Skip to content
Father's Day Sale + Free Shipping on most items! Ends 6/19.
Father's Day Sale + Free Shipping on most items! Ends 6/19.
how to build a lean to shed

How to Build a Lean to Shed

If you've landed here, it's probably because you've got a burning desire to build a shed but aren't quite sure where to start. Well, you're in luck!

From our experience at Homestead Supplier, we've seen countless individuals transform their backyards with our Cedarshed Lean To Storage Shed Kit. And today, we're going to walk you through the process of how to build a lean to shed, step by step.

Building a Lean to Shed

Step 1: Lay The Foundation

We can't stress enough the importance of starting with a strong and level foundation with any kind of shed construction. A lopsided or weak base can lead to structural issues down the line, and nobody wants that. It's imperative that you know the correct way to lay a foundation.

First things first, scout your yard for the ideal location. Look for a spot that's flat and free from major obstructions. Once you've chosen your site, it's time to roll up those sleeves and get to work.

Begin by clearing the area thoroughly. This means removing any rocks, roots, or other debris that might interfere with the foundation. It's essential to have a clean slate.

Next, decide on the type of foundation you want. According to our research, there are two popular choices: a concrete slab or a wooden platform. A concrete slab is durable and offers excellent stability, especially for larger sheds.

build a lean to shed

Pouring concrete might require a bit more effort and time, but the payoff in longevity and sturdiness is worth it.

On the other hand, a wooden platform is quicker to install and can be a suitable choice for smaller sheds or those on a tighter budget. Make sure that the wood is treated to resist moisture and pests, and make sure it's securely anchored to the ground.

Whichever option you choose, remember to keep it level. Use a spirit level to check and double-check. A level foundation ensures that your shed's weight is evenly distributed, preventing any unwanted tilts or strains.

Step 2: Unpack And Organize

Start by finding a spacious area where you can spread out. This could be your driveway, garage, or even a patch of lawn. After putting together our fair share of sheds, we've found that having ample space will allow you to see everything clearly and move around without tripping over scattered parts.

Now, it's time to open up that kit. As you unpack, you'll notice a variety of components, from large panels to tiny screws. While it might be tempting to jump right in, take a moment to sort everything out.

Grouping similar items together not only makes the assembly process more efficient but also reduces the chances of misplacing crucial parts.

For instance, keep all the screws in one container, the panels stacked together, and the smaller accessories in a separate box. This systematic approach ensures that when you reach for a specific item, it's right where you expect it to be.

Next, grab the inventory list that comes with the kit. This list is your roadmap, detailing every single piece that should be in the box. Go through each item, ticking them off as you verify their presence. It might seem tedious, but trust us, it's a step you won't regret.

Ensuring that nothing's missing at the outset can save you from unexpected halts later on.

easy lean to shed

Step 3: Joist Box Assembly

The joist box is the skeleton of your shed's floor, providing the necessary support and structure. Think of it as the bridge between your foundation and the floor, ensuring stability and strength.

Begin by identifying the joist box components from your organized piles. Typically, these will include the outer rim joists and the inner floor joists. Lay them out in the shape of your shed's footprint.

Connect the outer rim joists first, forming a rectangle or square, depending on your shed's design. Secure them at the corners using the provided fasteners. Once your perimeter is set, it's time to install the inner floor joists.

These joists should run parallel to each other and be evenly spaced. Attach each joist to the rim using the designated brackets or screws.

It's crucial that the entire joist box is level. Use your spirit level to check multiple points, making any necessary adjustments. A level joist box will lead to a level floor, which is vital for the overall stability of your shed.

Step 4: Floor Assembly

With the joist box in place, you're ready to lay down the floor. This step will give your shed a solid surface, protecting your stored items from ground moisture and pests.

Start by selecting the floor panels from your kit. These panels should fit snugly within the joist box frame. Lay the first panel down, ensuring it aligns perfectly with the edges of the joist box. Secure it in place using the appropriate screws or nails, making sure it's firmly attached to the joists below.

Continue this process with the remaining floor panels, working your way across the joist box. As you lay each panel, check that there are no gaps or overlaps. The panels should come together seamlessly, creating a smooth and even floor surface.

Once all the panels are secured, walk around and test the floor's sturdiness. It should feel solid underfoot, with no noticeable flex or movement.

lean to shed construction

Step 4: Assemble The Frame

Kick things off with the back wall. Lay out the panels and vertical supports on the ground, aligning them according to the design. The beauty of our kit is that we've made things straightforward for you.

Those pre-drilled holes? They're your best friends. They ensure that every component fits just right, eliminating the guesswork. Attach the panels to the vertical supports using the included screws, ensuring a tight fit.

Once the back wall is assembled, lift it into position against the floor assembly. It's helpful to have an extra pair of hands for this step. Once upright, secure the bottom of the wall to the floor, ensuring it's perfectly vertical.

Next up, the side walls. The process is similar to the back wall. Lay out the panels, attach them to the supports, and then lift and secure them in place. The side walls provide lateral support, so it's essential they're firmly anchored to both the floor and the back wall.

Lastly, it's time for the front wall. This wall might have additional features like doorways or windows, so pay close attention to the assembly instructions. Once assembled, lift it into position and secure it to the floor and side walls.

Step 5: Attach The Roof

Elevating the convenience of shed-building, our kit comes with pre-built roof sections, making this step a breeze. The roof isn't just an aesthetic touch; it's the guardian of your shed, shielding everything inside from the unpredictable whims of the weather.

Begin by identifying the pre-built roof sections. These sections have been designed to fit seamlessly onto your shed's frame, eliminating the need for individual panel placements.

how to build a lean to roof on a shed

Starting from one end, position the first roof section onto the rafters, ensuring it aligns perfectly with the edges of the frame. Once in place, secure the section using the provided fasteners, anchoring it firmly to the underlying rafters.

Progressively, move on to the next sections, ensuring each one snugly fits against its predecessor. The design ensures a watertight seal, so there's no need to worry about gaps or leaks.

Now, let's talk about shingles. For those who prefer a hassle-free experience, we offer the option of having roof shingles pre-attached to the sections. This not only saves time but also guarantees a professional finish. If you've opted for this, your job here is pretty much done!

But, if you've chosen to add shingles yourself, make sure they're laid in an overlapping pattern, starting from the bottom and working your way up. This assists with optimal water runoff, keeping the interior of your shed dry.

Step 6: Add The Finishing Touches

Start with the doors. Depending on your kit, you might have a single door or double doors. Align the door(s) with the pre-cut opening in the front wall. Using the provided hinges, attach the door ensuring it swings open and closed smoothly.

Remember to secure the latch or handle, which not only facilitates access but also provides an added layer of security for your shed's contents.

Next, the windows. These are more than just sources of natural light; they're little peepholes that connect your shed's interior with the outside world. Position the windows in their designated openings, ensuring they sit flush against the frame.

Once in place, secure them using the provided screws or fasteners. If your windows come with latches or locks, make sure they're functional, offering both ventilation and security. 

shed lean to addition

Lastly, consider any additional accessories you've chosen. This could range from shelving units and storage hooks to decorative elements like planters or weather vanes. Each accessory serves a purpose, whether it's enhancing storage capacity or adding a touch of aesthetic charm. Install them as per the instructions, ensuring they're securely fastened and positioned optimally. 

If you want to add anything else at this stage, we'd recommend learning how to build a wooden ramp for a shed and how to build a loft in a shed.   


Building a shed might seem daunting at first, but with the right tools and guidance, anyone can do it. And with a Cedar Shed Kit from Homestead Supplier, the process is smoother than ever.

And if you're in the market for more than just lean to shed kits, Homestead Supplier is your go-to. We supply shed kits of all kinds, from 8x10 sheds to 12x16 sheds.

If you want to learn more, why not check out these articles below:

Previous article How Much Does It Cost to Build a Shed?

Leave a comment

Comments must be approved before appearing

* Required fields


We are located in central California and sell online only.

Free Shipping

When you spend $200+

Review Rating

Thousands of
Satisfied Customers.

Give Us A Call


Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare