16x20 Lean To Shed Plans | PDF Download

This step by step diy project is about 16×20 lean to shedplans. This large storage shed with a lean to roof is ideal if you want to build it next to the property line. In addition, compared to a gable or barn shed, this lean to is easier and cheaper to build. Make sure you check the local codes and make adjustments to the plans, if required. Take a look over the rest of mywoodworking 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. See all my Premium Plans HERE.

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16×20 Lean To Shed Plans

Building-a-16×20-lean-to-shed

Cut List

A– 10 pieces of 4×4 lumber – 120″ longSKIDS
B– 2pieces of 2×8 lumber– 240″ long, 16 pieces – 189″longFLOOR FRAME
C– 8 pieces of 3/4″ plywood – 48″x96″ long, 4 pieces – 48″x48″ longFLOORING
D – 4 pieces of 2×4 lumber – 120″ long, 20 piece – 91 1/2″ long, 1 piece – 233″ long BACK WALL
E –2 pieces of 2×4 lumber – 185″ long, 1 piece – 192″ long, 13 pieces of 2×4 lumber – 86 1/2″ long 2xSIDE WALL
F – 2 pieces of 2×4 lumber – 72″ long, 1 piece – 240″ long, 1 piece – 233″ long, 14 pieces – 91 1/2″ long, 2 pieces – 78 1/2″ long, 8 pieces – 7 1/2″ long, 2 pieces of 2×6 lumber – 99″ longFRONT WALL
G – 2 pieces of 2×4 lumber – 240″ long, 18 piece – 32 1/4″ long TOP BACK WALL
H – 17 pieces of 5/8″ T1-11 siding – 4’x8′ long, 5 pieces – 35 1/4″ long, 1 piece – 48″x16″ longSIDING

Shopping List

4 pieces of 4×4 lumber – 10′
2 pieces of 2×8 lumber – 20′
16 pieces of 2×8 lumber – 16′
10 pieces of 3/4″ plywood – 4’x8′
5 pieces of 2×4 lumber – 20′
6 pieces of 2×4 lumber – 16′
10 pieces of 2×4 lumber – 10′
50 pieces of 2×4 lumber – 8′
2 pieces of 2×6 lumber – 10′
20 pieces of T1-11 siding – 4’x8′
rafter ties
joist hanger
1 5/8″ screws
2 1/2″ screws, 3 1/2″ screws
framing nails
wood filler,wood glue, stain/paint

Tools

Hammer, Tape measure, Framing square, Level

Miter saw, Drill machinery, Screwdriver, Sander

Safety Gloves, Safety Glasses

Time

One week

PART 1: 16×20 Lean to Shed Plans
PART 2: 16×20 Lean to Shed Roof Plans
PART 3: 16×20 Lean to Shed Doors Plans

How to build a 16×20 Lean to Shed

Floor frame

The first step of the large shed project is to build the floor frame. Cut the components at the right dimensions and then lay them on a level surface. Use 2×8 lumber for the joists. Drill pilot holes through the rim joists and then insert 3 1/2″ screws into the perpendicular beams. You can use joist hangers, as well. Place the joists every 16″ on center, as in the diagram. Check if the corners are right angled and make adjustments, if necessary. Measure the diagonals and make sure they are perfectly equal.

Fitting the skids

Fit 4×4 skids under the floor frame. Align the edges and use rafter ties to secure the skids to the frame of the floor. Select the right location for the shed and then remove the vegetation layer. Compact a thick layer of gravel and make sure the surface is level. Alternatively, you can use posts and footings to secure the floor frame into place. Read the local building codes for the best choice.

Attaching the floor sheets

Building the shed wall frame

Side-wall-frame

Build the side walls from 2×4 lumber. Cut the components from 2×4 lumber at the right dimensions. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Make sure the corners are square and place the studs every 16″ on center. Place double studs at both ends of the wall frames, as shown in the diagram.

Back-wall-frame-16×20-shed

I designed the back wall frame so that it is made from two equal sections. Use 2×4 lumber for the studs and plates. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 16″ on center, align the edges with attention and make sure there are no gaps between the components.

Assembling-the-back-wall-frame

Next, you need to assemble the back wall frame, as shown in the diagram. Attach the 2×4 top plates to the wall sections. In addition, lock the two sections together with 2 1/2″ screws. Drill pilot holes through the top plate and insert 2 1/2″ screws into the sections.

Front-wall-frame

Build the front wall for the lean to shed. Leave a 8′ opening for the double doors. Use 2×6 lumber for the headers. Sandwhich a piece of 1/2″ plywood between the headers, so you can enhance the rigidity of the structure. Make sure you follow the instructions in the diagram for a neat result.

Assembling the shed structure

Assembling the shed frame

Fit the front and the back walls to the floor of the shed. Align the edges with attention and then plumb them with a spirit level. Drill pilot holes through the bottom plates and insert 3 1/2″ screws into the floor. Next, install the side wall frames, as shown in the plans. Insert screws through the bottom plates into the floor. Moreover, lock the adjacent walls together tightly with 2 1/2″ screws.

Top back wall

The next step of the project is to build the top frame for the back wall. Cut the components at the right dimensions and then assemble the frame. 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 corners are square.

Fitting the top back wall

Attach the frame to the back of the shed. Align the edges with attention, drill pilot holes and insert 3 1/2″ screws to secure it into place tightly.

Fitting the siding sheets

Front wall siding sheets

Fit the T1-11 siding sheets to the front of the shed. As you can see in the diagram, you need to make a few cuts around the door opening. Leave no gaps between the sheets and then insert 6d nails, every 8″ along the framing.

Side siding sheets

Fit the T1-11 siding sheets to the sides of the shed, as well. Leave no gaps between the sheets.

Back wall siding sheets

Attach the siding sheets to the back of the shed, using the same techniques described above.

16×20 lean to shed plans free

You should check out PART 2 of the project, so you learn how to build the lean to shed roof. Check out PART 3 of the project so you learn how to build the double doors and how to fit the decorative trims.

16×20 lean to shed plans – back view

This large shed is study and it is very efficient, in terms of costs. Moreover, you can save some space, as you can build it next to the property line or to an already existing building.I have lots of other shed projects on the site so I recommend you to browse through all alternatives before starting the building project. See all my shed projects HERE.

If you want this project as a PDF file, with just 1 Cut list and 1 Shopping list, please check out the GET PDF PLANS bellow.

This woodworking project was about 16×20 lean to shedplans 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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Ovidiu

I've been a designer and a woodworker since I first developed consciousness.

16x20 Lean To Shed Plans | PDF Download | MyOutdoorPlans (2024)

FAQs

Is it cheaper to build lean-to shed? ›

In most cases, you can expect to pay between $14 and $18 per square foot for a lean-to structure, depending on size and complexity. These lean-to structures are typically constructed as additions to an already present structure, making them an easy, cost-effective way to change the look and feel of your metal building.

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How many square feet is a 16x20 shed? ›

Square footage: 320 sq. ft.

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How much does it cost to build a 16x24 shed? ›

16×24 shed prices range from $13,484 to $20,643 and above, depending on building design, style, siding, add-ons, and more.

How many 2x4 do I need for a 12x16 shed? ›

Cut two 2 x 4's lumber to 15'-5” as top and bottom plate, then a full 16' 2 x 4 as the double top plate. then cut 12 2 x 4's to 7'-5 3/4” for the wall studs. The single door studs are 6'-3 ½” in length.

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What is the best base for a lean-to shed? ›

Skid Foundation

Virtually all prefabricated sheds (those delivered fully constructed) are built on a base of skids. It's never recommended to place shed skids or any type of fully wood shed foundation directly on the ground; the bottom of the shed should always be placed on a secondary base, such as gravel or concrete.

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What is the best foundation for a lean-to shed? ›

Using a gravel pad for a shed base is the best option for your shed foundation. Gravel is permeable and allows water to drain through it without eroding the foundation or pooling up. Gravel will also keep your shed at ground level and is a good option if you are building a shed foundation on a sloped surface.

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How much does it cost to build your own 12x16 shed? ›

Generally, a 12×16 shed costs anywhere from $2,000 to $8,000 depending upon whether it is DIY or prebuilt. The pricing is affected also by the style, type of roofing, or other special customizations.

Are prefab sheds worth it? ›

By opting for a pre-built shed, you can save yourself considerable time when planning, measuring, cutting, and assembling a storage solution quickly or have limited DIY project time available to complete projects yourself.

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Does a 12x16 shed need a foundation? ›

Like any portable structure, a 12×16 shed needs a place to be set. There are multiple foundation options available for a 12×16 shed to be placed on. Let's look at the most common type of shed foundation options.

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Should stud spacing be 16 or 24 in a shed? ›

Stud Spacing

Another important factor is studs, which are generally required to be no further than 16 inches apart in most homes. Within sheds, though, some builders will stretch this to 24 inches to save on their costs, and because building codes are not the same for these buildings.

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Should a shed floor be 2x4 or 2x6? ›

Should I use 2×4 or 2×6 for a shed floor? 2×6 is the standard size used in storage sheds as it can support 53lbs per linear foot of uniform load. 2×8 is another size commonly used in sheds to store heavier items. As mentioned before, 2x4s should only be used for lightweight storage.

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What is the cheapest way to build a shed? ›

If you want to build a budget-friendly shed, opting for a classic wooden structure will be the most affordable option, along with styrene glazed windows, with roofing felt and panels. If you maintain it yearly and take good care of it, a cost-effective shed can be extremely long-lasting and durable.

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What is the cheapest style of shed to build? ›

When planning cost-effective construction, opt for straightforward shed designs that don't require complex angles or special tools. A rectangular or square shape with a single-pitched roof is not only easier to build but also more budget-friendly.

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Is it cheaper to build a shed or buy one already built? ›

You may pay less money per square foot to build a shed because you're saving on labor costs. Building a shed gives you more creative control and budget control. Buying a shed saves you time. You don't have to worry about the cost of materials.

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Does a lean-to need foundations? ›

Generally speaking, bigger and heavier conservatories require deeper foundations. A small single story wooden lean-to with lightweight glass will require much shallower foundations than a more ornate Orangerie-style extension.

Are shed roofs cheaper to build? ›

Yes, a single pitch roof is cheaper compared to other types of roofs because the shed used in such roofs uses only half of the materials compared to gable roofs.