Earlybird delivery discount: Check out reductions available on this page. Take advantage now.
Now is the time to pick up an ex-display building during our annual sale. See remaining models here At LEAST 30% Off

Earlybird delivery discount: Check out reductions available on this page. Take advantage now.
Now is the time to pick up an ex-display building during our annual sale. See remaining models here At LEAST 30% Off

Earlybird delivery discount: Check out reductions available on this page. Take advantage now.
Now is the time to pick up an ex-display building during our annual sale. See remaining models here At LEAST 30% Off

How to Plan and Prepare for Building a Concrete Base for Your Garden Building

Without that, even the most expensive garden shed will struggle and you will have problems over the years. This is the most important part in the purchase of a garden building or summerhouse and you will find those decent shed companies such as 1st Choice Leisure Buildings will talk through the options and the merits of each type of base.

Building a base is a relatively easy task for an average DIY’er, the most important thing is to plan what type of base you are going to put down and to allow sufficient time to do this before your new pride and joy is delivered.

There are several options for a base for a garden shed and this ranges from a concrete base, a paving slab base, ProBases, timber bearers or a timber subframe base. Each has their own merits but the end result needs to be a level and well-supported base for your new garden shed, maybe from 1st Choice.

If you choose concrete then this can be hard work, however, provided you do the job properly will have a long lasting base for your new shed. You initially need to clear the area of any vegetation and grass where the shed is to go. You will need some shuttering, essentially some timber planks about 6″ x 1″ in size. You then need to fix these into place around the perimeter of the shed by digging into the ground slightly and anchoring the boards into place with timber wedges.

How Large To Make Concrete Base

You will need to know the size of your new garden building or maybe your log cabin and this is important. Many people (so-called experts) will tell you to make the base 6 inches larger than your proposed shed. This is bad advice as this will allow rain to fall onto the concrete and possibly run under the shed making the floor joists wet. By making the concrete base the same size as the shed this will stop this from happening. Also, the top of the concrete should be 1-2″ above the surrounding ground level and this will also help to keep the floor dry, even if you get standing water in your garden.

With the shuttering in place (always ask the size of the garden shed or workshop from your supplier as an 8×6 shed might not be 8ft x 6ft but 7ft 10in x 6ft 1in) and with the top of the shuttering about 1-2 inches above ground level you will be able to pour concrete into the enclosed area. A concrete base works best when you are able to lay a compacted hardcore base of around 3 inches and then another 3 inches of concrete above that, keeping the surface as perfectly level as possible.

DIY vs. Hiring a Professional: Choosing the Right Approach for Building Your Shed’s Concrete Base

If it is a small garden shed you could hire a concrete mixer and mix the concrete by hand, or you can have the concrete delivered by companies such as Mix-A-Mate who will mix the exact amount of concrete on site so you have no waste to worry about

Building the right base for your garden shed or summerhouse is a task that the average DIY person will be able to complete alone, but for safety and speed, two people will complete the task much quicker.

Whichever shed base you finally decide upon, it must be level so that your new structure will sit properly without placing excess stress on any parts of that structure. This will also help rainfall off your shed properly and not build up in an area which will cause long-term damage to your timber shed.

Other Base Options

If you would like to build a paving slab base or to put timber bearers you could call 1st Choice for free advice. Another option is to have a timber subframe base. This would consist of fully pressure treated timber made into a frame the size of the shed. Cross supports would be inserted between this outer frame. The construction would then be placed into position and levelling posts inserted into place. This provides a solid base for your new shed and also allows plenty of air to get underneath the shed keeping it nice and dry.

Author is Robin Antill - expert in garden buildings Written By Robin - Expert in Garden Buildings For 44 Years.
Hi, I'm Robin Antill, founder of 1st Choice Leisure Buildings, and I use my expertise gained over 44 years in the garden buildings industry to understand that each customer is different. With my manufacturing, retailing and customer service experience my articles help people choose their ideal shed, garden workshop, summerhouse, log cabin or garden office needs to suit their requirement and that is key to satisfaction. And what do I do when I'm not writing? You may find me following Grimsby Town Football Club or riding roller coasters - so plenty of 'ups and downs' in my life.

About Author:

Robin Antill is an established authority in the field of quality garden building manufacturing, boasting over four decades of experience. Having founded Titan Garden Buildings in 1979, he demonstrated a commitment to excellence from the outset by moving away from subpar materials and embarking on crafting buildings of superior quality.

His lineage of craftsmanship, traced back to his father and grandfather's business in Cleethorpes, underscores his dedication to quality and customer satisfaction. Robin's son, Craig, who joined the business in 1990, brings additional expertise, having honed his skills at Guildford College in joinery.

Together, they elevated Titan Garden Buildings, which eventually evolved into 1st Choice Leisure Buildings. Their enduring focus on premium materials, top-notch manufacturing, and unparalleled customer service, along with Craig's digital acumen in creating the company's online presence, showcase their expertise and reliability in the industry.

Robin’s expertise was featured in Realtor.com, Homes&Gardens, The London Economic, and dozens other publications.

Woking Show Site
1st Choice Leisure Buildings
Woking Garden Buildings Show Site
Sutton Green Garden Centre,
Whitmoor Ln, Sutton Green,
Phone 01483 237550