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Hiring guide

Indoor bouncy castle hire: halls, ceiling heights and venue rules

Taking the party indoors avoids the weather but brings its own questions. This guide covers what to check with the venue and the hirer before you book a castle for a hall.

Why move the castle inside

An indoor booking means no wind readings, no wet bouncing surface and no watching the forecast all week. It is a popular choice for winter birthdays and for families without a garden. The trade-off is that two sets of rules apply: the hirer's and the venue's.

Start with the venue, not the castle

Village halls, community centres, church halls and sports clubs often have written policies on inflatables. Read them before you book anything else, because they can rule some units out.

As an example, Charvil Parish Council's policy limits inflatables inside its building to 14 feet in height, asks for the hire company's public liability cover to be at least £5 million and asks for a copy of a current PIPA certificate or ADIPS report. Sutton Parish Council in Cambridgeshire sets a similar insurance level and expects the person hiring the hall to carry out a risk assessment. Other venues will have their own figures, so ask for the policy in writing.

  • Are bouncy castles or soft play allowed?
  • Is there a maximum height for inflatables?
  • What insurance and inspection paperwork does the venue need, and by when?
  • Do you need to complete a risk assessment?
  • Are there rules on floor coverings, weights or tape?
  • Can you have access early enough for set-up, and late enough for take-down?

Ceiling height: measure, then ask

Do not guess the ceiling height from memory. Measure from the floor to the lowest point above where the castle will go. In many halls that is not the ceiling but a beam, a light fitting, a heater, a basketball hoop, a projector or a smoke detector.

Then ask the hirer for the inflated height of the unit and how much headroom they want above it. They will know the real figure for their castle, and many hirers stock low-height or toddler units for exactly this situation. If your hall is tight, send them your measurement and a photo and let them suggest a unit.

Anchoring without stakes

Stakes are obviously not an option on a hall floor. HSE says that for indoor use the operator's manual sets out the anchorage needed to keep the castle in shape and stop it tipping over. Merthyr Tydfil Council's guidance makes the same point: an indoor castle must still be secured to prevent movement and overturning.

In practice this usually means weights or sandbags tied to the anchor points. Ask the hirer what they use, and check the venue is happy with heavy weights on its floor.

Protecting people and the floor

Merthyr's guidance says extra safety mats are needed where an inflatable is indoors or on a hard surface, and HSE says impact-absorbing material should be used where a fall onto the ground could cause injury. Rother District Council adds that a ground sheet should be used if the floor is abrasive, oily or dirty.

Sprung wooden floors and sports surfaces can be easily marked. Tell the hirer what kind of floor it is, and ask whether they bring a ground sheet.

Power and the blower

The blower runs throughout the hire, so you need a socket close by. Ask the venue where the sockets are, and keep cables along walls or covered so nobody trips on them. Both parish council policies above say petrol generators must not be used indoors or in enclosed spaces. Keep the blower's air intake clear of coats, bags and balloons.

Getting the castle through the door

A packed castle is a bulky, heavy roll. Check the width of the doors, whether there are steps, ramps or a lift, and how close the van can park to the entrance. Pass all of this to the hirer.

Also ask how long set-up and take-down take, and book the hall for that time as well as the party. Running over a hall booking can mean extra charges.

The same safety rules still apply

Being indoors removes the wind, not the other risks. Keep to the user and height limits, put similar sizes on together, ban shoes, food and drink on the castle, and have an adult watching at all times. Keep tables, chairs and the buffet a good distance from the entrance and sides so nobody bounces off onto furniture.

Questions

Can any bouncy castle go indoors?

No. It depends on the inflated height, the floor area, the anchoring method and the venue's rules. Give the hirer your ceiling height and floor measurements and let them recommend a unit.

Do I need to check the wind for an indoor castle?

HSE's anemometer advice is for outdoor use. Indoors, the castle still needs to be anchored as its manual describes.

Who provides the insurance for a hall booking?

Venues usually ask for the hire company's public liability certificate and may set a minimum level. Some also ask the person booking the hall to complete a risk assessment, so check the venue's policy.

Suppliers you might look at

Sources and further reading

This guide is general information for people hiring inflatables in the UK, not legal or safety advice. Your hirer is responsible for safe set-up, so always follow their instructions. Last reviewed November 2026.