Cookies on this website

Placing small data files (cookies) on your device is standard practice, and is essential for a high quality experience, and we'll collect some information about browsing behaviour. For more information read our Cookie Policy. By using this website, you consent to cookies being used in accordance with our policy, alternatively please disable cookies in your browser or refrain from using the site.


Customer Login

Forgotten your password?

QuickJACK-HS Adjustable Shed Base (for hard surfaces)

QuickJACK-HS (Hard Surface) Garden Shed Base Foundation

Click on photo above for full size image

QuickJACK-HS (Hard Surface) Garden Shed Base Foundation QuickJACK-HS (Hard Surface) Garden Shed Base Foundation QuickJACK-HS (Hard Surface) Garden Shed Base Foundation QuickJACK-HS (Hard Surface) Garden Shed Base Foundation

Product Code [QJHS21+]

Our Price: £19.75 RRP: £24.99

Courier (if out)
Total Quantity
How many of each style do you require?

5 Stars Read all customer reviews


QuickJACK-HS (Hard Surfaces) Adjustable Shed Base - UK ONLY

QuickJACK-HS Shed Base (Hard Surfaces) is an easy-to-fit adjustable base foundation for all garden buildings and decking. This high quality UK manufactured base system allows even the most basic novice to achieve a professional, precisely level base on any hard surface such as concrete, paving slabs, monoblocks and tarmac in minutes. Important: If you have soft ground such as soil, clay or grass, please go to QuickJACK-PRO (Soft Surface) instead.

Each QuickJACK-HS (Hard Surfaces) bracket consists of three parts: 1) heavy-duty threaded stem c/w 100mm pre-drilled base plate, 2) an adjustable bracket, 3) 35mm locking nut. Each ultra-strong adjustable bracket is massively over-engineered in 6mm steel and is guaranteed for 25-years. The whole system is simple to use, and extremely fast... allowing you to create a solid level base for your shed or summerhouse, or create a level deck, in minutes... with no ground levelling or preparation required.

Apart from being quick and easy to install, the QuickJACK-HS (Hard Surfaces) base system allows for precise levelling, and it also keeps timbers off the ground ensuring your shed stays dry and well ventilated, and it anchors your building to the ground. QuickJACK-HS (Hard Surfaces) is made from heavy-duty zinc-coated components which are designed to last, and it is completely reusable, allowing for simple re-positioning of your garden building if needed. Even after assembling your building, it is easy to adjust the levels using a 35mm spanner (not included).

NOTE: As well as the QuickJACK system, you will need to make a simple framework to support the floor of your garden building. We recommend using 4"x2" (approx. 100x50mm) pressure-treated battens which are very cost effective, however you can use any size of timber battens.


  • FREE U.K. NEXT WORKING DAY DELIVERY (Not available overseas)
  • 25-year manufacturers warranty
  • 100mm adjustment for uneven sites
  • Keeps timbers dry and ventilated
  • Zinc-plated for anti-corrosion
  • Quick and easy to install
  • Precise adjustment for easy levelling
  • Simple to re-adjust if required
  • Perfect for any size of shed, garden building, or decked area

QuickJACK HS for Hard Surfaces

QuickJACK-HS (Hard Surfaces) Video

The QuickJACK-HS (Hard Surfaces) is very easy to install. We're currently working on a video, however please feel free to download the installation guide in the meantime:

Quality Construction

Each QuickJACK-HS (HardSurfaces) component is machined right here in the UK using top-quality, heavy-duty, zinc-coated steel. They are VERY, VERY STRONG and each part is much stronger than the garden building that will be sitting on it (even when fully laden), so you don't need to worry about strength. Brackets are manufactured from massively over-engineered 6mm thick steel, which will last a lifetime, and is guaranteed for 25-years


Why Choose QuickJACK-HS (Hard Surfaces)?

Basically it is fast and easy to use with no ground preparation required. If you already have an uneven hard surface in place such as concrete or paving slabs or a patio, then usually you would have to lift and relay the area, however the QuickJACK-HS Base Solution allows you to fit your building straight down onto your existing ground. You can purchase as many brackets as you like (though we generally recommend positioning them approx. 1.5m apart), allowing you to create almost any base size, but to keep things simple we've created some example kits (see below) which cover some of the most popular sizes:
NOTE: The standard bracket in this system is the 90° Corner Bracket which suits the vast majority of applications (i.e. internal & external corners, as well as cross joints), however there is also a 180° In-line Bracket which can be used on straight timbers (see Example Kit-6 above). Please advise us at the time of order if you'd like any of them instead. There is no extra charge for choosing 180° In-line Brackets.

No Maintenance

The QuickJACK-HS (Hard Surfaces) system is zinc-plated for long-lasting use. It requires NO MAINTENANCE or treatment after installation, and is designed to easily outlast the lifespan of your shed or garden building.

Straightforward Installation

The QuickJACK-HS (Hard Surfaces) base system has been designed to allow the novice to create a high quality, strong, long-lasting shed base without the need for a expensive professional service. Installation is simple...
  1. Make your timber frame to the size required.
  2. Fix the brackets to your upside-down frame.
  3. Attach the adjustors.
  4. Flip the frame the right way up.
  5. Adjust the nut to level.
  6. Tighten the upper locking nut, and fasten to ground if required, then you are done!

Prices above are based upon quantity rates as follows:

  • 2-5 Units: £19.95 each (+ £9.99 delivery)
  • 6-12 Units: £19.95 each (FREE delivery)
  • 13+ Units: £19.75 each (FREE delivery)

Information shown above has been supplied by the manufacturer, and is as accurate as possible (errors and omissions excepted), however they are intended only as a guide. *The free delivery service is available on all QuickJACK orders over £100 (otherwise a £9.99 delivery charge is applicable). Delivery is available to most of England, Wales and Southern Scotland (mainland only) and is not available overseas at present. Orders received before 11am will be processed for delivery on an overnight courier service, however this cannot be guaranteed especially during peak season. Times shown are typical for most areas, although this is approximate and cannot be guaranteed. Outlying areas may be subject to additional charges, please check before ordering. Delivery lead time shown is typical for most areas, however this is approximate and cannot be guaranteed, so please check before ordering if delivery time is critical.

Related Products

Customer Reviews
Write an online review and share your thoughts with other shoppers!

Reviewer: Graham from Birmingham   5 Stars
A great concept! This thing saved me a load of time and effort, and I'm impressed at how quick it is to install.

Reviewer: Jim Booth from Worcester   5 Stars
Having used some of these products before, I needed a solution for an old concrete slab I had. This was perfect. Great product and delivered quick too.

If you prefer, you can order any of our garden buildings in person from our Scottish display centre near Edinburgh. You can also visit our sister website Simply Summerhouses for more information, however this may not necessarily up to date.