Patio or decking: which is better?

How long they last

A well-laid patio on a proper base can last for decades with little more than cleaning. Timber decking needs treating every year or two, and boards can rot or split over time, particularly where they stay damp.

Composite decking, made from a mix of wood fibre and plastic, doesn't rot and needs less upkeep than timber, but it costs more than timber decking.

Slippery surfaces in shady gardens

In shady, damp gardens, which are common on the north-facing valley sides, timber decking can get slippery with algae. Grooved boards and regular cleaning help. Paving gets green too, but a textured slab usually keeps better grip.

Sloping gardens

Decking is the obvious answer on a slope, because it can sit level on posts without digging out or building retaining walls. A patio on a slope usually means terracing, which is more groundwork.

Height is the catch. Decking or any raised platform more than 30 centimetres above the ground needs planning permission. That's easy to hit on a steep garden, so check the height before you decide.

Which to choose

For a long-lasting, low-upkeep space on fairly level ground, a patio usually wins. On a steep slope where you only need a small level area, decking can be simpler, as long as it stays under 30 cm high or you get permission.

Some gardens use both: a patio by the house and a small deck further down the slope.

This guide is general information, not legal advice. Rules can change; check with your council before you build. Updated October 2026.