20×20 Clerestory Shed Roof Plans

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This step by step diy project is about 20×20 clerestory shed roof plans. This is a large shed that features an unique roof and a middle wall with a huge opening. This shed is ideal for a workshop, as it features 3 large windows, a 8 ft garage door and a side door. The shed is easy to build with my free plans and you can save tons of money if you choose to build it as a DIY project instead of buying a retail one. 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.

 

 

Projects made from these plans

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20×20 Clerestory Shed Plans

Building a 20x20 clerestory shed

Building a 20×20 clerestory shed

 

  • K – 13 pieces of 5/8″ T1-11 siding – 48″x94″ long, 3 pieces – 24″x94″ long, 5 pieces – 48″x118″ long, 1 piece – 9 1/2″x24″ long, 2 pieces –  24″x18″ long, 2 pieces – 48″x36 1/2″ long, 2 pieces – 48″x56 3/4″ long, 2 pieces – 48″x80 3/4″ long, 2 pieces – 48″x60 1/2″ long, 2 pieces – 24″x30″ long, 5 pieces – 20″x48″ long SIDING
  • K – 1 piece of 2×6  lumber – 20 ft long LEDGER
  • L – 16 pieces of 2×6 lumber – 152 1/2″ long, 16 pieces – 141 1/4″ long RAFTERS
  • M – 2 pieces of 2×6 lumber – 152 1/2″ long, 7 pieces – 6 3/8″ long 2xOVERHANG
  • M – 2 pieces of 2×6 lumber – 141 1/4″ long, 5 pieces – 144 3/4″ long 2xOVERHANG
  • N – 4 pieces of 1/2″ plywood – 10″x96″ long, 2 pieces – 10″x48″ long, 2 pieces – 56 1/2″x10″ long, 1 piece – 8 1/2″x48″ long, 2 pieces – 8 1/2″x96″ long, 10 pieces – 48″x96″ long, 5 pieces – 48″x48″ long, 2 pieces- 46 1/4″x96″ long, 1 piece – 46 1/4″x48″ long ROOF SHEETS
  • O – 2 pieces of 1×8 lumber – 144 3/4″ long, 2 pieces – 152 1/2″ long, 6 pieces – 130 3/4″ long TRIMS
  • P – 600 sq ft f tar paper, 600 sq ft of asphalt shingles ROOFING

 One week

 

 

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How to build a 20×20 clerestory shed roof

Fitting the ledger boards

Fitting the ledger boards

First of all, we need to install the ledger to the structure of the clerestory shed. Therefore, lock the 2×6 beam to the shed frame using 3 1/2″ lag screws. Use a spirit level to check if the ledger is perfectly horizontal. In addition, clamp the ledger to the shed frame before drilling the pilot holes and insert the lag screws.

Side siding sheets - 20x20 shed

Side siding sheets – 20×20 shed

Use 5/8″ T1-11 siding sheets for the exterior walls of the shed. Cut the sheets at the right dimensions and then lay them to the side walls of the shed structure. Make sure the sheets are flush with the top of the wall frames. Leave no gaps between the sheets. Insert 8d nails every 8″ along the shed framing.

Tall side wall siding sheets

Tall side wall siding sheets

Attach the T1-11 siding sheets to the other side of the clerestory shed. Make the cuts around the door and window openings. Smooth everything with sandpaper.

Rafters

Rafters

Use 2×6 lumber for the rafters. Make the birdsmouth cuts to the rafters, as shown in the diagram. The cuts will help you fit the rafters into place properly.

Rafters for short side

Rafters for short side

Make the cuts to the other rafters for the clerestory shed. Use a miter saw to make the angled cuts and get consistent results.

Fitting the rafters to the tall side

Fitting the rafters to the tall side

Fit the rafters to the top of the shed frame. Place the rafters every 16″ on center and lock them to the top plates using rafter ties and 1 1/2″ structural screws.

Fitting the rafters to the short side of the shed

Fitting the rafters to the short side of the shed

Fit the rafters to the other side of the shed roof.

Cutting out the openings for the front wall

Cutting out the openings for the front wall

Attach the T1-11 siding sheets to the front of the clerestory shed. Align the edges flush and make the cuts around the roof and openings. Use 8d nails to secure the panels to the shed framing.

Back wall siding sheets - 20x20 shed

Back wall siding sheets – 20×20 shed

Attach the siding sheets to the back of the shed, as well. Leave no gaps between the panels, as well.

Overhangs for shed

Overhangs for shed

Next, build the overhangs for the front and back of the roof. Cut all the components as shown in diagram and assemble the overhangs with 3 1/2″ screws.

20x20 Clerestory Shed - fitting the overhangs

20×20 Clerestory Shed – fitting the overhangs

Fit the overhangs to the front ad back of the shed. Align the edges flush and insert 3 1/2″ screws to secure the overhangs into place tightly.

Roof sheets 2

Roof sheets 1

We are going to use 1/2″ plywood for the roof sheets. Cut all the sheets as shown in the diagram. Align the edges flush and leave no gaps between the sheets. Use 1 5/8″ screws to lock the panels to the rafters, every 8″ along the rafters.

Shed roof - part 2

Shed roof – part 2

Attach the plywood sheets to the other side of the shed, as well. Use 1 5/8″ screws to lock the sheets into place.

Panels - 20x20 shed

Panels – 20×20 shed

Next, attach the T1-11 siding panels to the top of the middle wall frame. Alternatively, you can install windows if you want more light inside the shed.

Roof trims - front and back

Roof trims – front and back

Use 1×8 lumber for the roof fascias. Align the edges flush and insert 8d nails to lock them to the overhangs.

Side roof trims

Side roof trims

Fit the fascia boards to the sides of the roof.

Roofing

Roofing

Install the roofing felt, starting from the bottom left of the roof. Secure the paper to the roofing, using a stapler. Make sure the tar paper overlaps at least 2”. Start the first course of shingles with a full tab, the second with 2 1/2 tabs, the third with 2 tabs, the forth with 1 1/2 tabs, the fifth with 1 tab, the sixth with half tab and the seventh with a 3 tabs. Add flashings, as well. Read the manufacturer’s instructions, so you can get the job done properly and have no roof leaks.

20x20 Clerestory Shed Plans - back view

20×20 Clerestory Shed Plans – back view

Make sure you take a look over PART 1 of the project so you learn how to build the shed structure and PART 3 to learn how to build the doors and how to attach the trims.

20x20 Clerestory Shed Plans

20×20 Clerestory Shed Plans

This 20×20 shed is large enough to store a lot of items, while it is still easy enough to build in a do-it-yourself style. However, I recommend you to check out the local codes before starting the project so you learn how to get the job done legally.

 

 

This woodworking project was about 20×20 clerestory 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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