A sunken driveway area or pothole is fixed by lifting the affected paving, correcting the base underneath, and relaying or patching the surface — simply filling the dip doesn't address why it sank in the first place.
Sunken patches in a driveway almost always come from a problem below the surface: the base wasn't compacted well enough originally, water has got underneath and washed material away, or the edge restraint (the border that holds paving blocks in place) has failed and let the paving spread and settle. Filling a pothole from the top, without addressing what caused it, tends to be a short-term fix — the same spot often sinks again within a season.
A proper repair lifts the affected area, corrects or re-compacts the base, and relays the blocks or patches the tarmac properly. Where the problem is edge restraint failure rather than the base itself, refitting or replacing the edging is often what actually stops the paving spreading and sinking again, even more than the pothole repair itself.
Matching the replacement blocks or tarmac to the existing driveway is usually possible, though an exact colour match depends on how available the original material still is. This is a frequent issue on driveways across Preston and Lancashire, particularly older block paving laid before modern edge-restraint standards became common.
GreenFix provides paving repairs across Preston and Lancashire. From £95 (guide price only, confirmed after assessment).
