How to clean pavers in five steps: sweep the surface, wet it down, apply a pH-neutral cleaner, work it with a soft brush, then rinse thoroughly. That handles most routine dirt on most materials without any risk to the stone.
The part that matters more is what you use before you reach for anything stronger. Natural stone is not one material, and the acid or high-pressure approach that shifts a stain from one stone will permanently damage another. Identify what you have before you clean it.
Cleaning method by paver material
Different stones respond differently, mostly because of what they are made from. Limestone, travertine and marble are calcium-based and react with acid. Bluestone, granite and porphyry are harder and denser. Sandstone is porous and varies a great deal by variety.
| Material | Routine cleaning | Pressure washing | Avoid | Notes |
|---|---|---|---|---|
| Bluestone | pH-neutral cleaner, soft brush | With care, low pressure at distance | Acid washing, harsh chemicals | Dense, but acid washing is not recommended on it |
| Travertine | pH-neutral cleaner, soft brush | Not recommended | Acid, bleach, abrasive pads | Calcium-based and porous, etches readily |
| Limestone | pH-neutral cleaner, soft brush | Not recommended | Acid, bleach, abrasive pads | Calcium-based, marks easily |
| Marble | pH-neutral cleaner, soft cloth or brush | Not recommended | Acid, bleach, anything abrasive | Softest of the group, most easily etched |
| Sandstone | pH-neutral cleaner, soft brush | Low pressure only, and test first | High pressure, acid | Porous and variable, some varieties are soft |
| Granite | pH-neutral cleaner, brush | Tolerates it better than most | Acid, though damage is slower | Hardest of the common paving stones |
| Porphyry | pH-neutral cleaner, stiff brush | Generally tolerant | Acid | Naturally textured surface holds dirt in the grain |
| Concrete paver | General paver cleaner | Tolerates it | Very high pressure at close range | Not natural stone, tolerances differ |
If you do not know which stone you have, treat it as the most sensitive on this list. A pH-neutral cleaner and a soft brush will not damage anything, and starting gentle costs you a second pass at worst.
What not to use on natural stone paving
Four things do most of the damage, and all four get recommended online.
Acid is the worst offender. On limestone, travertine and marble it dissolves the surface, leaving pitting, dulled patches and increased porosity that makes future staining worse. The damage is permanent and cannot be polished out of an outdoor paver. Even on denser stone the position is cautious, and there is a full case for why acid washing bluestone is a bad idea that applies well beyond bluestone.
Bleach is the second. It can lighten and blotch natural stone unevenly, it damages surrounding planting when it runs off, and the whitening it produces is often mistaken for cleaning when it is actually bleaching the stone itself.
Salt is the third, and it turns up constantly as a weed remedy. It draws into porous stone, then works back out as the surface dries, which contributes to efflorescence and to surface breakdown over time. It also kills the planting around the paving.
Wire brushes and abrasive pads are the fourth. They scratch the surface, and on a honed or polished finish the scratching is immediately visible. Use a soft or medium nylon brush and let the cleaner do the work.
Routine cleaning, step by step
- Sweep or blow the surface clear. Loose grit turns into abrasive slurry the moment you add water, so get it off first.
- Wet the paving down. Pre-wetting stops a porous stone drawing cleaner straight into the surface and helps the cleaner stay where you put it.
- Apply a pH-neutral cleaner. Follow the dilution on the label. Work in sections small enough that the cleaner does not dry before you rinse.
- Work it with a soft brush. A deck brush on a long handle is enough for most surfaces. Textured stone such as flamed or split-face needs a little more brushing because the grain holds dirt.
- Rinse thoroughly. Cleaner residue left on the surface attracts dirt and can mark as it dries. Rinse more than feels necessary.
- Let it dry and check. Stone looks darker wet. Judge the result once the surface has dried fully, not while it is still damp.
- Deal with what is left separately. Anything still visible after a proper routine clean is a specific stain, and it needs a specific treatment rather than a stronger general one.
Removing specific stains
Match the treatment to the stain rather than escalating the strength of what you are using.
Oil and grease
Oil sits in the pores rather than on the surface, so scrubbing alone rarely works. A poultice, which is an absorbent paste left on the mark to draw the oil back out, is the usual approach on natural stone. Act quickly: fresh oil comes out far more readily than oil that has been sitting through a summer.
Rust
Rust marks usually come from metal furniture feet, garden tools or reinforcement in an adjacent structure. Many commercial rust removers are acid-based, which makes them unsuitable for limestone, travertine and marble. Check the product against your stone before use, and treat any rust remover as something to test in a hidden area first.
Organic growth, moss and algae
Green and black growth is a moisture problem before it is a cleaning problem. The growth returns because the surface stays damp, usually from shade, poor falls or a blocked drainage point. Clean it off with a pH-neutral or purpose-made outdoor cleaner and a brush, then fix the moisture if you want it to stay off.
Efflorescence
Efflorescence is the white powdery bloom that appears on paving as salts move to the surface with moisture and are left behind when it evaporates. It is frequently mistaken for a stain and treated with acid, which is the worst possible response on calcium-based stone. It usually reduces on its own over the first year, and the real fix is addressing the moisture path underneath.
Barbecue, food and drink
Treat these as oil, tannin or acid marks depending on what was spilled. Wine and citrus are acidic and can etch calcium-based stone on contact, so speed matters more than product choice. Blot rather than wipe, so you lift the spill instead of spreading it into a wider mark.
Pressure washing paving without damaging it
Pressure washing is the fastest way to clean paving and the fastest way to ruin it, and the difference is pressure, distance and the stone you are pointing it at.
The damage looks like this: a lightened, roughened band where the nozzle passed too close, joint sand blasted out of the joints, and on softer stone a visible loss of surface texture. Once the surface is eroded, nothing puts it back.
If you are going to use one, work at the lowest pressure that shifts the dirt, use a fan nozzle rather than a pencil jet, keep the nozzle well back from the surface, and move at a consistent speed so you do not leave stripes. Test on a hidden section first, every time, because the same machine at the same setting behaves differently on travertine than it does on granite.
Expect to re-joint afterwards. Pressure washing removes jointing sand, and open joints let weeds and water straight back in, so plan on refilling the joints as part of the same job.
How often should paving be cleaned?
A light sweep and hose every few weeks, a proper clean once or twice a year, and prompt attention to spills is enough for most residential paving. Shaded areas, paving under trees and anything that stays damp will need the full clean more often.
Cleaning is one part of a wider routine that also covers sealing, joints and drainage. If the paving is sealed, cleaning is easier and stains have less chance to set, and the process for sealing paving stones outdoors runs on its own schedule alongside this one. The rest of the seasonal side, including inspection after extreme weather, sits with maintaining stone paving in Australian conditions.
Getting the cleaning right for your stone
The single most useful thing you can do is identify the material before you clean it, because that one answer rules out most of the ways this goes wrong. If you are choosing paving rather than cleaning it, handling natural stone paving samples and asking how each one is maintained is worth doing before you order, not after.
Frequently asked questions
1. What is the best thing to clean pavers with?
A pH-neutral cleaner and a soft brush is the best general answer, because it works on every common paving material without risk to the surface. Use water and a brush alone for light dirt. Reserve anything stronger for a specific stain you have identified, and check it against your stone first.
2. How do you make pavers look new?
Clean thoroughly first, because most paving that looks tired is dirty rather than worn. If it still looks dull after a proper clean, the surface has usually either lost its seal or picked up a film from previous cleaning products. Re-sealing restores depth of colour on porous stone, and refilling the joints does more for how a paved area reads than most people expect.
3. What should you not use to clean pavers?
Avoid acid, bleach, salt and abrasive tools such as wire brushes. Acid dissolves calcium-based stone including limestone, travertine and marble, and its damage is permanent. Bleach lightens stone unevenly and harms surrounding planting. Salt draws into porous stone and contributes to surface breakdown.
4. What is the best paver cleaner?
For natural stone, a pH-neutral cleaner made for stone is the safest choice, and it handles most routine cleaning. Products sold as general paver or driveway cleaners are often acidic and formulated for concrete, so check the label before using one on stone. Match the product to the material rather than to the surface it is sitting on.
5. Can you pressure wash natural stone paving?
Some stones tolerate it and some do not, so it depends on the material. Denser stones such as granite and porphyry handle it better than travertine, limestone and softer sandstone, which can lose surface texture. If you do use one, work at low pressure with a fan nozzle well back from the surface, test in a hidden area first, and plan to refill the joints afterwards.
6. How do you remove efflorescence from paving?
Start by leaving it alone and brushing off the dry deposit, because efflorescence usually reduces over the first year as the salts work through. Do not treat it with acid, particularly on limestone or travertine, where the acid does more damage than the bloom ever would. If it persists, the underlying cause is moisture moving through the paving, so the durable fix is drainage rather than cleaning.
