12×12 Gambrel Shed Roof Plans

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This step by step diy project is about 12×12 gambrel shed roof plans. This is PART 2 of the storage barn shed project, where I show you everything you want to know about framing the barn shaped roof. 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 site for the shed with attention and that you have to comply with a few legal 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.

 

 

Projects made from these plans

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12×12 Gambrel Shed Roof Plans

Building a 12x16 gambrel shed

Building a 12×12 gambrel shed

 

  • H – 4 pieces of T1-11 siding – 48″x65 1/2″ long, 2 pieces – 48″x75 1/2″ long SIDING
  • I – 40 pieces of 2×6 lumber – 59″ long TRUSSES
  • J – 8 pieces of 2×4 lumber – 59″ long, 16 pieces – 4 1/2″ long 2xOVERHNAG
  • K – 4 pieces of 2×4 lumber – 58 3/4″ long SUPPORTS
  • K – 4 pieces of 3/4″ plywood – 48″x96″ long, 4 pieces – 48″x48″ long, 4 pieces – 11″x96″ long, 4 pieces – 11″x48″ long, 8 pieces – 8″x59″ long ROOF
  • L – 300 sq ft of tar paper, 300 sq ft of asphalt shingles ROOFING
  • M – 2 pieces of 2×4 lumber – 89″ long, 1 piece – 103″ long JAMBS
  • N – 2 pieces of 2×4 lumber – 79″ long, 1 piece – 79″ long, 1 piece – 41″ long, 1 piece of T1-11 siding – 48″x86″ long 2xDOOR
  • O – 2 pieces of 2×4 lumber – 89″ long, 1 piece – 39″ long JAMBS
  • P – 2 pieces of 2×4 lumber – 82″ long, 2 pieces – 32″ long, 1 piece – 25″ long, 1 piece of T1-11 siding – 32″x89″ long DOOR
  • R – 8 pieces of 1×4 lumber – 94 1/2″ long, 2 pieces – 30″ long, 2 pieces – 31″ long TRIMS

 One week

 

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How to build a 12×12 barn shed roof

Building the rafters

Building the rafters

The first step of the project is to build the rafters from 2×6 lumber. Use a miter saw to make 22.5 degree cuts at both ends of the rafters.

Birdmouths cuts

Birdmouths cuts

Use a saw to make the birdmouths cuts to the base rafters.

Fitting the gussets

Fitting the gussets

Use 1/2″ plywood for the gussets. Mark the cut lines on the plywood sheet and get the job done with a saw. Fit the gussets over the joints and then lock them to the joints with 1 5/8″ screws.

Fitting the trusses

Fitting the trusses

Fit the trusses to the top of the barn shed. Fit the trusses every 16″ on center and then plumb them vertically with a spirit level. Use rafter ties to secure the trusses into place tightly.

Gambrel end supports

Gambrel end supports

Use 2×4 lumber for the gambrel end supports of the barn shed. Make 22.5 degree cuts to one end of the supports and drill pocket holes at both ends. Fit the supports into place and insert 2 1/2″ screws to lock them tightly.

Gambrel end panels

Gambrel end panels

Cut the sheets for the gambrel ends and then lock them to the supports with 6-8d nails, every 8″. Leave no gaps between the sheets for a professional result.

Building the overhangs

Building the overhangs

The next step of the project is to assemble the overhangs. Drill pilot holes through the rafters and insert 2 1/2″ screws into the blockings.

Fitting the overhangs

Fitting the overhangs

Fit the overhangs to the front and back of the barn shed. Align the edges with attention, drill pilot holes and insert 3 1/2″ screws to lock the overhangs to the shed frame.

Roof sheets - 12x12 Barn Shed Plans

Roof sheets – 12×12 Barn Shed Plans

Use 3/4″ plywood for the roof of the barn. Cut all the sheets to the right dimensions and then attach them to the roof of the barn shed. Use 1 5/8″ screws to secure the panels into place, every 8″ along the rafters.

Fitting the roofing

Fitting the roofing

Cover the roof of the shed with roofing felt, making sure the strips overlap at least 2″. Secure the tar paper to the plywood sheets with roofing staples. In addition, cut a large piece for the top ridge. Fit the side drip edges over the roofing felt, while the bottom drip edges should be fit under.

Read the instructions labeled on the asphalt shingle packs before installing them into place tightly. Start with the bottom left side of the roof and install them all the way to the top.

Side door

Side door

Build the door panels from T1-11 siding and the trims from 2×4 lumber. Align the trims flush with the door panels and secure them together with glue and 1 5/8″ screws.

Double front doors

Double front doors

Build the double doors for the shed using the same techniques described above.

Side door jambs

Side door jambs

Fit the 2×4 jambs around the opening. Align the edges with attention flush and insert 3 1/2″ screws to lock them into place tightly.

Fitting the side doors

Fitting the side doors

Fit the door to the opening and align the edges with attention. Fit the door and lock it to the jambs with hinges. Install a latch to keep the door locked.

Double front doors jambs

Double front doors jambs

Fit the jambs to double doors.

Fitting the double doors

Fitting the double doors

Attach the double doors into place tightly.

Fitting the trims

Fitting the trims

Fit the window into the opening and lock it into place with the appropriate screws. Attach the decorative 1×4 trims around the window. Fit the decorative trims to the corners of the shed to make it pop. Apply a few coats of paint over the exterior siding and trims to protect the components from the elements and to make the shed eye catching.

12x12 Gambrel Shed - Free DIY Plans

12×12 Gambrel Shed – Free DIY Plans

This barn shed is easy to build. Make sure you take a look over PART 1 of the project.

How to build a 12x12 barn shed

How to build a 12×12 barn shed

If you have’t looked over PART 1 yet, I recommend you to do it, as it will show everything you want to know about building the frame of the shed. In addition, you should consider checking my 12×16 barn shed plans, as well.

 

 

This woodworking project was about 12×12 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.

 

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2 Comments »

  1. Robert at - Reply

    Any reason I could not add a floor and 3′ wall on top of the first level, then set the roof on that? The goal is to build a tree house in the second story to avoid building both separately.

    • Ovidiu at - Reply

      That will work.

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