When we look at a playground, seeing rubber flooring under the swings, slides and climbing frames reassures most of us.
But is a rubber floor really enough?
No. Not every rubber floor provides the same protection.
What matters in children’s play areas is not simply using a rubber surface, but using the right flooring system: one that suits the height of the play equipment, provides the required impact attenuation and has had that performance verified by testing.
What Is Critical Fall Height?
Critical Fall Height (CFH) is one of the key criteria for assessing the performance of impact-absorbing surfaces in children’s play areas.
In tests carried out under EN 1177, the impact attenuation performance of the surface is measured at different fall heights.
This assessment takes into account HIC (Head Injury Criterion) and gmax (maximum acceleration) values.
The aim is simply this:
The height from which a child could fall and the level of protection the surface can provide must match.
Can Any Rubber Floor Be Laid Under 2-Metre Play Equipment?
No. The risk of a fall from 60 cm in a playground is not the same as the risk of a fall from, say, 2 metres. That is why the free height of fall of the equipment must be considered first when choosing a playground surface. Then a flooring system with impact attenuation performance appropriate to that height must be selected.
In other words, the right order is:
Free height of fall of the play equipment → Required surface performance → A suitable, tested flooring system.
Saying “The Rubber Is 4 cm Thick, So It Is Safe” Is Not Enough
The thickness of a rubber floor certainly matters. However, it is not right to judge safety by centimetres alone.
Two rubber products of the same thickness may not have the same impact attenuation performance. The product’s structure, density, raw materials, underside geometry, manufacturing method, installation and the layers beneath the surface can all affect the result.
That is why, alongside “How many centimetres?”, you also need to ask “For which critical fall height has it been tested?”
How Is the HIC Test Carried Out?
In tests carried out under EN 1177, a special test headform fitted with sensors is dropped onto the surface from set heights. The data generated on impact is measured and used to calculate HIC and maximum acceleration values. These measurements determine the surface’s impact attenuation performance and critical fall height.
In other words, the safety of a surface is not judged by eye or by feeling how soft the product is; it is tested against measurable performance criteria.
Laboratory Testing Matters, But What About After Installation?
Choosing a quality, tested product is the first step. However, the final performance in a play area can also be affected by how the product is installed on site.
That is why, in addition to determining critical fall height in the laboratory, EN 1177 also includes a test method for verifying on site the impact attenuation performance of the surface in a specific play area after installation.
In on-site assessments, different surface structures and thicknesses can be considered separately, and potentially more critical zones such as equipment entry and exit points can also be included among the test points.
This shows us something important:
Safety is not just about buying the right product; it is about installing the right product correctly and, where necessary, verifying its performance after installation.
What If the Surface Does Not Deliver the Required Performance?
Having rubber in a play area does not make an unsuitable surface safe. If inspections show that the surface does not provide the impact attenuation required by the play equipment above it, the area must be assessed and the necessary corrections made.
If necessary, the flooring system should be replaced. Because what is at stake is not just the technical specification of a floor covering, but the safety of children.
What Should Municipalities, Schools, Residential Complexes and Park Operators Look Out For?
In playground projects, the choice should not be based solely on colour, appearance, price or rubber thickness. Municipalities, schools, nurseries, residential complexes, landscaping companies and play area operators should ask this fundamental question when choosing a product:
“Does this surface provide the impact attenuation required for the free height of fall of the play equipment we will be using?”
Having the relevant test reports for the product, choosing the right thickness and system, installing it in line with the manufacturer’s instructions and verifying on-site performance where necessary are all important parts of creating safer play areas.
Safety in Playgrounds Starts from the Ground Up
Children will run, climb, jump and, from time to time, fall. The purpose of a well-designed play area is not to restrict children’s movement, but to reduce the risks they may face while playing as far as possible.
That is why rubber flooring is not just a colourful park surface. It is part of the play area’s safety system. The right product, the right thickness, the right installation and verified impact attenuation performance must be considered together.
Because what matters is not that the floor is rubber, but that it can provide the protection needed when a fall happens.
