Concrete Patio Ideas, Finishes and How They're Built
A concrete patio is one continuous slab poured in place, and it can look like almost anything: plain and brushed for a utility area, stamped to look like slate or cobbles, or washed back to show the stones in the mix. Because there are no joints between units, there's nothing for weeds to grow through and no individual slab to rock or sink. What makes it last is the part you never see: a firm base, the right falls away from the house and joints in the right places.
What kind of concrete patio do you want?
There are four common finishes, and the choice is mostly about looks and grip.
Plain or brushed. The cheapest finish. A stiff brush pulled across the surface gives texture and grip. Good for side returns, bin stores and the area round a shed.
Pattern imprinted (stamped). A colour hardener is trowelled into the surface, then rubber mats press a pattern into it: ashlar slate, cobbles, setts, herringbone brick or natural stone. Contrasting borders frame it.
Exposed aggregate. The top few millimetres of cement paste are washed off to show the stones in the mix. Very grippy, natural looking, good round steps and pools.
Coloured plain concrete. Colour through the surface without a pattern, for a clean modern look.
Stamped is the one most people mean when they search for "concrete patio ideas", and it's the same process we use on our pattern imprinted concrete driveways, just with a lighter build-up because nobody's parking on it.
Concrete patio ideas that work in a UK garden
A few design choices make a bigger difference than the pattern itself.
Borders. A contrasting border (a darker colour, or a brick soldier course pattern) hides small irregularities at the edges and makes a plain shape look deliberate.
Match the house, not the brochure. Grey slate patterns sit well against modern render. Buff, sandstone and terracotta tones suit older red brick. We bring samples to the garden so you see them against your own walls.
Steps and level changes. Concrete can be formed into steps and raised areas in the same finish, so the patio and steps match.
Run it to the drive. If the side path joins a concrete drive, using the same pattern or a related colour ties the whole property together.
Mix finishes. An imprinted main area with an exposed aggregate concrete path, or the reverse, adds texture without clutter.
How a concrete patio is built
The layers are thinner than a driveway's, but the logic is the same.
Dig out. Soil and vegetation come off down to firm ground. Patios get less depth than drives because they only carry people and furniture.
Sub-base. Crushed stone, compacted. The LABC Warranty technical manual gives 75mm as the minimum sub-base for a pathway and 100mm for a light-duty drive. On soft or made-up ground it needs more.
Forms and levels. Timber or steel formwork sets the shape and, more importantly, the falls.
Pour. The same manual gives 75mm as the minimum thickness of in-situ concrete for paths, against 100mm for driveways. Imprinted mixes usually carry fibres to reduce fine cracking.
Finish. Brushed, stamped (colour hardener, release agent, mats) or retarded and washed off for exposed aggregate.
Joints. Control joints are cut to make the slab crack where we want it to, if it cracks at all. The trade rule of thumb is a joint roughly every 30 times the slab thickness, and LABC guidance limits in-situ bays to 20 square metres.
Wash and seal. Imprinted patios are washed down 24 to 96 hours after the pour, then sealed with a clear sealer once dry.
Falls, drainage and the damp proof course
This is where patios go wrong. Concrete is not permeable, so every drop of rain has to run off the surface somewhere.
The LABC Warranty guidance is clear: paving next to a house should be laid at least 150mm below the damp proof course, and should fall away from the building at no less than 1:80 and no more than 1:12. In practice that's a gentle slope you barely notice when you're standing on it, with the water running to a lawn, a border or a gully.
Two things to avoid: a patio laid tight under the DPC to save a step (it bridges the damp course and puts water against the wall), and a patio that falls towards the back door because the garden slopes that way. If the garden falls to the house, a channel drain along the edge of the patio is the fix.
In England, a back garden patio for a house (not a flat) is normally permitted development under Class F of the General Permitted Development Order. The 5 square metre condition on non-porous surfaces only applies to ground between the front wall of the house and a highway, which is why front gardens and driveways are the ones that need the drainage planned in.
Concrete patio vs slabs vs resin
Each has a place, and it depends what you want from the space.
Slabs (sandstone, porcelain): individual units on a mortar bed. Real stone, and one damaged slab can be lifted and replaced. The joints need pointing and can hold weeds and moss, and a poorly bedded slab rocks.
Concrete patio: one slab, so no weeds through the joints and no rocking units. Stamped concrete gives the impression of stone rather than a perfect copy. The trade warning is that concrete is rigid, so a crack or a patch can't be repaired invisibly. Doing it right first time matters.
Resin bound: a smooth, permeable finish of stone held in UV-stable resin, which drains through. It suits contemporary gardens and sloping sites where you don't want to build in falls and gullies. We lay it too, so we'll tell you on site which suits your garden.
Concrete patio questions, answered
Is a stamped concrete patio slippery?
A stamped surface has texture, and the sealer can carry an anti-slip additive. The bigger risk in a shaded UK garden is moss and algae, so a wash down once or twice a year matters more than the finish.
How long does a concrete patio last?
Properly laid and resealed every few years, a concrete patio will last decades. The sealer is the part that wears: most acrylic sealers need recoating every two to five years.
Can you lay a concrete patio over old slabs?
Not as a rule. Old slabs on a sand or spot-mortar bed move independently, and that movement shows through as cracks in the new slab. Breaking out to a sound base is the reliable way.
For a feel of what the slab itself costs, our concrete driveway cost breakdown explains what goes into the price of concrete work, and the same base-first thinking applies to a concrete hardstanding. Drive Tech lays imprinted and exposed aggregate patios in Wolverhampton and the surrounding towns, and Pete will bring the pattern samples to your garden when he measures up.
Comments