12×12 Gable Shed Roof Plans

This step by step woodworking project is about 12×12 shed gable roof plans. This is PART 2 of the shed project, where I show you how to build the gable roof for the storage shed. The shed comes with overhangs on all sides and with sturdy trusses. My plans come with step by step instructions and you can easily adjust all the dimensions to suit your needs. See my other DIY projects HERE.

We recommend you to invest in the best materials you could afford. Therefore, you should buy weather-resistant lumber, such as pine or cedar. Always take accurate measurements before adjusting the size of the components at the proper size. Drill pilot holes trough the components before inserting the wood screws, to prevent the wood from splitting.

 

 

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12×12 Gable Shed Roof Plans

Building a 12x12 shed

Building a 12×12 shed

 

Materials

  • G – 4 pieces of T1-11 siding – 32″x48″ long, 2 pieces – 46″x48″ long SIDING 
  • I – 2 pieces of 2×4 lumber – 96″ long, 1 piece of 2×6 lumber – 144″ long 7xTRUSSES
  • I – 14 pieces of 2×4 lumber – 23 1/2″ long, 7 pieces – 36 1/2″ long TRUSS SUPPORTS
  • J – 8 pieces of 2×4 lumber – 96″ long, 20 pieces – 7″ long OVERHANG 
  • K – 4 pieces of 3/4″ plywood- 10 3/4″x93 3/4″ long, 2 pieces – 48″x96″ long, 2 pieces – 48″x48″ long, 2 pieces – 45 3/4″x96″ long, 2 pieces – 45 3/4″x48″ long ROOF
  • L – 250 sq ft of tar paper, 250 sq ft of asphalt shingles ROOFING
  • M – 2 pieces of 1×6 lumber – 165 1/4″ long, 4 pieces – 98″ long TRIMS

Tools

Time

  • One Day

 

 

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Building a 12×12 gable shed roof

Building the trusses

Building the trusses

First of all, you need to build the trusses for the 12×12 shed. As you can easily notice in the diagram, you need to use 2×6 lumber for the bottom rafter and 2×4 lumber for the regular rafters. Make the angle cuts with a miter saw. Lay the rafters on a level surface and leave no gaps between them.

Truss supports

Truss supports

Use 2×4 lumber for the truss supports. Make the angle cuts to the top of the supports and then fit them to the trusses.

Fitting the gussets

Fitting the gussets

Cut the gussets from 1/2″ plywood and then lay them over the joints. Use 1 5/8″ screws to secure the gussets into place tightly.

Fitting the trusses

Fitting the trusses

Fit the trusses to the top plates of the shed. Place the shed trusses every 24″ on center, as shown in the diagram. Plumb the trusses with a spirit level. Use rafter ties to secure the trusses into place.

Gable end panels

Gable end panels

Use T1-11 siding for the gable end panels. Mark the cut lines on the sheets and then get the job done with a saw. Smooth the cut edges with sandpaper and then attach them into place. Align the edges flush and insert 6-8d nails every 8″ along the framing. Leave no gaps between the panels for a neat result.

Building the overhangs

Building the overhangs

Build the overhangs from 2×4 lumber (both the rafters and the blockings). Drill pilot holes through the rafters and insert 3 1/2″ screws into the blockings. Place the blockings equally spaced.

Fitting the overhangs

Fitting the overhangs

Fit the overhangs to the front and to the back of the 12×12 shed. Align the edges flush, drill pilot holes and insert 3 1/2″ screws to lock the overhangs into place tightly.

Roof sheets

Roof sheets

Use 3/4″ plywood for the roof of the square gable shed. Cut the sheets at the dimensions shown in the diagram and then lay them over the rafters. Align the edges flush and then insert 1 5/8″ screws, every 8″ along the rafters. Leave no gaps between the sheets for a professional result.

Side roof trims

Side roof trims

Fit 1×6 lumber to both sides of the roof. Align the edges and insert 2″ nails to secure the trims into place tightly.

Front and back trims

Front and back trims

Cut the trims for the front and back of the roof from 1×6 lumber, as well. Make the angle cuts to both ends of the trims and then secure them into place with 2″ nails.

Fitting the roofing

Fitting the roofing

You could fit asphalt shingles to protect the shed, as it is a straight forward solution. Therefore, install roofing felt over the roofing sheets, making sure the strips overlap at least 2″. Secure the tar paper to the plywood sheets with roofing staples. Fit the side drip edges over the roofing felt, while the bottom drip edges should be fit under. Place a starting course at the bottom of the roof, before installing the asphalt shingles. Always read the manufacturing instructions before starting the installation, as there are several aspects that differ.

Smart Tip: The first course should star with a 3 tab shingle, the second course with a  2 1/2 tab , the third course with a 2 tab, the forth course with a 1 1/2 tab, the fifth course with a 1 tab, the sixth course with a 1/2 tab. Repeat the process from the beginning, starting with the seventh course. Don’t forget that the shingles should overhang from the drip edge about a 1/4″. In addition, secure the asphalt shingles to the roof decking with tacks.

12x12 shed plans - Back view

12×12 shed plans – Back view

This square shed has a really nice appearance, which means you can build it and it will blend in with any style. This garden shed has nice overhangs on all sides and a steep roof, so it is suitable for any location. You can customize the shed by fitting windows or a door to the sides of the shed.

12x12 shed plans

12×12 shed plans

If you want to build the frame for this shed, make sure you take a look over PART 1. Check out PART 3 to learn how to build the door for this outdoor storage shed. If you like my project, don’t forget to SHARE it on Facebook and Pinterest.

Smart Tip: Don’t forget to share your projects with me, as I love seeing what you guys are working on. Send me the pics HERE. In addition, take a look over the rest of my DIY projects HERE.

 

 

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