Block Paving Drivewaysin Darlington, Durham & StocktonBuilt to Last, Not Just Look Good on Day One

The sub-base carries the load of every vehicle that ever drives onto the driveway, and it is the part of the job that is invisible once the blocks go down. For a domestic driveway we typically excavate to a depth that allows for a compacted stone sub-base of at least 100–150mm, increasing where the existing subgrade is soft, clay-based or poorly draining, which is common across parts of County Durham and Teesside. The stone is laid in layers, usually no more than 100mm at a time, and each layer is compacted with a vibrating plate or roller before the next goes on. Skipping this staged compaction and simply tipping the full depth of stone in one go leaves voids and inconsistent density through the base, which is exactly where settlement and rutting start once vehicles begin using the driveway.

Where ground conditions are particularly poor, waterlogged clay, made-up ground, or areas close to trees with active root systems, a geotextile membrane is laid beneath the sub-base to stop stone working its way down into the subgrade and the subgrade working its way up into the stone. This single addition, done at the point of construction, prevents a great deal of the slow settlement that otherwise shows up as depressions two or three winters later.

Herringbone, whether at 45 or 90 degrees, is generally the strongest pattern for driveways because the interlocking arrangement resists the lateral thrust generated by turning wheels far better than a stretcher bond or basketweave layout. For a driveway that sees regular vehicle turning, most domestic drives do, particularly at the entrance and any turning area, herringbone is usually the practical recommendation, with a contrasting border or soldier course used to frame the design without compromising the structural pattern in the main body of the drive.

Stretcher bond and basketweave patterns still have their place, particularly on paths, patios or driveways with very light, straight-line vehicle use, and they can look sharper in certain block formats and colours. We will talk through which pattern suits both the aesthetic you want and the way the driveway will actually be used, rather than defaulting to whichever is quickest to lay.

Haunched concrete edge restraints are non-negotiable on a driveway that will carry vehicles, without them, the outward pressure from wheel loading gradually spreads blocks apart at every joint, starting at the edges and working inward over time. The restraint is poured against the sub-base and back-filled so it is fully supported, not just bedded loosely on the surface, and it should be continuous around the full perimeter of the paved area including any curves.

Drainage and surface falls are worked out at the design stage using levels taken across the whole area, so water is directed towards a soakaway, gully or permeable jointing detail rather than towards the house or a neighbouring boundary. Where planning rules around permeable surfacing apply, relevant to some driveways depending on size and existing hard standing, permeable jointing compounds or block paving systems can be specified so surface water infiltrates through the paving itself into a permeable sub-base below, rather than running off to a drain.

Domestic driveways are specified for car and light van loading, with sub-base depth and edge restraint sized accordingly. Commercial forecourts, shared accesses and any area that will see delivery vehicles or regular heavier traffic need a deeper, more heavily compacted sub-base and, in some cases, a different block thickness rated for higher loading. We assess actual use rather than assuming every job takes the same specification, because over-specifying wastes money and under-specifying costs far more to fix later.