EN 14960 Ground Anchoring for Inflatable Hire — What the Standard Actually Requires

BS EN 14960 specifies the safety requirements for inflatable play equipment — bouncy castles, inflatable slides, assault courses, and similar structures used for supervised play. The anchoring requirements are specific and non-negotiable for commercial hire.

The Standard in Plain Terms

• Minimum stake diameter: 16mm
• Minimum stake length: 380mm
• Minimum anchor points: 6 per inflatable
• Minimum holding force: 163 kg per anchor point
• Maximum operating wind speed: 24 mph
• Alternative on hardstanding: ballast of not less than 163 kg per anchor point

These are minimums, not ideals. PIPA inspectors test anchor points to 165 kg of pulling force. An anchor point that holds 164 kg passes. One that holds 162 kg fails.

The PIPA Inspection and What It Tests

PIPA runs the UK's principal safety scheme for inflatable play equipment, aligned to BS EN 14960. During a PIPA inspection, anchor points are tested to 165 kg of pulling force. If your stakes are undersized, bent, or not reaching full depth, you may be presenting a non-compliant installation regardless of what it looked like in your own assessment.

How to Conduct a Pre-Event Ground Pull Test

Operators should conduct their own ground pull test at each site before the inflatable opens to the public. Drive a representative stake, attach a calibrated load cell, and apply force gradually up to 163 kg. If the stake moves before reaching 163 kg, the ground is not capable of meeting the EN 14960 requirement at that position and the installation should move to ballast.

Repeat at multiple positions per inflatable footprint and record the result.

The Problem with Mild Steel Stakes Over Time

Standard mild steel re-bar stakes — the most commonly used staking solution across the inflatable hire industry — meet the dimensional requirement when new, assuming they are the correct size. The issue is what happens over a season of regular use.

Mild steel bends at the tip when driven into hard ground: compacted clay, chalk, dry summer soil. Once the tip has bent — even slightly — the stake no longer drives true. It steers off line, seats at a shallower effective depth than the length would suggest, and the head no longer sits at the correct angle for the guy rope attachment. Each of these reduces the effective holding force. A stake that tested fine when new may no longer achieve 163kg after a summer of regular use.

The stakes your inspector sees are not the stakes you bought. They are the stakes after several months in the field.

High alloy steel stakes are significantly harder and more resistant to tip deformation. They drive more cleanly in difficult ground, stay straight across repeated use, and are more likely to retain their effective dimensions and holding geometry through a full season. That matters when a PIPA inspector is looking at your gear in September.

Hard Standing — When Stakes Are Not the Answer

EN14960 IS04 deals specifically with securing inflatables on hard standing: concrete, tarmac, paving. On hard standing, ground stakes are not an appropriate solution, and attempting to use them on a hard surface does not constitute compliance.

For hard standing setups, the standard requires anchor points that achieve the same 163kg holding force by other means:

• Sealed water-filled containers of a minimum 163kg, with appropriate fixing points, either individually or properly secured together if made up of separate sections
• Concrete bolts, SDS-drilled and load-tested to the required rating
• Ballast systems that allow the correct tether angle (30–45 degrees from the ground) to be maintained

For hire companies operating on mixed ground — grass at some venues, hard standing at others — this means carrying the right equipment for each setup. Stakes and sandbags or water weights are not interchangeable, and each setup type needs to be assessed and resourced on its own terms. If you are regularly working on hard standing and your current approach to anchoring is not specifically engineered to achieve 163kg per point, it is worth reviewing before your next inspection.

The Honest Picture: When Is This a Real Risk for Your Operation?

EN14960 applies to all commercial inflatable hire. The standard does not make allowances for the size of the operation, the frequency of hire, or the nature of the events.

That said, the practical risk profile is not the same for every hire company.

The compliance risk is highest when:

• You are operating at high volume, across a full season, with stakes that are showing signs of deformation or wear
• You work across varied ground conditions — from compacted summer parkland to wet autumn fields
• You have not replaced your staking stock in two or more seasons
• Your stakes are visibly undersized or were not purchased to a specified standard

The risk is more manageable when:

• You are working at lower volume, primarily on uniform, well-draining ground
• Your stakes are recently purchased, correctly dimensioned, and in good condition
• You have a pre-use inspection routine that covers stake condition before each job

In either case, the legal liability is yours as the operator. An inspector who sees deformed, undersized, or incorrectly installed stakes at an annual inspection does not have discretion to overlook them on the basis that your operation is small or that you are generally careful. The standard is the standard.

What to Check Before Your Next Inspection

If you are not certain your current stakes meet the EN14960 dimensional requirement, the check is straightforward:

1. Diameter: measure across the shaft of the stake. It should be 16mm or greater.
2. Length: measure the full length of the stake, including the head. It should be 380mm or greater.
3. Condition: look at the tip. Is it straight? A bent or deformed tip indicates that the stake is no longer driving correctly and is likely achieving less holding force than when new.
4. Head return: the head of the stake must be intact and structurally sound — it is what your guy rope attaches to and what transmits the holding force to the ground.

If any of your stakes fail these checks, they should be replaced before your next job — not before your next inspection.

Tiger Stakes and EN14960 Compliance

Tiger Stakes are manufactured from high alloy steel with a patented heat drawn point. They are available in lengths up to 60” — well beyond the 380mm minimum — and in diameters from 26mm upward. The alloy construction means they drive more cleanly in harder ground and are significantly more resistant to the tip deformation that reduces holding force in mild steel stakes over time.

They are not sold as a compliance guarantee — compliance depends on ground conditions, installation technique, and the specific setup, and no stake can guarantee 163kg in all conditions. But if you are replacing undersized or worn stakes ahead of an inspection, or reviewing your staking inventory for the season, they are worth a look.

If you want to talk through what you are currently using and whether it meets the dimensional requirements, get in touch. A straight conversation is more useful than a brochure.

Get in Touch

Email: hoganuk [at] hoganstakes.co.uk
Contact form: hoganstakes.co.uk/contact
Product range: hoganstakes.co.uk/products

Hogan Stakes UK is the sole authorised UK distributor of stakes manufactured by Hogan Manufacturing Inc., producers of premium tent and marquee stakes in the USA since 1948.

This guide is intended for professional reference. EN14960 requirements are subject to revision. Operators should verify current requirements with their PIPA inspector or refer directly to the published standard. For hard standing anchor installations, consult a qualified structural engineer.