Jumping castle accidents are rare in Australia — but when they happen, they make the news. Most are preventable with the right setup, supervision and common sense. Here’s what to actually watch for as a parent or event organiser.

The four main risks

1. Wind

Inflatables can become unstable in strong winds. At 30 km/h, use must cease, users must evacuate and conditions must be monitored. At 35 km/h, the castle must be deflated and packed down.

This is non-negotiable and it’s not just a recommendation — it’s an Australian Standard requirement under AS 3533.4, which governs amusement rides and devices including inflatable play equipment.

In Brisbane, afternoon thunderstorms between October and March can push winds well past this threshold quickly. Always check the Bureau of Meteorology forecast for the day before and monitor conditions during the event.

What to do: If wind reaches 30 km/h, stop use, get everyone off and monitor conditions. If wind reaches 35 km/h, deflate and pack down the castle.

2. Mixed ages

The most common cause of jumping castle injuries in Australia is not defective equipment — it’s bigger kids accidentally landing on or colliding with smaller kids.

Mixing 2-year-olds and 10-year-olds in the same castle is asking for trouble. The size and weight difference means that when the bigger child lands, the smaller one can be thrown or knocked.

Rule of thumb: Keep under-5s separate from over-5s. Many of our hire options include toddler playpens specifically designed for this — contained, lower walls, soft floor.

3. Unsupervised use

Most serious incidents occur when no adult is actively watching the castle. “Actively” means standing near it, not checking their phone from across the yard.

You don’t need a trained professional for a kids’ birthday party — just an engaged adult whose sole job for that period is watching the castle. Rotate the duty every 15–20 minutes if it’s a long event.

For school events, corporate events and school fetes, we offer an optional trained supervisor. Additional labour is charged at $95/hour Monday to Friday from 9:00 am to 5:00 pm, $125/hour Saturday from 9:00 am to 5:00 pm, $150/hour Sunday from 9:00 am to 5:00 pm, and $195/hour outside 9:00 am to 5:00 pm on any day. This is strongly recommended for any event with over 30 participants cycling through across the day.

4. Hard surfaces and poor setup

Castles set up on concrete, pavers or uneven surfaces are more likely to cause injury when kids fall. The correct setup is:

Flat, grassed area (preferred)
If on hard surfaces, proper anti-fatigue matting must be used under and around the castle
Safety mats at the entrance/exit (included with every Brizzy hire)
1m of clear space on all sides
No overhead branches, power lines or obstacles

Australian Standard AS 3533.4

This standard covers inflatable amusement devices in Australia and sets minimum requirements for:

A 30 km/h cease-use threshold and a 35 km/h deflation and pack-down threshold
Anchoring requirements (stakes on grass, sandbags on hard surfaces)
Inflation monitoring
Participant capacity limits
Age and weight restrictions per unit

All reputable Brisbane jumping castle hire companies operate under this standard. When you’re comparing hire companies, ask whether their equipment is compliant with AS 3533.4 and ask to see their current public liability documentation.

What we do at Brizzy:

Every castle is anchored with stakes (grass) or sandbags (hard surfaces) before handover
Safety pressure is checked before the castle is left with you
Current public liability documentation is available on request. Contact us to confirm the cover details required by your venue.
At 30 km/h, use ceases and users evacuate. At 35 km/h, the equipment is deflated and packed down.

What to check when the hire company arrives

Before the driver leaves, check:

Anchoring — all stakes or sandbags are in place and the castle is not moving when unoccupied
Entrance mat — safety mat is positioned at the castle entrance
Clearance — 1m clear on all sides, no overhead obstacles
Blower — the blower motor is plugged into a secure outlet and running continuously (the castle deflates if power is cut)
Capacity — confirm the maximum number of children allowed at one time (it should be printed on the unit)

If anything looks wrong, ask before the driver leaves.

What you do as the parent or event organiser

Before they jump:

Shoes off, glasses off, no sharp objects in pockets
No food or drink inside the castle
Limit by age — under-5s must be separated from over-5s
Confirm capacity and enforce it — don’t let 15 kids pile in if the limit is 8

While they jump:

Active adult supervision at all times
No somersaults, flips or wrestling
No jumping near the entrance/exit
Stop if rain starts, wind picks up noticeably, or any child is distressed
If a child falls, check before allowing others to keep jumping

Location rules:

1m clear on all sides — enforce this throughout the event
Flat ground — children should not be jumping on a sloped surface
Shade is ideal in Queensland summer — black vinyl absorbs heat and can become very hot in direct sun

Wet weather and wind

Brisbane’s weather, especially in summer, can change quickly. Our wet weather policy is straightforward:

Light drizzle: Castle can usually continue operating. Surfaces become slippery — reduce capacity and slow down activity.
Moderate to heavy rain: Castle must be deflated. Rain significantly increases slip risk on vinyl surfaces.
Wind at 30 km/h: Use must cease, users must evacuate and conditions must be monitored.
Wind at 35 km/h: Castle must be deflated and packed down.
Thunderstorm warning: Deflate immediately and move children indoors.

If you’re worried about the forecast, check our wet weather policy or contact us to discuss the current postponement and cancellation options. The outcome depends on the notice provided and whether equipment has already been delivered.

Hiring in council parks

Most Brisbane City Council and surrounding council parks require:

A hire permit — apply online through the relevant council. Allow 10–14 business days. Typical cost is $50–$100.
The public liability documentation required by the venue — contact us to confirm the cover details and request the current documentation.
Sometimes a risk assessment form — especially for larger events. We can provide a standard risk assessment document.

Some parks also have restrictions on staking (which means we use sandbags), maximum equipment size, or setup times. Let us know which park when you enquire and we’ll flag any known requirements.

Common Brisbane parks where we regularly deliver:

Raby Bay Harbour Park (Redlands)
Frew Park (Milton)
New Farm Park
Victoria Park (Spring Hill)
Murarrie Recreation Reserve

If your park isn’t listed — don’t worry, we’ve probably been there. Just let us know the location.

How to choose a reputable hire company

When comparing jumping castle hire companies in Brisbane, check:

Public liability documentation: Ask for the current Certificate of Currency and confirm the cover details required by your venue.
Equipment condition: Look for recent photos of actual hire units — not stock images. Faded, patchy graphics or visible repairs are signs of old equipment.
Written wet weather policy: If there’s no policy, you have no protection when Brisbane does what Brisbane does.
Proper anchoring: Ask whether they stake on grass and sandbag on hard surfaces. Anyone who says anchoring isn’t necessary is wrong.
Reviews: Google reviews with recent dates and specific mentions of setup quality and professionalism are a good signal.

Frequently asked safety questions

Can I hire a jumping castle for the park without a council permit? You can hire and set up without a permit at some parks, but you’re taking a risk. Most councils have rangers who will ask you to remove the equipment if you don’t have a permit. It’s not worth it — permits are cheap and easy to get with two weeks’ notice.

What’s the maximum wind speed for a jumping castle? At 30 km/h, use must cease, users must evacuate and conditions must be monitored. At 35 km/h, the castle must be deflated and packed down.

Do I need to supervise the castle the whole time? Yes. An adult must be actively watching (not casually nearby) the entire time the castle is in use.

Can kids eat inside the castle? No. Food and drink inside the castle is a choking hazard and a hygiene issue. Keep snacks well away from the entrance.

What if the blower stops working? Call us immediately. The castle will deflate within a few minutes without the blower. Get all children off it before it deflates fully. We carry backup equipment and will respond as fast as possible.

Book with confidence

When you hire with Brizzy, every booking includes:

Current public liability documentation is available on request. Contact us to confirm the cover details required by your venue.
Proper anchoring — stakes on grass, sandbags on hard surfaces
Safety mats at every entrance
Pre-handover safety check
Written wet weather, postponement and cancellation policies

See our safety page for the full breakdown, or get in touch if you have questions before booking.

Ready to book? Browse our themed jumping castles, or for events with under-5s or big crowds, consider supervised hire — a trained operator manages capacity and safety for the whole hire.