• 13 pieces of 2×4 lumber – 12′
• 2 pieces of 2×4 lumber – 24′
• 73 pieces of 2×4 lumber – 8′
• 7 pieces of 2×6 lumber – 8′
• rafter ties
• 1 5/8″ screws
• 2 1/2″ screws, 3 1/2″ screws
• 6d nails
• wood filler , wood glue, stain/paint

Tools

 Hammer, Tape measure, Framing square, Level

 Miter saw, Drill machinery, Screwdriver, Sander

 Safety Gloves, Safety Glasses

Time

 One month

Related

• PART 1: 12×24 Gambrel Shed Plans
• PART 2: 12×24 Gambrel Shed Roof Plans
• PART 3: 12×24 Shed Door Plans

How to build a 12×24 gambrel shed

Floor frame

The first step of the large shed project is to build the floor frame. Cut the components at the right dimensions and then lay them on a level surface. Use 2×8 lumber for the joists. Drill pilot holes through the rim joists and then insert 3 1/2″ screws into the perpendicular beams. Place the joists every 16″ on center, as in the diagram. Check if the corners are right angled and make adjustments, if necessary. Measure the diagonals and make sure they are perfectly equal.

Fitting the skids

Fit 4×4 skids under the floor frame. Align the edges and use rafter ties to secure the skids to the frame of the floor. Select the right location for the shed and then remove the vegetation layer. Compact a thick layer of gravel and make sure the surface is level. Alternatively, you can use posts and footings to secure the floor frame into place. Read the local building codes for the best choice.

Fitting the floor sheets

Use 3/4″ plywood for the floor sheets. Take accurate measurements and use a circular saw to make the cuts. Fit the pieces of 3/4″ plywood to the floor frame. Align the edges flush and insert 1 5/8″ screws, every 8″ along the framing. Leave no gaps between the sheets and ideally, use tongue and groove sheets.

Building the wall frames

Plain-side-wall-section

Build the 2 section frames for the plain side wall from 2×4 lumber. Cut the components from 2×4 lumber at the right dimensions. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Make sure the corners are square and place the studs every 16″ on center. Place double studs at both ends of the wall frames, as shown in the diagram.

Assembling the plain side wall

The next step of the project is to assemble the plain side wall, by joining the two section together tightly. Use 2 1/2″ screws to lock the adjacent walls together tightly. Fit the 2×4 plate to the top of the walls. Drill pilot holes and insert 2 1/2″ screws to secure the double plate into place tightly.

Side-wall-section

Build the first of the two section frames for the opposite side wall. As you can easily notice in the diagram, you need to frame a 30″x30″ window to the 2 section frames, so you let enough light inside the barn shed. Use 2×6 lumber for the headers. Sandwich a piece of 1/2″ plywood between the two 2×6 pieces. You can adjust the location or the dimension of the window, to suit your needs.

Side-wall-section-2

Build the other section for the wall, using the same techniques described above. As you can notice in the diagram, you need to leave an opening for a small door. Frame everything with attention, for a durable and proper result.

Assembling the side wall

Next, assemble the side wall by joining the 2 wall frames together. Attach the double plate to the top of the 2 section frames. Insert 2 1/2″ screws to assemble the side wall together tightly.

Back-wall-frame-12×24-barn-shed

Build the back wall for the shed using the same techniques described above and the information from the diagram. Place the studs every 16″ on center, as shown in the diagram.

Front-wall-frame

Build the front wall for the barn shed. Leave a 6′ opening for the double doors.

Assembling the shed frame

Fit the wall frames to the floor of the shed. Align the edges with attention and plumb the walls 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 tightly using 3 1/2″ screws. Use temporary braces for the side walls, as the front, till you install the front wall.

Fitting the siding sheets

Side wall with windows siding sheets

Fit the T1-11 siding sheets to the side wall of the 12×24 barn shed. As you can easily notice in the diagram, you need to cut out the holes for the window opening. Align the sheets to the top edge of the double plates and leave no gaps between them. Insert 6d nails to secure the sheets to the framing, every 8″.

Plain side wall siding sheets

Fit the sheets to the opposite side of the shed, using the same techniques described in the diagram.

Front wall siding sheets

Fit the sheets to the front of the large gambrel shed. Cut the sheets to the cut out the door opening. Leave 1 1/2″ from the top edge of the wall frame. Insert 6d nails to secure the sheets into place.

Back wall sheets

Fit the siding sheets to the back of the gambrel shed, as well. Use the same techniques described above.

How to build a 12×24 barn shed

You should check out PART 2 of the project, so you learn how to build the gambrel shed roof. Check out PART 3 of the project so you learn how to build the double doors and how to fit the decorative trims.

12×24 Gambrel Shed – dimensions

Building a 12×24 gambrel shed with double front doors and a side door will likely cost you between $5,000 and $8,500, depending on the materials and finishes you choose. The gambrel roof adds a bit of complexity and cost, but it provides that classic barn-style look and extra overhead storage space. This investment gives you a spacious, versatile shed that’s built to last and can accommodate a variety of storage needs.

How to build a 12×24 gambrel shed

You’re looking at about 5 to 7 weekends to complete a 12×24 gambrel shed with double front doors and a side door. The larger size and additional doors add some time to the build, but the effort pays off with a highly functional and visually appealing structure. Taking it step by step, you’ll soon have a shed that meets all your storage needs while enhancing the look of your property.

How to build a 12×24 barn shed

With its double front doors and side door, this shed offers easy access and plenty of room for everything from tools to equipment to seasonal items. It’s a space that not only serves your storage needs but also adds a touch of classic charm to your property, making it a valuable and lasting addition to your home.

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. If you want to get PREMIUM PLANS for this project, in a PDF format, please press GET PDF PLANS button bellow. Thank you for the support.

This woodworking project was about 12×24 gambrel 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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