At some point, most homeowners with an older driveway ask the same question: is it worth cleaning, or should I just have it replaced? The honest answer depends on what's actually wrong with it, and more often than not, the answer is clean it.
What cleaning can and can't fix
Professional pressure washing with biocide treatment removes biological growth (moss, algae, lichen) as well as surface staining from oil, tyre marks, rust, and general weathering. It restores colour, tightens the surface, and in the case of block paving, includes re-sanding of joints to stabilise the surface. What cleaning cannot do is repair structural failure: sunken or heaved sections, crumbled edges, surface spalling on concrete, or block paving where the sub-base has failed.
Signs that point to cleaning, not replacement
- The surface is intact but discoloured or heavily grown over
- Block paving is in good condition but joints have degraded and moss has taken hold
- Tarmac has surface algae or weathering marks but no cracking or sinking
- Concrete looks grey and dull but is structurally sound
- The driveway looks much older than it actually is
Signs that point to replacement
- Significant cracking across the surface, indicating sub-base movement
- Sunken areas that collect standing water after rain
- Block paving where individual blocks have broken or the pattern has shifted significantly
- Tarmac that's crumbling at the edges or has developed potholes
- Concrete with surface spalling deep enough to expose aggregate
The cost comparison
A professional driveway clean for a standard double driveway typically costs between £150 and £350 depending on size and condition. A replacement driveway for the same area, in block paving or tarmac, typically costs between £3,000 and £8,000. The gap is significant enough that cleaning is almost always worth trying first, even if replacement is the eventual outcome. In the majority of cases we see across Kent and Sussex, a drive that homeowners thought needed replacing simply needed a proper clean.
What happens if you clean and it still looks poor?
Occasionally a surface reveals more problems once it's clean: faded colour on concrete that was masked by grime, or blocks that are more worn than they appeared under biological growth. In those cases, there are options short of full replacement: surface sealants can restore and protect concrete; individual block sections can be replaced rather than the whole drive. A professional who's honest about what they're seeing on the day will give you a clear picture of what's possible.
If you're not sure which side of the line your driveway falls on, we're happy to take a look and give you a straight answer. No pressure, no sales pitch. Just an honest assessment and a fixed quote if it's a job we can solve for you.
See our driveway and patio cleaning service for more on what we do, the surfaces we cover, and how to get a free fixed-price quote.