Building a shed floor on concrete is not difficult, but it requires some diligence and patience. Lay the foundation, set your corner posts and center a-frame supports, then attach the 2×6 joists to create the floor. Finally, you can add plywood sheets over the joists to build your shed floor.
Building a shed floor on concrete is an important step in the construction process. It provides the foundation for the shed’s walls and roof, as well as support for the insulation material needed to keep the inside temperature comfortable.
If you plan on building your shed on a concrete slab, it is important to build the floor first before laying the slab. The floor foundation is constructed with 2×6 pressure treated lumber boards and 2x4s, as well as 2×6 pressure treated lumber posts. The joists must be level and square, because they will provide the framework for your floor. The frame should be constructed in such a way as to fit as closely against the two adjacent walls as possible
A shed can be a great way to add extra storage space to your home, and you can build it right on top of your concrete pad. However, there is a key difference between building a shed on concrete and on wood; that difference is the way that you have to secure the flooring system. If you built this flooring system in the same way you would build one for a wood deck, you’d soon find that it would bow up and out of square. That’s because when we are building our shed floors, we use 2×6 joists, which makes them much more flexible than 2x4s or 4x4s that are required for framing an exterior wall. When we attach those 2x6s directly to the concrete pad using screws or nails, then they cannot move anywhere, as they normally do with conventional wood framing systems.
“Building a”, “shed floor on concrete”, “is slightly different than buliding a shed floor on a wood deck. If you were to build the shed floor in the same way you would a wood deck, using 2×6 joists and a plywood floor, your shed floor would more than likely soon bow up and out of square. Since you are building on a concrete pad, it would be impossible to pre-drill the holes in the floor joist to connect them to the concrete with rebar or J-bolts because they’re not laying on top of the pad. Furthermore, there is no way to attach them to the concrete by use of screws or nails.
You will need to construct your floor on top of the concrete pad, not in place. Use 1×6 joist for this purpose, since they are thinner than 2×6’s and will provide a more stable platform for the shed floor framing. Attach these joists to the concrete using screws, since it will be difficult to use nails or other fasteners that go into holes drilled in the concrete. If you don’t have a hammer drill, rent one from your local hardware store before beginning this project; it makes drilling holes through metal much easier than trying to push them through with only regular strength and hand strength alone.
Don’t attempt to build a shed like a deck! The technique described here works much better.
Before we get into the details of how to build a shed floor, let’s first address the question of whether or not it’s possible. Is building a shed on concrete even an option? The answer is yes! You can build a shed on concrete in the same way you would build one on top of any other surface. There are slight differences, but for all intents and purposes, it’s exactly the same process.
The basic technique for building a shed floor involves digging down far enough so that your structure will have no problem sitting directly on top of the ground underneath it. To do this, though, you’ll need some extra dirt around your foundation—and more importantly: support.
Final words
If you follow these steps and use the tips above, you should have a strong shed floor that will serve you for years to come. Remember to always do your own research so you know exactly what materials and tools are necessary for your specific project, and happy building.
