So, you have got a shed, the next step is to make a base for it. You can make one either out of timber, or concrete. We have a detailed floor plan for all the shed models we supply, this article will give you some tips on how to make a concrete one. 

Step1: Tools needed

Shavel, measuring tape, timber for the frame, pegs, hammer, level. 

 

Step 2: Prepare the ground

Mark out the area on the ground, we'd generally recommend building a concrete pad with a thickness of 200mm. Dig out the area and remove any roots and rocks. 

 

Step 3: Create a framework and set rebate

We recommend making the base to the exact external dimension of the shed, so the internal dimension of the frame will equal the external base dimension of the shed. Measure the diagonal distance between the frame, and make sure they are equal so you know the frame is perfectly square.

Our sheds' base frame width is 25mm, it is recommended to put down a 30mm wide 25mm thick strip of timber to the inside of the frame from the top. This will create a rebate around the edge of the base. Once the pad is finished, the shed will sit on top of the rebate, and when it rains, the water won't come in from the bottom because of the step. However, with a rebate on the pad. The anchor kits that come with the sheds cannot be used. They are designed for a flush base. A set of recessed floor clamp is needed.  

 

Step 4: Pour concrete

Work out the amount of concrete needed by multiplying the width, length and thickness. Usually, a 10% extra is needed to accommodate errors and mishaps. Fill the frame and pay attention to the corners. Level and smooth the top with a trowel

 

Step 5: Wait for curing

It is good to cover the finished surface with a sheet of plastic when the concrete is set but not dried. The plastic sheet will hold the moisture and allows it to cure slowly. Wait for 3 days before removing the frames. If the weather is hot, spray water onto the surface to slow down the curing process. 


For more information about building rebates of the base, please read this blog.