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Block Paving vs Tarmac Driveways in Northern Ireland
Block paving costs £70 to £105 per m² in NI, tarmac £55 to £85. Here is the honest comparison on price, lifespan, repairs, drainage and our weather.
Prices and rules reviewed 14 August 2026
Most driveway comparisons come down to "block paving looks better, tarmac is cheaper", which is true and useless. The interesting differences are in what happens underneath, what happens in year eight, and what our weather does to each of them.
Here are 2026 Northern Ireland prices and the trade-offs that actually decide it.
The 2026 prices
| Surface | Northern Ireland cost, installed |
|---|---|
| Block paving | £70 – £105 per m² |
| Tarmac | £55 – £85 per m² |
VAT included, as domestic customers are quoted here. The ranges reflect the depth of the build-up, how much excavated material has to be carted away, and how much edging, kerbing and drainage the job needs.
A worked example: a 40m² driveway
A typical two-car front driveway of 40m², with existing surface removed, new sub-base, edge restraints and a linear drain across the front.
| Block paving | Tarmac | |
|---|---|---|
| 40m² surface | £2,800 – £4,200 | £2,200 – £3,400 |
| Break out and dispose of the old drive | £600 – £1,000 | £600 – £1,000 |
| Drainage channel and connection | £350 – £700 | £350 – £700 |
| Total | £3,750 – £5,900 | £3,150 – £5,100 |
The gap between the two is smaller than people expect — often £600 to £900 on a job this size — because the expensive parts of a driveway are the excavation, the disposal and the sub-base, and those are identical whichever surface goes on top.
What you are really paying for is underneath
A driveway is a small piece of road engineering. Ninety per cent of failures are foundation failures, not surface failures.
- Excavation. Enough depth for the full build-up, not just enough to make the new surface sit flush. For a car-only domestic drive that is usually around 250mm of dig; for anything that will carry a van, more.
- Geotextile membrane over the formation, to stop the sub-base migrating into soft ground. Cheap, quick, and the first thing skipped on a bad job.
- Sub-base. Typically 150mm of compacted crushed stone for cars, laid and compacted in layers rather than dumped and rolled once. This is the part that carries the load.
- Edge restraints. Block paving without properly haunched edges spreads sideways and opens up joints. Non-negotiable.
If a quote is notably cheaper than the others and does not describe the build-up, that is where the money has been saved. Ask what depth of sub-base is allowed and whether the price includes carting away the arisings.
The case for block paving
It is made here
Tobermore manufactures concrete paving in Tobermore, County Londonderry, and Acheson and Glover manufactures in Fivemiletown, County Tyrone. Two of the significant paving manufacturers on these islands are Northern Irish, and the products are made a short lorry journey from most jobs on this island.
That matters twice over. Haulage is a real component of the cost of anything heavy, so paving is keenly priced here compared with much of Great Britain. And when you crack a block in three years, matching units are still being made and are available locally, rather than being a discontinued line from a factory in the Midlands.
Repairs are genuinely easy
Lift the affected blocks, fix what is underneath, relay them, re-sand the joints. Done properly the repair is invisible. If a service company has to dig up part of the drive to reach a stopcock or a gas main, block paving is the only surface that comes back looking as it did.
Design and resale
Edging courses, a contrasting border, a change of pattern at the threshold. It reads as a considered front to a house, and estate agents will tell you it shows in the first photograph.
The case for tarmac
It is faster and less disruptive
A tarmac drive on a prepared base is laid in a day. Block paving of the same size is two to four days of laying, cutting and jointing. If access to the house matters, that difference is worth something.
It is a continuous surface
No joints means no weed seeds germinating in them, no sand to top up, and nothing to sink individually. A well-laid tarmac drive is close to zero maintenance for its first decade.
It handles slopes well
On a sloped Northern Ireland driveway — of which there are a great many — tarmac gives a continuous, grippy surface with no joints for water to run into and no blocks to creep downhill over the years.
Head to head
| Block paving | Tarmac | |
|---|---|---|
| Cost per m² | £70 – £105 | £55 – £85 |
| Install time, 40m² | 3 – 5 days | 2 – 3 days |
| Realistic lifespan | 20 – 30 years | 10 – 20 years |
| Spot repairs | Easy and invisible | Visible patch |
| Weeds and moss | Joints need attention | Very little |
| Oil and fuel stains | Individual blocks replaceable | Softens the binder, stains permanently |
| Slopes | Good with correct edging | Excellent |
| Kerb appeal | Higher | Plain |
Neither is wrong. A rural bungalow with a long straight approach is a tarmac job. A tight urban frontage in Belfast where the driveway is a large part of what people see is usually a paving job.
Drainage and the rules — the Northern Ireland version
Where the water goes
Water from a driveway must not be allowed to run out across the footpath and into the road. On a flat plot a linear channel across the front and a connection to a soakaway is normal; on a sloping plot the design matters more. Anyone who quotes for a new driveway without mentioning drainage has not thought about it.
Permeable block paving — permeable blocks laid on an open-graded sub-base so water drains through the surface — solves the problem at source. It adds roughly £10 to £20 per m² over standard block paving, and it is often the neatest answer on a plot with nowhere obvious to send the water.
Planning and hard surfaces
In England there is a well-known rule that paving more than five square metres of front garden in an impermeable material needs planning permission. Northern Ireland's permitted development order also deals with hard surfaces within the curtilage of a house, but the detail is not identical and councils interpret the grey areas locally. If you are hard-surfacing an entire front garden and there is nowhere for the water to go except the road, ring your council's planning office before you order materials. It is a short call and it is a great deal cheaper than lifting a drive.
Dropped kerbs go to Roads, not the council
This is the one that surprises people who have moved here. If you need to create a new vehicular access or alter an existing one, that is a matter for DfI Roads — the Department for Infrastructure — not your district council. A new access onto certain roads can also need planning permission, which is a council matter. Two bodies, two applications, and they do not do each other's jobs. Establish that the access is possible before you spend anything on the surface.
Living with each one here
Northern Ireland is wet, mild and rarely deeply frozen. That combination is hard on driveways in a specific way: it favours moss and algae over frost damage.
- Block paving. Keep the joints full of kiln-dried sand. Expect to re-sand every few years and to treat moss on north-facing or shaded drives. A gentle wash rather than a lance held close, which blasts the jointing sand out and starts the problem you were trying to fix.
- Tarmac. Keep oil off it. Look for the surface going grey and open, which is the binder weathering out — that is the point at which a surface dressing extends its life by years, and the point after which it does not.
Neither surface needs sealing as a matter of course. A sealant on block paving can help with stains and moss on a shaded drive, but it needs redoing and it is not a substitute for building the drive properly in the first place.
Getting a quote you can compare
Ask every contractor for the same four things: excavation depth, sub-base depth and material, edge restraint detail, and how surface water is dealt with. Ask whether removal of the old drive and disposal is included — that alone can be £600 to £1,000 on a concrete drive.
Then price it yourself first. The driveway cost calculator will give you an indicative range for your area and your dimensions, so you know what you are looking at before anyone arrives with a clipboard. If you are doing the front and the back together, the patio cost calculator covers the other half, and our twelve questions for choosing a builder apply as much to a driveway contractor as to a main contractor.
Prices reviewed August 2026. Indicative estimates for Northern Ireland, VAT included.
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