January 5, 2025 Warren Newbery

Can Trampolines Go on Decking?

Yes, trampolines can go on decking, but only if your deck is properly reinforced! Like planning a BBQ in Britain, it needs careful preparation. Whether you've got a standard garden deck or a raised platform, we'll walk you through making it trampoline-ready - from checking load-bearing capacity to ensuring proper safety measures.

Essential Safety Checks

Deck Assessment

Before you even think about unboxing that trampoline, your deck needs a proper health check. Check joists, bearers, and posts for any signs of rot or weakness. A trampoline adds both static weight (around 80-150kg) and dynamic force from jumping, so your deck needs to be as solid as a cricket pitch.

Weight Capacity

Standard decking usually handles about 100kg per square metre. For safe trampolining, you'll need at least double that capacity. Get a qualified builder to assess your deck's strength - it's worth every penny to avoid a wobbly disaster later.

Preparation Steps

Reinforcement Requirements

Most decks will need additional support. Add extra joists between existing ones, install new support posts, and consider cross-bracing beneath the trampoline area. Think of it like adding winter tyres to your car - extra grip when you need it most.

Surface Leveling

Your deck must be perfectly level for safe jumping. Use a spirit level to check, and adjust any uneven boards. Even a slight tilt can send your jumper bouncing in unexpected directions - about as predictable as British weather.

Safety Equipment

Additional Padding

Install rubber matting beneath the trampoline legs to protect your decking and reduce noise. High-density foam mats around the jumping area provide extra protection against falls. Premium safety nets are essential - look for UV-resistant materials with at least a 3-year warranty.

Securing Systems

Traditional ground anchors won't work here. Instead, use deck-specific anchor plates or heavy-duty straps designed for wooden surfaces. Make sure they're properly waterproofed to prevent rust and wood rot.

can you put trampoline on decking with boy waving

Installation Guidelines

Position Planning

Place your trampoline where it won't interfere with deck railings or other garden features. Ensure at least 2 metres of clear space around all sides. Consider the impact on your neighbours' privacy - nobody wants an unexpected audience while practising their backflips.

Weight Distribution

Position the trampoline legs directly over deck joists where possible. If not, use load-spreading plates to distribute weight evenly. This prevents any single part of your deck from bearing too much pressure.

Maintenance Requirements

Regular Inspections

Check both your deck and trampoline weekly for signs of wear. Pay special attention to where the legs meet the decking, looking for any compression or splintering. After heavy rain or winter storms, inspect thoroughly for any water damage or loose fixings.

Seasonal Care

Apply wood preservative to your deck annually, paying extra attention around the trampoline legs. In autumn, clear fallen leaves promptly to prevent them creating slippery patches. During winter months, consider a weather cover to protect both your trampoline and decking from the elements.

trampolines and decking with teen girl enjoying her trampoline

Alternative Options

Custom Platform Solutions

If your existing deck isn't quite up to scratch, consider building a dedicated platform specifically for your trampoline. While it costs more initially (expect to pay £300-500), it's often safer than modifying an existing deck. Use pressure-treated timber and galvanised fixings for longevity.

Ground Level Alternatives

Sometimes the simplest solution is to find a spot on solid ground instead. If your garden allows, creating a level patch with proper drainage might be more straightforward than reinforcing your deck. Consider artificial grass or rubber mulch for a safe, attractive landing zone.

Professional Support

When in doubt, consult a professional. A qualified deck builder or structural engineer can properly assess your setup and recommend specific improvements. They'll ensure your deck meets all safety requirements and can handle the dynamic loads of regular trampolining. The cost of professional advice (typically £100-200) is minimal compared to the peace of mind it provides.