16×20 Gable Shed Roof Plans

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This step by step diy project is about 16×20 gable shed roof plans. This article is PART 2 of the 16×20 shed project, where I show you how to frame the gable roof. The gable roof has a 30 degree slope, making it ideal for almost any region. Add reinforcement to the roof if you live in an area with heavy snows or hurricanes. 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. If you have all the materials and tools required for the project, you could get the job done in about a day.

 

 

16×20 Gable Shed Roof Plans

Building a 16x20 shed

Building a 16×20 shed

 

  • I – 22 pieces of 2×6 lumber – 130″ long, 11 pieces of – 185″ long TRUSSES
  • I – 4 pieces of 2×4 lumber – 7 1/4″ long, 22 pieces of 2×4 lumber – 21 1/4″ long, 4 pieces – 35″ long, 18 piece – 48″ long SUPPORTS
  • G – 4 pieces of T1-11 siding – 32″x48″ long, 4 pieces – 48″x59 3/4″ long ENDS
  • J – 8 pieces of 2×6 lumber – 130″ long, 36 pieces – 8″ long OVERHANGS
  • K – 8 pieces of 3/4″ plywood – 48″x96″ long, 4 pieces – 48″x48″ long, 4 pieces – 30 3/4″x96″ long, 4 pieces – 48″x30 3/4″ long, 4 pieces – 11 1/2″x96″ long, 4 pieces – 11 1/2″x30 3/4″ long ROOF
  • L – 500 sq of tar paper, 500 sq of asphalt shingles ROOFING
  • M – 2 pieces of 1×8 lumber – 263 1/4″ long, 4 pieces – 132″ long TRIMS

 One day

 

 

16×20 Gable Shed Roof Plans

building-the-rafters

Building-the-rafters

The first step of the roof project is to build the rafters for the trusses. Cut both ends of the 2×6, as shown in the diagram. In addition, make birds mouth cuts to the rafters, so that they fit to the top plates in a proper manner.

assembling-the-trusses

Assembling-the-trusses

Lay the rafters on a level surface and attach the bottom components. Make sure you make 60 degree cuts to both ends of the bottom rafters. Leave no gaps between the components for a neat result.

gable-end-supports

Gable-end-supports

Fit 2×4 supports to the trusses that are placed at both ends of the roof. You need to install these supports so the siding panels can have a frame to lock to.

regular-trusses

Regular-trusses

For the rest of the trusses, you fit just a few supports, as shown in the diagram.

Fitting the gussets

Fitting the gussets

Use 1/2″ plywood for the gussets. Mark the cut lines on the sheet and then get the job done with a saw. Attach the gussets over the joints and lock them into place with 1 5/8″ screws. The gussets will lock the frame of the trusses together tightly.

Fitting the trusses

Fitting the trusses

Fit the trusses to the top of the 16×20 shed. Fit the trusses with more supports to the gable ends. Fit the rest of the trusses to the top of the shed, every 24″ on center. Use a spirit level to plumb the trusses and lock them into place with rafter ties.

Gable end panels

Gable end panels

Use T1-11 siding for the gable ends of the shed. Mark the cut lines on the sheets and then get the job done with a saw. Smooth the edges with sandpaper for a professional result. Align the edges flush and secure the panels into place with 6-8d nails.

Building the overhangs

Building the overhangs

Assemble the overhangs for the shed from 2×6 lumber rafters and 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 shed. Align the edges flush, drill pilot holes and insert 3 1/2″ screws to lock them into place tightly.

Fitting the roof sheets

Fitting the roof sheets

Cut the roofing sheets from 3/4″ plywood and attach them to the rafters. Align the edges flush and lock the sheets into place tightly, using 1 5/8″ screws, every 8″ along the rafters.

Fitting the side roof trims

Fitting the side roof trims

Fit the 1×8 trims to the sides of the roof. Cut the trims at the right dimensions and then lock them into place with 2″ brad nails.

Front and back roof trims

Front and back roof trims

Build the trims for the front and back of the shed from 1×8 lumber. Make 30 degree cuts to both ends of the trims and lock them into place with 2″ brad nails, after aligning everything with attention.

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. Fit the side drip edges over the roofing felt, while the bottom drip edges should be fit under.

Afterwards, attach the asphalt shingles to the roof, starting with the left bottom side of the roof. Read the manufacturer’s instructions to understand how to install the shingles into place properly.

16x20 Shed Plans - Side view

16×20 Shed Plans – Side view

This shed is the ideal choice if you want to build a workshop. In addition, you make a few modifications to my plans and fit a garage door to the front of the shed. In this manner, you can use the shed for much more purposes.

16x20 Shed Plans

16×20 Shed Plans

Don’t forget to take a look over PART 1 and PART 3 to learn how to build the frame of the shed, as well as how to frame the double front doors. This is a straight forward project, so you shouldn’t feel intimidated by its complexity. After you get the building permit (if required) you can start the project.

 

 

This woodworking project was about 16×20 gable 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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