Choosing the Right Stone for a Patio

Why the surface underfoot deserves real thought

A patio is one of the few parts of a garden you'll touch every single day. You'll walk on it in bare feet in July, scrape a chair across it in November, and watch it turn dark with rain for weeks at a time. So the stone you choose isn't just a colour decision — it's a decision about how the space will feel, age and behave for the next twenty years.

In Britain, that means thinking hard about frost, algae, wet leaves and the fact that a north-facing patio can stay damp from October to March. Sandstone, limestone and granite will all do the job, but they behave very differently. Here's how they compare.

Sandstone: the dependable all-rounder

Sandstone is the workhorse of British patios, and for good reason. It's affordable, widely available and comes in a genuinely useful range of colours — soft buffs and creams, cool greys, muted greens, and the darker blues and browns that hide dirt well.

Most of what you'll see is riven sandstone, with a naturally cleft, slightly uneven surface. That texture is a real asset: it grips well underfoot when wet and disguises the small marks that come with everyday use. Sawn sandstone gives you a flatter, more contemporary look, but it can become slick in damp, shaded spots until it weathers.

Sandstone is porous, so it benefits from sealing every few years, and lower-grade slabs can flake if water sits in the surface during repeated freezes. Buy from a reputable supplier and you'll get a stone that shrugs off British weather comfortably. Expect to pay roughly £25–£50 per square metre, with British Yorkstone considerably more.

Limestone: pale, smooth and cool underfoot

Limestone has a tighter, more uniform appearance than sandstone, usually in pale greys, creams and soft buffs. It's the stone that gives a garden that calm, elegant, slightly Mediterranean feel — and it takes a crisp sawn edge beautifully, which suits large-format contemporary paving.

Finishes range from honed and smooth to sandblasted or tumbled. It is a dense, fine-grained stone that feels cool and smooth underfoot, and it develops a gentle patina rather than wearing out. The trade-off is slip resistance: honed limestone can be genuinely slippery when wet, particularly in shade where algae takes hold.

If your patio sits in a sunny, open spot, a smooth finish is usually fine. If it's shaded, near a pond, or under trees, choose a textured or sandblasted finish instead. Limestone generally sits between sandstone and granite on price — think £35–£70 per square metre.

Granite: built for the long haul

Granite is the hardest of the three and the closest thing to a permanent surface. It's dense and near non-porous, so it resists frost, staining and heavy foot traffic with almost no fuss. Colours run from silver-grey to deep charcoal, often with a fine speckled grain.

For grip, choose a flamed or bush-hammered finish, which gives an excellent textured surface even in the wet. A polished or sawn finish looks striking but should be kept away from steps, slopes and shaded corners.

• Best for: busy family gardens, steps, driveways and areas that get constant use.
• Watch out for: weight and cost. Granite is heavy, so it needs a robust sub-base and may need two people or a mechanical lifter for larger slabs.
• Maintenance: rarely needs sealing, though dark colours show water marks and dust, and oils or barbecue fat can stain if left.

It's the most expensive option, but it's also the one most likely to outlast the house.

Getting to grips with slip resistance

Slip resistance is where most patio regrets begin, and it's about finish as much as stone type. Look for paving tested to a wet pendulum value of 36 or above, which indicates a low slip potential.

• Textured beats smooth: riven sandstone and flamed granite are the safest bets.
• Plan the falls: a minimum gradient of about 1 in 80 away from the house keeps water moving and reduces algal growth.
• Joints matter: 10–15mm joints with a permeable or resin-based pointing let water drain rather than pool.
• Keep it clean: a stiff brush and occasional wash removes the film of algae that makes any stone treacherous.
• Skip the gloss: shiny sealers on smooth stone are a recipe for a slippery surface.

Matching the stone to your garden

Think about orientation first. A north-facing patio stays damp, so favour textured surfaces and lighter colours that lift a gloomy corner. A south-facing one dries quickly and can get uncomfortably hot underfoot in summer — pale limestone stays cooler than dark granite.

Then consider the building. A period cottage usually suits riven sandstone or reclaimed Yorkstone; a modern extension looks sharper with sawn limestone or large-format granite. Small gardens benefit from paler stones that bounce light around, while larger plots can carry darker tones without feeling closed in.

Finally, budget for about 10% more stone than your measured area to allow for cuts and breakages, and always order from a single batch so the colour is consistent. Ask to see samples wet as well as dry — most stone looks dramatically different in the rain. Lay slabs at least 22mm thick on a properly compacted sub-base of around 100mm, and the patio you choose this spring will still be quietly doing its job in twenty years' time.