Asphalt driveways & machine-laid surfacing
In short
Larger drives, shared accesses and long rural approaches surfaced in machine-laid asphalt — denser and more consistent than hand-laid work, and the right answer once an area gets big enough for a paver to be worth bringing in.
Also called: Machine laid asphalt · Asphalt drive · SMA driveway · Hot rolled asphalt
Signs you need this
- A drive or access too large to hand-lay consistently
- A long rural approach, farm entrance or shared access road
- A parking court or small yard for several vehicles
- Regular heavy vehicles — a horsebox, motorhome or delivery lorry
- An existing surface that has rutted where vehicles turn
- Water running down a long drive and scouring the edges
Asphalt and tarmac are the same family and the words get used interchangeably, but there is a practical distinction worth drawing. What most people mean by tarmac on a domestic drive is a hand-laid asphalt concrete. What a highways contractor means by asphalt covers a wider range of engineered mixes — dense asphalt concrete, stone mastic asphalt, hot rolled asphalt — laid by a paving machine to a controlled thickness and rolled to a specified density.
The reason it matters is compaction and consistency. A paver lays material at a uniform depth and pre-compacts it as it goes; a roller then brings it to density behind. Hand-laying with rakes and a small roller can be done very well, but it depends entirely on the crew, and on a big area the variation shows up as differences in texture, thickness and eventually wear. Once an area gets past a certain size — a long drive, a shared access, a parking court, a small yard — machine laying is both better and, per square metre, usually cheaper.
Access decides whether it is possible. A paver and a delivery lorry need room to get in and turn, which rules it out on many town drives and makes it straightforward on a rural approach or a farm entrance. Where a machine cannot reach, hand-laying is not a compromise so much as the only option, and it is done properly by planning around the delivery so the material is worked hot.
Mix choice is a real decision on larger areas. A dense asphalt concrete is the standard workhorse. Stone mastic asphalt has a stronger stone skeleton and a binder-rich mortar, giving excellent rut resistance where vehicles are heavy or turn repeatedly. There are also porous asphalt options that let water through, which is how you get a fully surfaced area that still satisfies the front-garden drainage rule, though they are less common domestically and need an open-graded base to drain into.
The build-up under a larger area is designed rather than assumed. Traffic loading, the strength of the subgrade and the drainage all feed into the sub-base thickness — a drive that takes a delivery lorry, a horsebox or a motorhome needs materially more than one that takes a hatchback. The Specification for Highway Works is the reference the trade works to, and a proper quote for an area of any size should say what it has been designed for.
Long rural drives bring their own problems and they are mostly water. A drive falling downhill for eighty metres collects a lot of run-off, and without cross-falls, interceptor channels or a swale at the bottom, that water ends up scouring the edges and washing out the base. On the ground east of the town — where the land rises fast and rainfall is higher than on the plain — designing where the water goes is a bigger part of the job than the surfacing itself.
What the job covers
- Build-up designed for the actual traffic rather than assumed
- Machine laying where access allows, hand laying where it does not
- Mix specified for the loading — dense, SMA or porous as appropriate
- Compacted crushed-stone sub-base to the designed thickness
- Cross-falls, channels and outfalls designed on longer drives
- Kerbs or edgings bedded and haunched to every free edge
- Rolled to density while the material is hot
What it costs
We don't publish a price for this yet, because a number pulled out of the air is worse than no number at all — your contractor has to honour it. On driveways it would also be close to meaningless: the groundworks are usually the biggest single factor, and how deep the dig has to go varies enormously house to house. You'll get a firm price for your actual job when they ring you back, before any work starts. The quote itself is free and there's no obligation either way.
Common questions
What is the difference between tarmac and asphalt?
In everyday use, nothing — both describe a bitumen-bound surfacing. In the trade, asphalt covers a range of engineered mixes laid to a specification, while tarmac is the everyday word for what goes on a domestic drive. The meaningful distinction on site is whether the material is machine-laid to a controlled depth or hand-laid, and how well it is compacted.
Is machine-laid better than hand-laid?
On a large area, yes — a paver gives a consistent thickness and consistent pre-compaction that is hard to match by hand across hundreds of square metres. On a small or awkward drive a machine cannot get in, and good hand-laying is entirely proper. The thing that actually determines quality either way is whether the material was worked and rolled while hot.
Can asphalt be permeable?
Porous asphalt exists and is used on car parks and access roads. It lets water through the surface into an open-graded base below, which means the area can satisfy the front-garden drainage rule without a channel or a soakaway. It is less common on domestic drives and needs the whole build-up designing as a permeable system, not just the top layer swapping.
My drive is long and the water washes the edges away. What fixes that?
Managing the water rather than surfacing harder. That usually means cross-falls so the run-off leaves the drive at intervals instead of running its whole length, interceptor channels at the low points, and a proper outfall — a soakaway, a swale or a ditch — that can actually take it. Surfacing without doing that is repeating the failure in a better-looking material.
Need this doing in Macclesfield?
Tell us the job and it goes straight to our local contractor — one call back, usually the same day. Free quote, no obligation.