This step by step diy project is about 14×20 gambrel shed roof plans. This is PART 2 of the large barn shed project, where I show you how to build the gambrel roof. Remember that you can easily frame a loft to this square gambrel shed, for even more storage space. 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
14×20 Gambrel Shed Roof Plans
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- H – 4 pieces of T1-11 siding – 48″x7 3/4″ long, 2 pieces – 48″x85 3/4″ long, 2 pieces – 24″x80 3/4″ SIDING
- I – 4 pieces of 2×4 lumber – 66″ long 16xTRUSS
- I – 4 pieces of 2×4 lumber – 56 1/4″ long, 4 pieces – 66 1/4″ long, 4 pieces – 76 1/4″ long SUPPORTS
- J – 8 pieces of 2×4 lumber – 66″ long, 16 pieces – 6 1/2″ long 2xOVERHANG
- K – 8 pieces of 3/4″ plywood – 10″x66″ long, 8 pieces – 48″x96″ long, 4 pieces – 48″x48″ long, 8 pieces – 18″x48″ long, 4 pieces – 18″x48″ long ROOF
- L – 500 sq ft of tar paper, 500 sq ft of asphalt shingles ROOFING
- M – 8 pieces of 1×6 lumber – 66 1/4″ long ROOF TRIMS
- 7 piece of T1-11 siding – 4’x8′
- 90 pieces of 2×4 lumber – 6′
- 4 pieces of 2×4 lumber – 8′
- 17 pieces of 3/4″ plywood – 4’x8′
- 1/2″ plywood – 4’x8′
- 8 pieces of 1×6 lumber – 8′
- 500 sq ft of tar paper, 500 sq ft of asphalt shingles
- rafter ties
- tar paper
- 6d nails, 2 1/2″ screws, 3 1/2″ screws
- wood filler , wood glue, stain/paint
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Hammer, Tape measure, Framing square, Level
Miter saw, Drill machinery, Screwdriver, Sander
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- PART 1: 14×20 Barn Shed Plans
- PART 2: 14×20 Barn Shed Roof Plans
- PART 3: 14×20 Double Door Plans
Building a 14×20 gambrel shed roof
The first step of the barn shed project is to build the rafters for the gambrel roof. Use a miter saw to make 22.5 degrees cuts to both ends of the 2×4 boards. Lay the rafters on a level surface and leave no gaps between the components. However, you need to make a few cuts to the bottom rafters, so they can fit to the top plates properly. Mark the cut lines to the rafters and then get the job done with attention.
Lay the rafters on a level surface and leave no gaps between them. Use 1/2″ plywood for the gussets and use the information from the diagram to get the job done. Use 1 5/8″ screws to lock the gussets over the rafters.
Fit the trusses to the top of the shed and place the every 16″ on center. Plumb the trusses with a spirit level and use rafter ties to lock them into place tightly.
Fit 2×4 supports to the front and back gambrel ends of the shed. Use the diagram to make the cuts to the supports, drill pocket holes at both ends and insert 2 1/2″ screws to lock them into place tightly.
Use T1-11 siding for the panels. Use a circular saw to cut the panels at the right size and dimensions, and then align the edges flush. Insert 6-8d nails, every 8″ along the framing. Leave no gaps between the panels for a professional result.
Use 2×4 lumber for the overhangs. You can easily adjust the size of the overhangs to suit your needs. Drill pilot holes through the rafters and then insert 3 1/2″ screws into the blockings. Lock the rafters together tightly with screws or with metal plates.
Fit the overhangs to the front and to the back of the shed. Align the edges with attention, drill pilot holes and insert 3 1/2″ screws to lock them into place tightly. You could also frame a small loft to the barn shed. Just fit 2×6 beams to the base of the trusses and then lay 3/4″ plywood sheets. This simple loft will enhance the storage space, so you can shelter all your tools, books, furniture and other items.
Cut the roof sheets at the right dimensions and then fit them to the top of the shed. Align the edges with attention and insert the 1 5/8″ screws, every 8″ along the framing. Leave no gaps between the sheets and make sure the edges are flush.
Fit the 1×6 trims to the front and to the back of the shed roof. Cut both ends of the trims at 67.5 degrees (set the miter saw at 22.5 degrees). Use 2″ nails to lock the trims into place tightly. Leave no gaps between the trims for a professional result. Fill the gaps with wood putty and then smooth the surface thoroughly, before applying the coats of paint.
Cover the roof with tar paper and then install the asphalt shingles. Make sure you also install the appropriate drip edges, so you can seal the shed roof. Read the manufacturer’s instructions for a tight fit.
This barn shed is relatively simple to build. Moreover, it has a nice appearance and it will help you organize your tools, furniture, decorations, parts and other items. 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. Moreover, check out PART 1 of the shed, so you learn how to build the frame of the shed. Check out PART 3 of the shed, so you learn how to build the double doors.
This woodworking project was about 14×20 barn shed roof plans. 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.
Is the miter cut for the 2x4s that meet the top plate 22.5 also? Thank you.
Yes. The only difference is the birdmouth’s cut.