CONTENTS
Shed Flooring
The key to building a great shed starts from the bottom, with its flooring. It's not simply about laying down a base; it's about constructing a strong and practical space that suits its intended use. Whether it's for storing heavy items, serving as a space for hobbies, or acting as a quiet getaway, selecting the appropriate flooring is important as it defines the foundation for all that follows.

Shed Base by Henry Burrows, Flickr (CC BY-SA 2.0)
Does a Shed Need a Floor
Does a Shed Need a Floor
A shed need a floor as it provides several benefits that enhance the shed's functionality, durability, and overall usefulness. A proper floor can protect stored items from moisture coming up from the ground, preventing damage and deterioration over time. It also adds structural integrity to the shed, making it more stable and able to withstand the weight of heavy equipment or storage items. Additionally, a floor can improve insulation, keeping the interior of the shed cooler in the summer and warmer in the winter, creating a more favorable environment for whatever you choose to store inside.
Best Flooring for a Shed
Best Flooring for a Shed
Choosing the right flooring for your shed largely depends on its intended use and construction. For sheds designed to store heavy items, a strong and even floor is essential to support the weight and maintain stability. When selecting materials for shed flooring, there are several good options to consider:
Concrete is a popular flooring choice for sheds due to its strength, durability, and low maintenance requirements. It provides a solid surface that can withstand heavy loads without cracking or shifting over time. Plus, it's resistant to moisture and pests, making it an ideal option for long-term shed use.
Pressure-treated plywood is a sturdy material made more durable and resistant to rot, decay, and pests through a chemical treatment process. It makes an excellent choice for shed flooring because of its enhanced durability and resistance to environmental conditions that typically cause wear and tear.
OSB (oriented strand board) is another type of engineered wood product that makes a great option for shed flooring. It's composed of heat-cured adhesives and layers of thin, wood strands compressed together to create a strong and durable material. OSB is relatively inexpensive, making it an attractive option for those on a budget, but it's also known for its high resistance to moisture and pests.
Material Comparisons
Material Comparisons
Concrete is strong and durable, resisting heavy loads and harsh conditions, but it's costly and slow to install, often requiring special equipment or professional help. On the other hand, wood alternatives offer comparable strength and durability more affordably. They're also easier to install and provide a more comfortable surface for standing or walking on for longer periods.
When choosing between plywood and OSB for your shed floor, it's important to consider the specific conditions and needs of your shed. Plywood is known for its resistance to moisture, making it a great option for areas with high humidity or prone to flooding. OSB, on the other hand, may be better suited for areas with more pests as it has a higher resistance to insects and rodents.
Options for Shed Floor Covering
Options for Shed Floor Covering
A strong shed requires a solid foundation to prevent damage from sitting on bare ground, which can lead to rot. For flooring, here are the suitable materials you can choose from:
1. Finished flooring options
1. Finished flooring options
- Vinyl Roll Flooring: These vinyl mats can be easily rolled out over your floor and trimmed to fit your space perfectly. They're affordable, durable, and waterproof.
- Vinyl Tiles and Planks: These peel and stick tiles or planks are also easy to install and come in various designs, colors, and patterns to match your desired aesthetic. They're also waterproof and offer a comfortable surface for long hours of standing.
Horse stall mats are another option for shed flooring, especially if you plan on using your shed as a workshop or gym. These durable rubber mats provide cushioning for standing and impact resistance, making them perfect for activities that involve heavy equipment or movement.
Linoleum is a natural and eco-friendly option for shed flooring, made from linseed oil, wood flour, cork dust, and other renewable materials, making it a sustainable choice for your shed. However, it's important to note that linoleum can trap moisture if not properly installed or ventilated, which could lead to potential issues.
While not the most common option, carpet can be used as a shed flooring if you plan on using your shed as a cozy workspace or play area. It provides insulation and warmth, making it ideal for colder climates. However, keep in mind that it may not hold up well to heavy traffic and is more prone to staining and moisture damage.
If you're on a budget, painting your shed floor can be a low-cost and easy option. Just make sure to use a high-quality porch and floor paint that is resistant to moisture and heavy traffic. You can also get creative with patterns or stenciling for a unique look.
Laminate flooring is a popular choice for sheds due to its affordability and ease of installation. It's also resistant to moisture and can withstand heavy loads, making it a practical option for shed flooring.
Rubber flooring for sheds is another great option, especially if you plan on using your shed as a workshop or gym. These durable rubber mats provide cushioning for standing and impact resistance, making them perfect for activities that involve heavy equipment or movement.
Cork is not only a renewable resource that lends an eco-friendly vibe to any space, but it also offers natural insulation properties, which can help in moderating the temperature within your shed. It's also resistant to moisture and provides a soft and comfortable surface for walking or standing.
Interlocking tiles are a versatile option for shed floors as they can be easily installed and removed, making them ideal for temporary or seasonal sheds. They come in various materials such as rubber, PVC, and foam, and provide a comfortable surface to stand on while also protecting the underlying floor.
For a more permanent solution, consider applying an epoxy coating to your shed floor. This durable and water-resistant option is perfect for high-traffic areas and can withstand heavy loads.
2. Unfinished flooring options
2. Unfinished flooring options
If you prefer a more natural look or have a limited budget, there are also unfinished flooring options for your shed floor:
For a more permanent solution, consider applying an epoxy coating to your shed floor. This durable and water-resistant option is perfect for high-traffic areas and can withstand heavy loads.
While concrete may not be the most aesthetically pleasing option, it is durable and long-lasting. It also provides a stable base for heavy equipment and machinery in your shed.
If you want a rustic feel for your shed, untreated wood can be used as flooring. However, it is important to note that it may require more maintenance and can be susceptible to moisture and pest damage.
How to Build a Shed Floor
How to Build a Shed Floor
Step 1: Check Local Council Regulations on Floor Framing
Local building codes vary significantly, dictating the choice of materials, dimensions, and techniques for floor construction. Compliance with regional regulations might require anchoring the floor frame to concrete pillars or using lumber of a specified thickness for structural supports.
To ensure adherence to all relevant local regulations, it's advisable to consult with a building official or check the local planning authority's website before beginning your project.
Step 2: Choose your materials
For an efficient and organized approach to building a shed floor, preparing your materials in advance is essential.
Here are the materials required to construct the shed floor.
- Pressure-Treated Lumber: Essential for the floor joists and outer frame because it resists moisture and decay.
- Pressure-Treated Plywood: Used for the flooring surface due to its durability and resistance to moisture.
- Joist Hangers: To securely anchor the joists to the frame.
- Framing Nails & Exterior-Grade Screws: For assembling the frame and attaching the plywood floor.
- Wood Screws: Additional screws may be needed for reinforcing the structure where necessary.
Here are the recommended tools to have
- Measuring Tools: A tape measure for precise measurements and a carpentry pencil for marking cuts.
- Level: To ensure the base frame is perfectly horizontal.
- Chalk Line: Useful for marking long, straight lines across the plywood.
- Speed Square: For confirming right angles and guiding circular saw cuts.
- Saws: A circular saw for making straight cuts, a miter saw for precise angled cuts, and a jigsaw for any curved cuts or adjustments.
- Nail Gun & Palm Nailer: These tools speed up the process of driving nails, with the palm nailer handy for tight spaces.
- Safety Gear: Safety gloves and safety glasses to protect against splinters, dust, and flying debris.
Step 3: Measure and mark the layout
Use a measuring tape to determine the dimensions of your shed floor and mark it out on the ground using stakes and string. This will serve as a guide for building the floor.
Step 4: Build the frame
Using pressure-treated lumber, create a frame by securing beams along the perimeter of your marked area. The exact dimensions and spacing will depend on the size of your shed.
Step 5: Install the subfloor
Once the frame is in place, cover it with plywood or OSB (oriented strand board) to create a sturdy base for your flooring material.
Step 6: Choose and install your flooring material
Depending on your chosen material, follow the manufacturer's instructions for installation. This may involve laying down gravel, pouring concrete, or simply placing the flooring on top of the subfloor.
Step 7: Seal and protect
To ensure your shed floor lasts for years to come, consider sealing it with a waterproof sealant or paint to protect against moisture and damage from the elements.
How Thick Should a Shed Floor Be
How Thick Should a Shed Floor Be
- A concrete shed floor should be about 4 inches thick in order to provide enough strength and stability to support the weight of a shed and its contents.
- When using OSB for shed flooring, the recommended thickness is at least 5/8 inches.
- For those opting for plywood as a material choice for shed floors, the ideal thickness is at least 3/4 inches.
FAQ
FAQ
Can you put tile in a shed?
Yes, you can install tile in a shed if the subfloor is solid and level. However, it might not be the best or most cost-effective choice for shed flooring. Tiles are usually more expensive than other materials and require special tools and skills for installation. They can also crack or get damaged if heavy objects are dropped on them or if the shed is very moist.
How long will a shed floor last?
The lifespan of a shed floor can vary depending on the materials used, the climate and weather conditions in your area, and how well it's maintained. A properly constructed and waterproofed shed floor can last for decades. However, if the flooring is not adequately protected and exposed to moisture or extreme temperatures, it could start showing signs of wear and tear within a few years. Regular maintenance and quick repairs can help extend the life of your shed floor.
The weight capacity of a shed floor depends on the materials used and its construction. For example, a floor made of pressure-treated plywood can typically hold more weight than one made of untreated or composite wood. It's essential to consider the weight capacity when building your shed and ensure it can support the intended use, whether for storage or as a workspace.
What is shed floor joist spacing?
Shed floor joist spacing refers to the distance between each joist, which are the horizontal support beams that hold up the shed floor. The recommended spacing for shed floor joists is typically 16 inches on center, meaning there should be 16 inches of space between each joist. However, this can vary depending on the size and weight capacity of your shed and the materials used for the floor. It's crucial to follow local building codes and guidelines when determining shed floor joist spacing to ensure proper support and stability.
Does shed flooring need to be pressure treated?
While pressure-treated plywood is highly recommended for shed flooring, it's not always necessary. If your shed is in a location that's prone to moisture or pests, using pressure-treated wood can help prevent damage and rot, as it becomes moisture resistant. However, if your shed is in a dry area and not at risk of termites or other pests, untreated wood or composite materials may suffice.
How to protect underside of shed floor
The underside of your shed floor is just as important to protect as the top. Here are some tips for keeping it safe and secure:
- Use a moisture barrier: Place a layer of plastic sheeting or waterproof membrane between the ground and the floor joists to prevent water from seeping in.
- Elevate the shed: If possible, elevate your shed off the ground on concrete blocks or pavers to keep it away from moisture and potential pests.
- Install ventilation: Proper air circulation can help prevent excess moisture build-up under the shed floor. Consider installing vents in the walls or floors of your shed.
- Keep the area clean: Regularly clear out debris and vegetation around your shed to prevent any blockages or obstructions that could cause moisture build-up or attract pests.
- Use treated wood: If you're using untreated wood for the floor joists, make sure to treat them with a water-resistant coating to protect against moisture and decay.
Properly preparing and constructing your shed floor is important for your shed's longevity and functionality. The significance of a solid and well-protected shed floor cannot be overstated – it serves as the cornerstone for all your storage requirements.