Playground impact-absorbing surfaces: the EN 1177 standard

Most serious injuries on a playground are falls. The impact-absorbing surface is therefore the most important piece of safety equipment, and often the most neglected, because its condition degrades slowly and silently.

What an impact-absorbing surface is for

An impact-absorbing surface serves to soften the shock of a fall and reduce the severity of head injuries. Sand, gravel, wood chips, tiles or poured surface: each material has its properties, but all must offer an absorbing capacity suited to the height of the equipment.

Fall height and landing area

The rule is simple to state: the taller a piece of equipment, the more the surface must absorb. The free fall height of a piece of play determines the type of surface required and the extent of the landing area to protect around it. A surface that is adequate but too small leaves dangerous zones.

Upkeep that is often forgotten

• loose materials compact, shift and lose thickness;
• poured surfaces crack, come loose or harden over time;
• roots, water and vandalism degrade the landing areas;
• insufficient thickness cancels the protection without it being visible.

Checking what cannot be seen

A surface can look intact and no longer absorb. That is why its condition is an integral part of a playground's inspections, with a check of the thickness of loose materials and the integrity of poured surfaces. Documenting this condition over time makes it possible to anticipate renewal.

Choosing the right material

Each impact-absorbing material has its advantages and constraints. Loose materials, such as sand or wood chips, absorb well but shift and require regular topping up. Poured surfaces, more stable and wheelchair-accessible, cost more and age differently. The choice depends on the height of the equipment, the footfall, the accessibility sought and the upkeep budget. No material is maintenance-free: the best surface is the one that is actually checked and renewed.

Accessibility of the surface

The choice of impact-absorbing surface combines safety and accessibility. Loose materials absorb well but are hard to cross in a wheelchair, whereas continuous poured surfaces allow access for children and carers with reduced mobility. Designing a truly inclusive playground means thinking of the surface not only as protection against falls, but also as a path usable by everyone.

Testing the absorption

The look of a surface says nothing about its real absorbing power. For high stakes, tests make it possible to verify that the surface absorbs in line with the fall height of the equipment. Failing that, a regular check of the thickness of loose materials and the condition of poured surfaces remains essential: it is the only way to spot a protection that has become insufficient before an accident reveals it.

Routine upkeep of the surface

An impact-absorbing surface is maintained day to day. For loose materials, this means raking, loosening and topping up regularly to restore thickness, in particular under swings and at the bottom of slides, where the surface hollows out. For poured surfaces, it means cleaning, treating incipient cracks and repairing loose areas before they spread. This routine upkeep, inexpensive, pushes back the full renewal of the surface accordingly.

Tracking your surfaces with KARTES

KARTES links to each playground the condition of its impact-absorbing surface, its checks and its repairs, with photos and deadlines. You spot the areas to redo, you plan the renewal of materials and you keep proof of the follow-up, in the same place as the rest of the playground.

Key points

• The impact-absorbing surface is the key safety equipment against falls.
• The free fall height determines the type of surface and the landing area.
• Surfaces degrade slowly and lose their absorbing power without it being visible.
• Checking the surface condition is part of the playground's inspections.