20×20 Clerestory Shed – Free Shed Plans and Drawings

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This step by step diy project is about 20×20 clerestory shed 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 Shed with Middle Wall Plans

Building a 20x20 clerestory shed

Building a 20×20 clerestory shed

 

  • A – 12 pieces of 6×6 lumber – 120″ long SKIDS
  • B – 2 pieces of 2×6 lumber – 240″ long, 16 pieces – 237″ long, 4 pieces – 13 3/4″ long, 13 pieces – 14 1/2″ long FLOOR FRAME
  • C – 10 pieces of 3/4″ plywood – 48″x96″ long, 5 pieces – 48″x48″ long FLOOR
  • D – 2 pieces of 2×4 lumber – 240″ long, 2 pieces – 192″ long, 1 piece – 12″ long, 15 pieces – 110 1/2″ long, 10 pieces – 32″ long, 6 pieces – 31 1/2″ long, 3 pieces – 26 1/2″ long, 2 pieces – 78 1/2″ long, 10 pieces of 2×6 lumber – 39″ long SIDE WALL
  • E – 3 pieces of 2×4 lumber – 240″ long, 18 pieces – 86 1/2″ long SIDE WALL
  • I – 2 pieces of 4×4 lumber – 162″ long, 3 pieces – 119 1/4″ long, 2 pieces of 2×10 lumber – 233″ long, 16 pieces of 2×4 lumber – 33 1/4″ long, 2 pieces – 240″ long MIDDLE WALL
  • G – 2 pieces of 2×4 lumber – 114 3/4″ long, 9 pieces – 86 1/2″ long, 4 pieces – 37 1/2″ long, 2 pieces – 36″ long, 4 pieces – 2″ long, 4 pieces of 2×6 lumber – 39″ long FRONT WALL
  • G – 1 pieces of 2×4 lumber – 114 3/4″ long, 1 piece – 8 1/2″ long, 1 piece – 10 1/4″ long, 8 pieces – 2″ long, 2 pieces – 78 1/2″ long, 4 pieces – 86 1/2″ long, 2 pieces of 2×6 lumber – 99″ long FRONT WALL
  • H – 2 pieces of 2×4 lumber – 114 3/4″ long, 9 pieces – 86 1/2″ long 2xBACK WALL
  • J – 1 piece of 2×4 lumber – 114 3/4″ long, 1 piece – 124 1/2″ long, 1 piece – 47″ long,1 piece – 41 1/4″ long, 1 piece – 34 1/2″ long, 1 piece – 27 3/4″ long, 1 piece – 21″ long, 1 piece – 14 1/4″ long, 1 piece – 7 1/2″ long  2xTOP WALL
  • J – 1 piece of 2×4 lumber – 114 3/4″ long, 1 piece – 125 1/4″ long, 1 piece – 70 3/4″ long, 1 piece – 65 1/4″ long, 1 piece – 58 1/2″ long, 1 piece – 51 3/4″ long, 1 piece – 44 3/4″ long, 1 piece – 38″ long, 1 piece – 31 1/4″ long, 1 piece – 24 1/2″ long, 1 piece – 23″ long 2xTOP WALL

 One week

 

 

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How to build a 20×20 shed

Floor frame - 20x20 clerestory shed

Floor frame – 20×20 clerestory shed

The first step of the project is to frame the floor for the 20×20 clerestory shed. Therefore, use 2×6 lumber for the joists and cut them at the dimensions shown in the diagram. Drill pilot holes through the rim joists and insert 3 1/2″ screws into the perpendicular components. Place the joists every 16″ on center. Align the edges flush and make sure the corners are square. If you are going to build the shed on a concrete slab, you can skip the floor plans.

Fitting the floor skids

Fitting the floor skids

Select the location for the shed to suit your needs and making sure it complies with the local building codes. Level the surface with attention and then compact a thick layer of gravel. Fit the 6×6 skids and then attach the floor frame. Align the edges flush and use rafter ties to lock them together tightly. If the local codes don’t allow you to use 6×6 skids, you might have to pour footings.

Floor blockings

Floor blockings

Fit 2×6 blockings to the floor frame. The blockings are needed to provide support for the middle wall frame. Drill pilot holes through the joists and insert 3 1/2″ screws into the blockings.

Floor sheets

Floor sheets

The next step of the project is to lay the 3/4″ plywood sheets to the floor of the shed. Align the edges flush and leave no gaps between the sheets for a professional result. Insert 1 5/8″ screws, every 8″ along the joists, for a professional result. Follow the pattern shown in the diagram for a neat result. Use pressure treated plywood, because the sheets will be exposed to moisture.

Middle wall frame

Middle wall frame

Next, we will be building the middle wall frame for the clerestory shed. Therefore, use 4×4 lumber for the supports, 2×10 for the header and 2x4s for the wall frame section. Use 1/2″ plywood between the double 2×10 header beams. Add glue to the joints and insert 2 1/2″ screws from both sides. Assemble the wall frame with 3 1/2″ screws, after drilling pilot holes. Use post to beam connectors to secure the header on top of the posts.

Fitting the middle wall partition

Fitting the middle wall partition

Fit the middle wall to the floor of the 2ox2o shed floor. Plumb the wall with a spirit level and use temporarily braces to hold it into place. Use post anchors to secure the posts to the floor of the shed.

Side wall frame

Side wall frame

Next, frame the short side wall for the 20×20 shed. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 16″ on center and make sure the edges are flush. Use double studs at both ends of the wall with pieces of 1/2″ plywood between them.

Side wall with window frame

Side wall with window frame

Build the opposite side wall frame for the shed. Cut the plates and the studs from 2×4 lumber. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. You can also see that I added 2 openings for 36″x36″ windows and a opening for a 36″x80″ door. All the headers are made from 2 pieces of 2×6 lumber with 1/2″ plywood glued between them.

Fitting the side walls - 20x20 clerestory shed

Fitting the side walls – 20×20 clerestory shed

After assembling the side walls, I recommend you to fit them to the floor of the shed. Plumb the walls vertically and align the bottom plates to the rim joists. Drill pilot holes and insert 3 1/2″ screws to lock the walls into place tightly. Use temporarily braces to lock the walls into place till you add the rest of the wall frames.

Back wall frame - 20x20 shed

Back wall frame – 20×20 shed

Next, we need to frame the wall frames for the back of the shed. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 16″ on center.

Front wall with door

Front wall with door

Next, build the wall frame for the front of the shed that features the garage door. Use 2×6 lumber for the double header and 2×4 lumber for the rest of the components. Assemble everything with 3 1/2″ screws, using the same techniques described above.

Front wall with window

Front wall with window

Build the other section for the front of the shed. This wall features a 36″x36″ window.

Assembling the frame of the clerestory shed

Assembling the frame of the clerestory shed

Fit the four wall frames to the floor of the shed. Align the edges flush and plumb them with a spirit level. Drill pilot holes though the bottom plates and insert 3 1/2″ screws to lock the walls into place tightly. Moreover, you have to lock the adjacent walls together tightly with 3 1/2″ screws. Make sure the edges are flush and the corners are square.

Top front wall 2

Top front wall 2

Next, we need to assemble the lean to wall frames that go to the front and to the back of the clerestory shed. Use a miter saw to make the angle cuts and then lay all the components on a level surface (the shed floor is a good place to start). Drill pilot holes through the plates and insert 3 1/2″ screws into the studs.

Top frame 1

Top frame 1

Build the other top wall frames for the clerestory shed.

Fitting the front and back gable wall frames

Fitting the front and back gable wall frames

Fit the frames to the front and back of the shed, as shown in the image. Align the edges flush and drill pilot holes. Insert 2 1/2″ screws to lock the frames to the bottom walls and to the middle partition.

Build a 20x20 Clerestory Shed Plans

Build a 20×20 Clerestory Shed Plans

 

20x20 Clerestory Shed Plans front view

20×20 Clerestory Shed Plans front view

If you like the unique design of this shed with middle wall, my free set of plans will help you make it a reality on your property. The shed features a 8′ wide garage door and a side 3” door, so you can have an easy access both with large items or by yourself. You can use this shed for storage or as a workshop. You can add insulation and electricity, and make a rustic tiny house out of it.

20x20 Clerestory Shed Plans - back view

20×20 Clerestory Shed Plans – back view

Make sure you take a look over PART 2 of the project so you learn how to build the gable roof 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 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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One Comment »

  1. Chris Griffith at - Reply

    Greetings,

    I am hoping to build a clerestory shed that measures 12’x16′ and is 12′ at the peak, as this is the max height allowed in my county.

    Thank you

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