Want to Save 20% off Any Shed Plan Purchase!

Signup For My 'Shed n Sight' Newsletter

and Get Your 20% off Promo Code To Use At Checkout.

Easy Diy Shed Building Plans

How To Build a Wooden Shed Floor

How to build a shed floor.How to build a shed foor

Having a sturdy shed floor is crucial to maximizing the life of your shed.  If the construction is not done properly, a multitude of problems will and can occur over the life of your shed.  Here are just a few:

  • Initial construction will be harder for the rest of your shed if you don't build the floor right.
  • Door can become warped.
  • Windows can leak.
  • Roofs can leak.
  • Dangerous conditions can continue to crop up.

storage shed with anchored floorWooden Shed Floors Should Be Anchored Down
shed floor/foundation layoutProper Shed Floor Construction is Crucial!

There is more than one way to build a shed floor and this is how I build my wooden shed floors.

The following instructions refer to different terms like band boards, rim joists, floor joists, and skids. If you are unsure of what those terms are please have a look a my shed floors page.

1. Check your local building codes if you haven't already to determine what type of anchoring you need to do for your shed.

When building your shed floor its a great idea to check your local building codes.

Chances are if you have applied for a permit you'll know the answer to this question already. Usually, there are two types of anchoring if you are not building on top of a concrete slab. One way is to anchor your shed to the ground using cable tie-downs, or anchoring it with your floor being fastened securely to posts which are sunk into the ground at a pre-determined depth in concrete.

Make sure whatever is required by your county that you follow their guidelines.

2. Gather the proper lumber to cut your floor joists, rim joists, and 2 two band boards and 4x4 skids. Cut all floor joists to proper length along with your 2 rim joists and two band boards and skids. Also, cut your 4"x 4" skids to length.

3. After cutting all lumber, mark off your two band boards for joist layout at 12" on center. Assemble the frame using 16d galvanized common nails, making sure to check each joist for crowning and install it with the crowned edge up. 

Building your shed floor on skids.

how to build a shed floorTaking Diagonal Measurements

4. Lay out your 4" x 4" skids properly spaced and lined up on your foundation, making sure they are level. Set the floor frame on top of the skids and measure the diagonals from one set of opposing corners then the other set of opposing corners to make sure it's square.

At this point, toe nail all joists to your skids using 16d common nails. The joists which fall at the 4', 8', and 12' ( joists that are on the 4' increments) lengths along your skids should be measured before nailing to make sure they are nailed exactly on center at those distances. This way, when laying your decking (or flooring) down, your edges will fall right in the middle of your joists for easy nailing. 

5. Whichever method you need to use for anchoring your shed,  it should be done at this step before laying down and nailing your floor sheeting. 

Stagger your floor sheeting when building your shed floor.

Alternate floor sheeting for strength for your shed floor.Stagger Your Floor Sheeting
Shed floor sheeting using treated 3/4" plywood.Shed Floor Sheeting with Treated Plywood

6. Now lay out your floor sheeting starting with one of the front corners first. The reason for this is that you want the front part of your floor looking nice.  It's the first thing visitors will see when stepping into your beautiful new shed. Use 8d galvanized box nails driven every 6" along the edges and every 12" in the field. 

7. It's best to nail the shorter 4' side first.  This way you will be able to pull the longer side over to align up with the outside edge of the floor framing.  This will ensure that your floor sheeting will be squared up properly.  Of course, if your floor framing is not perfectly square then your floor sheeting is not going to line up properly.

Here's an example of laying floor sheeting on an 8x10 shed floor.

8x10 shed floor.Steps For Laying Shed Floor Sheeting

Adding a ramp to your shed floor.

Adding a shed ramp to your shed floorBuilding a ramp to your shed floor

It's easy to add a ramp to your shed floor. Many sheds will serve the purpose of having a place to store riding mowers, 4 wheelers, outdoor equipment, etc.  You'll want to build a ramp to make it easier to move these items in and out of your shed.

How to build a shed ramp.


Do not purchase materials or attempt to build this shed project unless you have studied the information provided thoroughly, and have verified all dimensions and material requirements for yourself. Also verify that the plans conform to local building codes and practices. Although every effort has been made to ensure the accuracy of the information and design, the user is ultimately responsible for the use of this information. All information provided is copyrighted and cannot be duplicated without the permission of Shedking. 

You might like these

Thinking about a concrete shed floor?

More information about how to build a shed.

Do You Have a Question about Building Shed Floors?

Enter your question below

[ ? ]

Upload 1-4 Pictures or Graphics (optional)[ ? ]


Click here to upload more images (optional)

Author Information (optional)

To receive credit as the author, enter your information below.

(first or full name)

(e.g., City, State, Country)

Submit Your Contribution

  •  submission guidelines.

(You can preview and edit on the next page before your submission is sent in. You will also be informed about this site's privacy policies.)

What Other Visitors Have asked...

Click below to see questions about building shed floors from other visitors to this page...

Frame assembly?  
Part 3. "assemble the frame". How to assemble the frame with no flat area (e.g. Outside on the grass etc). Also do you use clamps to hold in place before …

Floor Joist Spacing 
I have 16' x 16' footer in my back yard with 6" block walls on it. The northern wall is 16' outside measure long. The eastern/western walls are only 7' …

Depth of anchors 
Here in Florida freezing is not an issue. How deep should I place 4x4 posts and 12” concrete cylinders to ensure solid foundation and anchorage in our …

Click here to write your own.

Share this page:
Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.
How to build a shed with easy diy shed plans.
Pictures and testimonials from happy shed plan buyers.

Monthly DIY 

Subscribing will get you discounts on shed plans, monthly updates, new shed design ideas, tips, exclusive discounts on shed building resources and tools.  Learn more here.

Recent Articles

  1. Joining the walls of a shed to each other

    Apr 02, 24 09:49 PM

    Hello! My son and I are planning on building an 18'foot x 18'foot lean-to style storage shed. When I was a kid building walls with my own dad (about 60

    Read More

  2. Types of Roofs For Sheds: Designs, Materials, and Styles

    Feb 07, 24 10:23 AM

    Flat style shed roof or lean to shed
    Various types of roofs for sheds including gable, hip, gambrel, saltbox, flat, and more. Gain insights into designs, materials and styles.

    Read More

  3. How to build a shed roof, Shed roof construction, Shed roof design.

    Feb 07, 24 09:17 AM

    how to build a shed roof saltbox style
    Here's a simple how to build a shed roof guide. Your shed roof construction and shed roof design from building simple shed roof trusses right here at shedking.net

    Read More

My You Tube Videos

All my tube videos.