Your neighbour recently had their driveway done. Or maybe you are selling the house. Or maybe you just noticed, now that summer is here and you are spending more time outside, that the driveway looks embarrassing in a way you had stopped registering.

Here is the thing: most driveways that look like they need replacing do not need replacing at all. What they need is a professional clean.

What Happens to a Driveway Over Time

Driveways take a constant beating. Car tyres bring in oil and rubber residue. Rain washes organic debris into the joints. Moss and algae find their way into every damp surface crack and joint gap. Once they establish themselves, they spread quickly.

Most Northampton driveways show visible moss growth within two to three years of being laid. On block paving, weeds push up through the jointing sand. On concrete or tarmac, algae turns the surface progressively darker and greener. The driveway does not look dirty in the way an unwashed car does. It just looks old and neglected.

Why a Domestic Pressure Washer Is Not Enough

You can buy a domestic pressure washer for under £100. Many homeowners try this first, and the results are disappointing.

The problem is power and flow rate. A domestic machine generates around 100 to 130 bar of pressure. A professional machine runs at 200 bar or more, with a significantly higher water flow rate. The difference in results is substantial: professional equipment penetrates the surface in a way domestic machines simply cannot.

There is also technique. Block paving requires a specific spray angle to avoid loosening the jointing sand. Too direct an angle and you strip the joints and create a new problem. Professional cleaners know the right approach for each surface type, which matters as much as the equipment itself.

What a Professional Driveway Clean Involves

A standard professional driveway clean typically includes these stages:

  1. Pre-treatment with a biodegradable weed and moss killer, applied and left to work
  2. High-pressure washing to remove dirt, algae, organic growth, and staining
  3. Re-sanding of joints on block paving (if included in the service)
  4. Optional sealing to protect the surface and slow future moss and algae growth

The sealing step is worth considering seriously. A sealed driveway resists staining, holds the jointing sand in place longer, and stays looking cleaner for significantly longer. It adds to the upfront cost but most homeowners who have it done consider it good value.

What Does Driveway Pressure Washing Cost in Northampton?

Based on 2026 local rates for the Northamptonshire area:

  • Small driveway (up to 30m2): £80 to £150
  • Medium driveway (40 to 60m2): £150 to £250
  • Large driveway (70m2 and above): £250 to £400
  • Adding resealing on a medium driveway: add approximately £150 to £200

These figures cover pressure washing and basic weed treatment. Heavily stained surfaces or those with significant oil contamination may require a specialist pre-treatment at additional cost.

Which Surface Type Do You Have?

The surface matters for both the method and the price.

Block paving is the most common type across Northampton housing estates, particularly in areas like Weston Favell, Mereway, and Lodge Farm. It responds very well to pressure washing. After the clean, joints should be re-sanded to prevent rapid weed regrowth.

Concrete is durable and responds well to high-pressure washing. Oil drips from cars are the most common problem and usually require a degreasing pre-treatment.

Tarmac needs lower pressure than block paving to avoid surface damage. The results are still dramatic. A tarmac surface covered in algae can come back looking close to new.

Pattern imprinted concrete requires careful pressure setting and should have a sealant applied after cleaning to maintain the pattern and colour.

How Long Do the Results Last?

A professionally cleaned and sealed driveway typically stays in good condition for two to four years before it needs attention again. Unsealed driveways in shaded or north-facing positions, which are common across many Northampton streets, may need cleaning every one to two years as moss and algae re-establish faster in the shade.

A Note on Patios and Paths

Everything above applies equally to patios and external paths. Patio slabs that are slippery with algae and moss in winter are a safety issue, not just an aesthetic one. A professional jet wash takes most patios from visibly neglected to genuinely impressive in a single visit.

We regularly clean driveways and patios together for homeowners across Northampton, which is often the most cost-effective approach since the team and equipment are already on site.

Get a free quote for driveway or patio cleaning or call us on 07743 636769. Monday to Saturday, 8am to 6pm, across all NN postcodes.