How a patio should be laid
Like a driveway, a patio is only as good as the work underneath. The usual steps:
- Set out and level. The area is marked out and levels are taken from the house. The finished patio must sit at least 150mm below the damp-proof course of the house, and air bricks must not be covered.
- Excavate. Turf and topsoil are dug out, usually to around 150mm, allowing for the sub-base, bedding layer and slab thickness.
- Sub-base. Compacted crushed stone, typically 75mm to 100mm, gives a stable foundation. On Middlesbrough's clay, a membrane and a slightly deeper base reduce movement.
- Bedding. Slabs are bedded on a full bed of mortar, not on spots or dabs. Full bedding stops slabs rocking, cracking and trapping water underneath, which causes staining and frost damage.
- Fall. The surface is laid with a gentle fall away from the house, around 1 in 60 to 1 in 80, so rain runs off towards a lawn, border, channel drain or soakaway.
- Jointing. Joints are filled with sand and cement mortar or a modern resin-based jointing compound. Good jointing keeps weeds and ants out and locks the slabs together.
- Priming porcelain. Porcelain slabs need a special slurry primer on the back so they bond to the mortar bed, because they barely absorb water.
A typical 20m² to 30m² patio usually takes a few days, longer if there are steps, walls, raised beds or lots of cuts.
How much does a patio cost in Middlesbrough?
Checkatrade's 2026 patio laying guide gives an average range of about £65 to £340 per square metre installed, with some premium natural stone jobs going higher. The paving itself is the biggest variable:
| Paving type | Where it usually sits on price |
|---|---|
| Concrete slabs | Lower end of the range |
| Indian sandstone | Middle of the range |
| Porcelain | Upper-middle to top |
| Granite, limestone, slate | Upper-middle to top |
Source: Checkatrade patio laying cost guide, 2026. National averages; your written quote reflects your garden.
Other things that affect the price:
- Access. A mid-terrace house with no side passage means every slab, bag of cement and barrow of spoil goes through the house or over a wall.
- Levels. A sloping garden may need steps, retaining walls or a raised patio.
- Pattern and cuts. Random patterns with mixed slab sizes and curved edges need more cutting.
- Drainage. Channel drains along the house wall or a soakaway add cost but protect your walls.
- Removing an old patio or concrete base.
- Extras such as lighting, walls, raised beds and edging.
Choosing paving for a Middlesbrough garden
Indian sandstone is the most common choice on Teesside patios. It is natural stone with riven (textured) or sawn (smooth) faces, in buff, grey, brown and mixed tones. It weathers attractively, but lighter colours can show algae in shaded gardens and it benefits from sealing.
Porcelain is very hard, does not stain easily, resists moss and algae, and has a modern, even look. Outdoor porcelain is usually 20mm thick. It is harder to cut and lay, needs a primer to bond, and costs more, but it is very easy to clean.
Concrete slabs are the budget choice and come in imitation stone finishes. They are perfectly serviceable, especially for paths or areas behind sheds and garages.
Granite, slate and limestone give a premium, distinctive finish. They are heavy, hard-wearing and usually sit at the top of the price range.
Block paving can also be used for patios and paths, and is handy if you want it to match a block paved drive. See block paving.
Think about where the sun falls. North-facing back gardens, common on terraced streets, stay damp and green for longer, so a surface that is easy to clean, such as porcelain, often pays for itself. In a sunny, south-facing garden, darker paving can get hot underfoot in summer.
Drainage and planning for patios
Drainage. Water has to go somewhere. A patio laid against the house with no fall, or with a fall towards the house, can push water against walls and into air bricks. On heavy clay, water from a large patio can collect at the bottom of the garden. A channel drain along the house, a soakaway or a planted border at the low end deals with it. Ask how each quote handles rainwater.
Planning. In England, a patio in a back garden does not normally need planning permission, provided it is at or near ground level. Raised patios or decking more than 30cm above the ground, work to listed buildings, and some conservation areas need checking. The front-garden rule on impermeable surfaces over five square metres applies to front paths and parking areas, not back gardens. If you are not sure, check with your council's planning team or the Planning Portal before work starts.
Looking after a patio
- Brush regularly and clear leaves, which stain natural stone.
- Wash with a stiff brush and water or a stone-safe cleaner. Pressure washers are fine on porcelain but can erode soft sandstone and blast out jointing on a high setting.
- Re-point any cracked or missing joints before weeds get in.
- Consider sealing natural stone, which helps resist staining from oil, wine and barbecue fat.
- Deal with green algae in shady areas with a suitable patio cleaner.
Patios, paths and driveways together
Many people price a front drive, a side path and a back patio together. Using matching or complementary paving, such as a block paved drive with a sandstone patio in a matching tone, makes the house look joined up. Doing the work in one visit can also save on skip hire, deliveries and labour compared with separate jobs. Mention everything you are thinking about at the survey, even if you only plan to do part of it now.
Questions people ask
How much does a patio cost per m²?
Checkatrade's 2026 guide puts the average at about £65 to £340 per square metre installed. Concrete slabs are cheapest; porcelain and premium natural stone cost the most.
Is porcelain or sandstone better for a patio?
Porcelain is harder, more stain resistant and easier to clean, but costs more and is harder to lay. Indian sandstone is cheaper, has a natural look and weathers well, but can go green in shade and benefits from sealing.
Do I need planning permission for a patio?
Not usually for a ground-level patio in a back garden in England. Raised patios over 30cm, listed buildings and some conservation areas need checking.
How long does it take to lay a patio?
A typical 20m² to 30m² patio takes a few days. Steps, walls, raised beds and complex patterns add time.
Why does my patio go green?
Algae and moss grow where paving stays damp and shaded. Good drainage, regular brushing and a suitable cleaner help; porcelain is far more resistant than sandstone.
Should patio slabs be laid on a full mortar bed?
Yes. A full bed supports the whole slab, stops rocking and cracking and stops water collecting underneath. Spot or dab bedding is a common cause of failed patios.