Oz Trampolines

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Installing an inground trampoline is easier than you think

Installation & safety instructions

Our high quality trampolines are designed to give you peace of mind and provide you & your childrenwith many years of fun. 


Capital Inground Trampoline Kits conform to the relevant parts of the new EN71-14 ‘Trampolines for Domestic Use’ safety standard. 

If you are planning to install this trampoline in a non-domestic environment, we highly recommend you contact Oz Trampolines to discuss one of our Commercially certified trampolines. 


Innovative design saves you time, excavation and $$.  Retaining wall included.

Double strength frame with 10 years warranty


Improved safety and blends into the surroundings.

Half and full enclosures available

Heavy duty bounce mat with 5 year warranty

If you don’t know what’s lurking beneath the soil in your backyard, we recommend making a quick call to your local city planning office (they can tell you if you’re likely to strike any major pipes or power lines!). Or go to BYDA.COM.AU for free services plans.

Step 1. Dig the hole

Mark out a hole that is a few inches wider in diameter than your trampoline. This is to give you a little extra room when you place the trampoline in the hole.    

Dig out 25cm of soil evenly across the entire hole. Then dig an inner hole in the middle that is 2ft or 60cm less in diameter than the trampoline size in a bowl shape to a depth of 90cm (about 3ft) for 12ft and 14ft trampolines and 75cm (about 2ft 6 inches) for 8ft and 10ft trampolines. This will leave a ledge onto which the trampoline frame will sit.

Step 2. Assemble the frame

Assemble the top and bottom sections of the trampoline frame, attach mat and springs and fix the retaining wall to the outside of the frame.

Attach springs at 12 o’clock position, then 6 o’clock followed by 3 o’clock and 9 o’clock first – this will give even tension and make it easier to fit the rest.  For rectangular trampolines start with the corners first.

Step 3. Site Trampoline into the hole

Lift the trampoline into the hole and place on the ledge ensuring the frame is at the correct height. Then back-fill in the gap on the outside of the frame, compact the soil and re-turf.

Step 4. Attach the safety pads

Use a long screwdriver to help push the elasticated toggles down between the trampoline frame and the retaining wall in order to secure the pads to the trampoline.

Attach the vented pads to the frame & you’re ready to enjoy your InGround Trampoline!


Frequently asked questions

Will my trampoline need drainage?

Some customers are concerned that water might sit in the bottom of the hole for their inground trampoline. The simple truth is that 99% of our customers have no problem with water – though water may sit in the bottom of any hole after heavy rain, it will soon drain away. The only exception to this is customers who have non` porous soil such as clay, as the water will drain much more slowly.

Building a soakaway

A soakaway is a ‘pit’ filled with a combination of stone, rocks or broken brick and helps any rainwater drain away. At the bottom of the hole that you dig for the trampoline, dig a small pit approximately 600 x 600 x 600 and fill the bottom of it with bigger bits of brick or stone, and the top with smaller rocks.

Wait and see..

The other option is to wait and see if you actually have a problem. It’s easy to access the hole after you’ve installed the trampoline, just remove the surround pads & jump mat. All of the options described below can be done retrospectively, so it’s often best to ‘wait and see’.

How long will it take to install?

Our trampolines have been designed to install yourself, how long it takes depends on the size of trampoline you choose and whether you dig by hand or hire an excavator. Digging by hand we’d say allow a weekend to complete the job, if you hire an excavator you’ll easily do it in a day.

Do I need to build a retaining wall?

No! Our inground trampoline kit has a retaining wall built in, making it even easier to install at home. The retaining wall easily screws onto the frame into pre-drilled holes.

Do I need to hire an excavator?

This depends on the size of trampoline you choose and how energetic you’re feeling! We’d recommend digging the 8ft and 10ft sizes by hand as it’s actually easier to get the bowl shape you need with a spade than an excavator. But for the largest sizes hiring an excavator will definitely make less work for you.

How much soil do I need to excavate and how do I dispose of it?

The amount of soil you need to excavate will vary depending on which size trampoline you are installing. For the smaller & medium size trampolines you will fill a regular sized trailer.  For the larger trampolines you may need to do two trailer loads to collect the soil. If you are able to use the soil in your garden for raised beds or levelling ground etc. then you will save the cost of a trailer.

Will I need to add drainage beneath the trampoline?

In most cases, a simple soak away as described in the instructions should be sufficient to ensure your trampoline pit drains well. For some gardens that have a high density of clay you may need to consider alternative drainage options such as the ones outlined in our blog.

How much room should I leave around my trampoline?

If you do not have a net on your trampoline then you should leave at least 1.5m around the perimeter of the trampoline to avoid the user bouncing off the trampoline into a potential hazard such as a tree or fence. You should also make sure that there are no hard surfaces within this area such as a stone pathway.

How do I look after my Inground Trampoline?

Fortunately, the Capital Inground Trampolines are relatively maintenance free! It always helps to prolong the life of your trampoline pads and jump mat if you purchase a cover. Likewise keeping your trampoline clean of general garden debris such as fallen leaves, twigs and mud will help maintain all elements of the trampoline. We recommend that you check all parts regularly and replace any worn out parts as soon as you notice them.

Check out our article Best-selling Oz Trampolines

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