14×20 Gambrel Shed – Free DIY Plans

This step by step diy project is about 14×20 gambrel shed plans. I have designed this large barn shed so you can store all your tools, bikes, furniture and other items. This shed has double front doors, a side door and a side window. You can easily make modifications to my plans, so the shed suits your needs and tastes. Take a look over the rest of my woodworking plans, if you want to get more building inspiration. Remember that you need to select the location for the shed with attention and that you have to comply with a the local building regulations.

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

14×20 Gambrel Shed – Free DIY Plans

Building-a-14×20-gambrel-shed

Cut + Shopping Lists

• A – 4 pieces of 4×4 lumber – 240″ long SKIDS
• B – 2 pieces of 2×6 lumber – 240″ long, 16 pieces – 165″long FLOOR FRAME
• C – 6 pieces of 3/4″ plywood – 48″x96″ long, 3 pieces – 48″x48″ long, 2 pieces – 24″x96″ long, 1 piece – 24″x48″ long FLOOR
• D – 2 pieces of 2×4 lumber – 32 1/2″ long, 8 pieces – 91 1/2″ long, 1 piece – 168 long, 1 piece – 161″ long, 2 pieces – 78 1/2″ long, 8 pieces – 7 1/2″ long, 2 pieces of 2×6 lumber – 99″ long FRONT WALL
• E – 1 piece of 2×4 lumber – 180″ long, 1 piece – 24″ long, 1 piece – 240″ long, 1 piece – 233″ long, 17 pieces – 91 1/2″ long, 3 pieces – 43″ long, 2 pieces – 30″ long, 7 pieces – 7 1/2″ long, 2 pieces – 78 1/2″ long, 4 pieces of 2×6 lumber – 33″ long, 2 pieces – 39″ long SIDE WALL WITH DOOR
• F – 2 pieces of 2×4 lumber – 240″, 1 piece – 233″ long, 18 pieces – 91 1/2″ long SIDE WALL 
• G – 2 pieces of 2×4 lumber – 161″ long, 1 piece – 168″ long, 12 pieces – 91 1/2″ long BACK WALL
• H – 10 pieces of T1-11 siding – 48″x96″ long, 6 pieces – 48″x95 1/4″ long, 2 pieces – 24″x95 1/4″ long SIDING

• 4 pieces of 4×4 lumber – 20′
• 2 pieces of 2×6 lumber – 20′
• 16 pieces of 2×6 lumber – 14′
• 11 pieces of 3/4″ plywood – 48″x96″
• 6 pieces of 2×4 lumber – 20′
• 5 pieces of 2×4 lumber – 14′
• 63 pieces of 2×4 lumber – 8′
• 2 pieces of 2×6 lumber – 10′
• 3 pieces of 2×6 lumber – 8′
• 17 pieces of T1-11 5/8″ siding – 4’x8′
• 2 1/2″ screws, 3 1/2″ screws, 1 5/8″ screws
• 4d nails, 16d nails, 6d nails
• wood filler , wood glue, stain/paint
• rafter ties
• anchors

Tools

 Hammer, Tape measure, Framing square, Level

 Miter saw, Drill machinery, Screwdriver, Sander

 Safety Gloves, Safety Glasses

Time

 One week

Related

• PART 1: 14×20 Barn Shed Plans 
• PART 2: 14×20 Barn Shed Roof Plans
• PART 3: 14×20 Barn Doors Plans
• 16×20 Barn Shed Plans
• 14×14 Barn Shed Plans

Make sure you follow me on Facebook to be the first that gets our latest plans and for some other exclusive content. Also, follow me on Pinterest to get many ideas for your backyard from all the internet! Check out our YouTube channel! See how you can Support  Me with no extra costs to you. 

Step 1: How to build a 14×20 barn shed floor

Floor frame

The first step of the project is to build the floor frame for the storage shed. Therefore, you have to cut all the joists from 2×6 lumber. Lay all the joists on a level surface and drill pilot holes through the rim beams. Insert 3 1/2″ screws through the rim joists into the perpendicular components. Make sure the corners are square and align the edges flush. Place the joists every 16″ on center, for a professional result.

Make sure you read the local building codes, so you can get the job done in a professional manner. In addition, select the location for the storage shed with attention, so you can comply with the codes and to use your yard efficiently.

Fitting the skids

Next, select the location for the large barn shed, remove the vegetation layer and then compact a thick layer of gravel. Use a spirit level to make sure the surface is perfectly horizontal. Lay the 4×4 skids to the  ground and then fit the floor frame.

Also, align the edges flush and use rafter ties to lock the skids to the floor frame tightly. You can also use anchors so you can lock the shed to the ground, in the case you live in an area with strong winds.

Floor sheets

Additionally, cut the floor sheets to the right dimensions. Attach the 3/4″ tongue and groove plywood sheets to the floor frame, using the pattern show in the plans. Align the edges flush and leave no gaps between the sheets. Insert 1 5/8″ screws every 8″ along the joists, for a professional result.

Step 2: Building the shed wall frames

Front-wall-frame

Continue the project by assembling the front wall for the 14×20 gambrel shed. Cut the components at the right dimensions and then drill pilot holes through the plates. Insert 3 1/2″ screws through the plates into the studs.

Furthermore, use 2×6 lumber for the door double header. Fit a piece of 1/2″ plywood between the 2×6 headers. Add glue to the joints, drill pilot holes and insert 2 1/2″ screws to lock everything together tightly. You can adjust the size of the door opening to suit your needs.

Back-wall-frame

Build the back wall for the storage shed in the same manner described above. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 16″ on center for a professional result. Make sure the corners are square and align the edges with attention.

Side-wall-frame

Next, frame the plain side wall for the 14×20 storage barn shed. As you can easily notice in the diagram, you need to use 2×4 lumber for the plates and studs. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place 1/2″ plywood blockings between the double studs that are placed at both ends of the wall frames.

Side-wall-with-door-frame

Next, you need to assemble the opposite side wall for the shed. Cut all the components from 2×4 lumber at the dimensions shown in the diagram. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 16″ on center and make sure the corners are square. Use double studs and 1/2″ plywood for both ends of the wall frame.

As you can easily see in the diagram, you need to frame a door to the side wall. In addition, frame a small window, so you can let a lot of light inside the shed.

Step 3: Assembling the shed wall frames

Assembling the shed frame

Continue the project by fitting the wall frames to the floor of the shed. Align the edges flush and then plumb them with a spirit level. Drill pilot holes through the bottom plates and insert 3 1/2″ screws into the floor. Join the adjacent walls together tightly using 2 1/2″ screws. Make sure the corners are square for a professional result.

Step 4: Attaching the shed siding sheets

Side wall with door siding sheets

Cut the T1-11 siding sheets to the right dimensions and then secure them to the side wall frame. Make the cuts so you can fit the panels around the door and window openings. Use 6-8d nails to lock the sheets into place, every 8″ along the framing for a professional result.

Side wall siding panels

Next, fit the T1-11 siding panels to the other side of the shed. Align the edges with attention and leave no gaps between the panels, for a professional result. Use 6d nails to secure the panels, every 8″ along the framing.

Back wall siding panels

Attach the T1-11 siding panels to the back of the shed. As you can easily notice in the plans, you need to inset the sheets 1 1/2″ from the top plate. Use 6-8d nails to lock the sheets into place. Insert the nails every 8″ along the framing for a professional result.

Front wall siding panels

Cut the sheets for the front of the shed. Align the sheets and then lock them into place with 6-8d nails, as shown in the diagram. Fit the sheets 1 1/2″ below the top plate.

14×20 gambrel shed plans – Side view

Take a look over PART 2 of the shed, so you learn how to frame the gambrel roof. In PART 3 of the shed you will learn how to build the double front doors and how to fit the decorative trims.

14×20 gambrel shed plans – back view

This large barn shed has plenty of storage space, so if you are looking for a simple structure that will shelter all your tools and equipment, this is worth a chance. Moreover, this shed is sturdy and easy to build.

14×20 Shed Plans

Let’s break down the costs for building a 14×20 gambrel shed. For this project, you’re looking at spending between $3,000 to $5,000, depending on the quality of materials you choose. Lumber, roofing, and siding are the main cost drivers here, with good quality options ensuring durability and longevity. Additional features like windows, a loft, or insulation will add another $600 to $1,200 to your budget. Overall, it’s a solid investment for a versatile and spacious shed.

14×20 Barn Shed Plans

uilding a 14×20 gambrel shed isn’t just about adding storage; it’s about creating value. First, you’re investing in a space that can transform your property—think home office, workshop, or even a mini gym. Second, the unique gambrel design maximizes your headroom and gives you more usable space. Finally, there’s the hustle factor—taking on a project like this sharpens your skills and gives you the satisfaction of building something amazing from the ground up.

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 14×20 barn 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.

- EXPLORE MORE IDEAS FOR -