Resin driveways are sold as the surface you lay once and stop thinking about. Then the first proper autumn arrives, leaves sit in the shady corner for a few weeks, and by January there’s a green film by the gate that’s slippery underfoot. Resin driveway cleaning isn’t complicated, but it’s easy to get wrong. Too much pressure, the wrong nozzle or a solvent on an oil stain can loosen stones or soften the resin itself, and that kind of damage doesn’t wash off.

This guide covers how to tell which type of resin you have, why it discolours, what’s safe to do yourself, and how we clean resin driveways, paths and patios without harming the surface.

Resin is low-maintenance, not no-maintenance

Resin is weed resistant, hard wearing and doesn’t scatter gravel across the lawn. None of that means it looks after itself. DALTEX, one of the best-known UK resin and aggregate brands, says as much in its own resin bound maintenance guide, and its customer aftercare advice says the surface should be cleaned periodically with a pressure washer or a sweeper fitted with water jetting.

The catch is that resin is a thin wearing layer of stone held together by a binder. Treat it like concrete and you can damage the binder or pull stones out. Treat it too gently and the growth never really shifts. Getting between those two is the whole job.

Resin bound or resin bonded? How to tell which you have

Many owners don’t know which one they have, and it matters, because the two are built differently and need different levels of care.

Resin bound surfaces are made by mixing the stone through the resin and trowelling it flat. DALTEX’s comparison of the two systems describes a smooth, flat finish with no loose gravel and a porous surface that lets water drain through. Laid on a permeable base, it’s SuDS compliant.

Resin bonded works the other way round. Resin is spread over the base and the stone is scattered on top while it’s still tacky. You get the look of loose gravel, but water can’t pass through and some stones stay loose. Addagrip’s specifying guide notes that bonded systems may lose more aggregate over time, particularly in high-wear areas. Its gravel look sits well with older buildings, which is why we often find it on estate drives, historic sites and around listed properties.

	Resin bound	Resin bonded
How it’s made	Stone mixed through the resin, then trowelled flat	Resin spread on the base, stone scattered on top
Finish	Smooth and seamless, no loose stones	Textured gravel look, some stones stay loose
Drainage	Permeable, and SuDS compliant on a permeable base	Not permeable, so water runs off
Typical use	Driveways, paths, patios and public spaces	Access roads, slopes, light-use drives and period properties
Cleaning risk	Dirt and growth clog the gaps, so it drains less well	Stones are only partly bedded, and high pressure loosens them

Not sure which you have? Run your hand over it and pour a little water on. Bound feels smooth and the water soaks in. Bonded feels like gravel stuck down, and the water runs off.

Why resin driveways go green, dull and slippery

Most resin problems come from what settles on the surface rather than the surface itself. These are the ones we see most.

• Green algae and moss. Worst in shade, under trees and on north-facing areas that never fully dry out.
• Black spots and lichen. Ingrained growth that rain and sweeping won’t move.
• Leaf staining. The DALTEX aftercare guide warns that tannins from leaf debris can stain the surface, and rotting leaves give moss somewhere to start.
• Weeds. They rarely come up through the resin. They grow from wind-blown seed in debris that has built up on top, which is why DALTEX points out that weed resistant doesn’t mean weed free.
• Oil and fuel drips. Solvents in particular soften and damage the resin binder.
• Dull, faded colour. A film of grime and organic growth hides the colour of the stone.
• Slower drainage. On bound surfaces, dirt and growth fill the gaps, so water sits on top instead of soaking through.
• Slippery when wet. On paths, steps and commercial entrances that’s a safety problem, not just a cosmetic one.

One problem cleaning can’t fix is darkening or yellowing across the whole surface. DALTEX explains that aromatic resin isn’t UV stable and turns darker in sunlight, while aliphatic resin keeps its appearance. Its guidance on why it only recommends UV resistant resins describes the tell-tale sign, with patches of original colour left wherever something like a bin or plant pot has shaded the surface. If that’s what your drive looks like, the change is in the resin itself, and we’ll tell you so at survey rather than sell you a clean that won’t change it.

Can you jet wash a resin driveway? The risks

Yes, but gently. DALTEX’s homeowner aftercare guide allows a portable pressure washer rated up to 150 bar, with a fan jet and the lance kept at least 200mm from the surface. Addagrip gives the same limits for its resin bound systems. Most DIY damage comes from going beyond that, or from reaching for the wrong product.

These are the mistakes worth avoiding.

• Getting close with a narrow or turbo nozzle. A concentrated jet can blast resin and stones out of the surface.
• Uneven lance work. Holding a lance at varying distances leaves stripes and patchy areas that show up once it dries.
• Solvents on oil stains. White spirit, petrol and similar products soften the binder. DALTEX recommends a mild detergent, brushed in and left for around ten minutes before washing off.
• Guessing at bleach. Too strong, too weak or applied unevenly, and you can end up with a blotchy finish.
• Wire brushes and metal tools. They scratch the surface and loosen stones.
• Leaving leaves to lie. Staining and moss follow.

Be more cautious again on a bonded surface. The stones are only partly bedded into the resin, and high pressure makes loose stones worse.

How we approach resin driveway cleaning

We clean resin at low pressure and let hot water and chemistry do the work that force would otherwise do. Depending on the surface, a clean combines up to three stages, starting with the surface clean.

A low pressure surface clean

Instead of a hand lance, we use a flat surface cleaner. It’s a rotary disc that holds the jets at a fixed height above the resin, so every part of the drive gets the same treatment. We move it in overlapping figure-of-eight passes, which avoids the lines and patchy spots a lance leaves behind. It’s the same reason our driveway and patio cleaning on block paving and stone is done with rotary cleaners rather than lances.

Low pressure protects the binder and keeps the stones where they are. Manufacturers are clear that excessive pressure damages resin, and a flat surface cleaner gives us a consistent finish without needing more of it.

Where hot water fits in

Manufacturer advice for homeowners says to use cold water only when pressure washing resin bound, and for a domestic pressure washer that’s sensible. We only bring in heat where grease or ground-in grime calls for it, and its job is to let us keep the pressure low rather than turn it up. It’s never a way of cleaning harder.

Restoring colour with softwash and biocide

Pressure alone takes off what’s sitting on the surface. It doesn’t kill what’s rooted in it. That’s what the softwash is for. We apply a controlled sodium hypochlorite wash that kills ingrained algae and organic staining and brings back the stone colour that growth and dirt have been hiding.

People are often surprised that bleach goes anywhere near resin, because some retail products and DIY guides say it causes damage. The manufacturers say otherwise. DALTEX’s aftercare guidance recommends a strong bleach solution for ingrained algae, used in line with the product instructions and followed by a thorough rinse with clean water. The risk isn’t bleach itself. It’s getting the strength wrong or putting it on unevenly, which is exactly why we control both.

Once the surface is clean, a biocide goes on to kill off moss and any remaining growth. That’s what keeps the drive cleaner for longer, instead of greening up again within a season.

Before any softwash, lawns, borders and planting next to the surface are protected and rinsed down, and we ask for pets to be kept inside until the area has been rinsed off. If there’s a pond close to the edge, mention it at survey so it can be covered.

Orange rust spots from garden furniture or metal fixings need a different treatment altogether. Rust removal is part of our specialist cleaning and sealing work, and we’ll look at marks like these at survey and tell you what can realistically be done.

Keeping your resin clean between visits

A few habits make a real difference to how long a clean lasts.

• Sweep regularly with a stiff broom, especially in autumn, so leaves can’t stain the surface or seed moss.
• Deal with oil spills straight away using a mild detergent, never a solvent.
• Avoid turning the steering wheel while the car is stationary. DALTEX’s guide says this helps prevent tyre marks.
• If you salt or grit the drive in winter, wash it off thoroughly once the weather turns.
• Keep skips, heavy loads and sharp point loads such as motorbike stands off the surface, and never drag anything heavy across it.
• Book a professional clean and biocide treatment when the green or the dullness comes back.

On commercial sites, car parks and shared estate drives, the same rules apply on a bigger scale. Our commercial cleaning services cover resin alongside the rest of the site, with site-specific RAMS issued before every visit.

Get a quote for resin driveway and patio cleaning

Kent Property Cleaning Ltd is an exterior cleaning and property maintenance company based in Minster on Sea, on the Isle of Sheppey. We work across Kent and the South East, and increasingly further afield, and much of our work is on larger homes, estates, manor houses and listed buildings where the surfaces are older and the finish matters. Our teams are our own, in branded uniform, and we carry £10 million public liability insurance.

Every job starts with a free survey. We’ll tell you whether your surface is bound or bonded, what cleaning will and won’t achieve, and give you a written quotation. While we’re there, we can look at the rest of the property too, from roof cleaning to the other residential exterior cleaning services we offer. Call 07392 007579 or email [email protected] to book.

FAQs

Can you jet wash a resin driveway?

Yes, as long as it’s done gently. DALTEX’s limits for homeowners are a pressure washer rated up to 150 bar, a fan jet, and the lance kept at least 200mm from the surface. We use a flat surface cleaner at low pressure instead of a lance, which gives a more even finish with less risk to the binder.

Is bleach safe to use on a resin driveway?

Used correctly, yes. DALTEX’s own aftercare guidance recommends a strong bleach solution for ingrained algae, followed by a thorough rinse with clean water. Problems come from guessing the strength or applying it unevenly, which is why we use a controlled sodium hypochlorite softwash.

Will moss come back after resin driveway cleaning?

Over time it will, especially under trees and in shade. The biocide we apply after cleaning kills off remaining growth so the surface stays clean for longer, and regular sweeping slows regrowth further. Shaded drives usually need attention more often than open, sunny ones.

Can cleaning fix a darkened or yellowed resin driveway?

Only where the colour loss is down to dirt or growth. Darkening caused by a non-UV-stable resin is in the resin itself, so no clean will reverse it. We’ll tell you which you’re dealing with at survey.

My resin driveway puddles. Will cleaning help?

It can, if the gaps in a resin bound surface are clogged with dirt and organic growth. Cleaning opens them back up so water can drain through again. If the puddling comes from the base or the original installation, cleaning won’t fix it, and we’ll say so.