Pressure Washing Pavers: Sealing, Sand and Aftercare Tips

22 October 2026

Pavers are one of the most popular outdoor surfaces across Melbourne Bayside, from driveways in Brighton and Sandringham to courtyards in Hampton, Beaumaris and Mentone. They look fantastic when freshly laid, but salt-laden sea air, shade from established trees, clay-heavy soils and Melbourne's changeable weather all take a toll. Moss, algae, oil stains and efflorescence build up, and the jointing sand slowly washes out.

Done correctly, pressure washing brings pavers back to life. Done poorly, it can strip the sand from the joints, etch the surface and leave you with a driveway that looks worse than before. This guide covers how to clean pavers safely, when and how to re-sand, whether sealing is worth it, and how to look after your paving afterwards.
Why Pavers Need Regular Cleaning in Melbourne Bayside
Bayside conditions are tougher on paving than many homeowners realise. A few local factors are worth knowing about:
Salt air: Coastal moisture and salt can accelerate surface wear and contribute to efflorescence, the white powdery deposit that appears on concrete and clay pavers. Shade and moisture: Properties with mature trees, south-facing courtyards or tight side access stay damp for longer, which encourages moss, lichen and algae. Organic debris: Leaves, flowers and sap from street trees stain pavers and feed mould growth. Vehicle drips: Oil, grease, brake dust and tyre marks accumulate on driveways quickly. Winter rainfall: Melbourne's cooler, wetter months keep surfaces damp, and slippery algae can become a genuine safety hazard.
Regular driveway cleaning and patio maintenance isn't only about appearance. Slippery pavers are a trip and fall risk, and organic growth can hold moisture against the surface, shortening the life of the paving and any sealer on it.
Pressure Washing Pavers the Right Way
Pavers are not the same as a plain concrete slab. They're individual units bedded on sand and held together by jointing sand. That jointing sand is what locks the pavers together, so the aim of pressure cleaning is to remove grime without blasting out the joints or damaging the surface.
Choosing the Right Pressure and Technique
Higher pressure isn't better. Concrete pavers generally respond well to moderate pressure with the correct nozzle, while softer materials such as some limestone, travertine and older clay pavers need a gentler approach. Key principles include:
Use a fan tip nozzle rather than a zero-degree or pencil jet, which can gouge the surface. Keep the lance moving and maintain a consistent distance to avoid stripes or "tiger marks". Work in overlapping passes along the length of the pavers rather than randomly across them. Consider a surface cleaner attachment for large areas such as driveways. It gives a more even finish and reduces splashback. Pre-treat organic growth with a suitable cleaning solution so you rely less on raw pressure.
Many professionals combine low-pressure application of treatments with rinsing, sometimes called soft washing. It is effective on moss and algae and is the same principle used for roof cleaning and house washing, where high pressure could damage tiles, paint or render. Whether you hear it called power washing or pressure washing, the best results come from matching the method to the material.
Dealing with Common Paver Stains
Different stains need different treatments:
Moss and algae: Treat with an appropriate biocide or cleaning solution, allow dwell time, then rinse. Oil and grease: Apply a degreaser or poultice as soon as possible. Old oil stains may only lighten rather than disappear completely. Rust: Use a rust remover designed for masonry. Avoid acid on certain pavers without testing first. Efflorescence: Often brushes off when dry, and persistent cases may need a specialist efflorescence cleaner. Leaf tannin stains: Usually respond to a cleaning solution and gentle scrubbing before rinsing.
Always test any product in a small, inconspicuous spot first. Natural stone and coloured pavers can react unpredictably to acidic or alkaline products.
Jointing Sand: Why It Matters and How to Replace It
Jointing sand does more than fill gaps. It stabilises the paving, helps spread loads between pavers, discourages weeds and limits water infiltration. After a thorough clean, some sand loss is normal, and it is the ideal time to re-sand.
Signs Your Pavers Need Re-Sanding Joints are visibly low, with gaps wider or deeper than a few millimetres Pavers feel loose or wobble underfoot Weeds and grass keep sprouting between pavers Ants are nesting in the joints Water is pooling or running into the joints rather than draining across the surface Choosing the Right Sand
Fine, dry, well-graded sand is the standard choice for traditional jointing. Polymeric sands, which contain binders that harden when activated with water, are popular for resisting weeds, ants and washout. They need careful installation, because residue left on the paver surface can leave a hazy film. Your supplier or paving professional can advise which suits your pavers and the gap width.
How to Re-Sand Pavers Let the pavers dry completely. Damp sand clumps and won't settle into the joints. Allow at least 24 to 48 hours after cleaning, longer in cool, shaded areas. Remove loose debris from the joints with a stiff brush or blower. Spread the sand generously across the surface and sweep it in different directions so it fills the joints completely. Compact if appropriate. Larger areas may be vibrated with a plate compactor fitted with a protective pad to settle the sand, then topped up again. Sweep off all excess before it gets wet. Polymeric sand in particular must be fully cleared from the surface before activation. Activate or settle as directed by the manufacturer, using a light mist rather than a heavy spray. Should You Seal Your Pavers?
Sealing is optional, but it can be a worthwhile step for many Bayside properties. A quality sealer helps protect against staining, slows the return of moss and algae, reduces moisture absorption and can enhance colour. It can also help lock in jointing sand when the product is designed to do so.
Types of Paver Sealers Penetrating (impregnating) sealers: Soak into the paver and leave a natural, matte appearance. They are a good option where slip resistance and a natural look are priorities. Film-forming sealers: Sit on the surface and often provide a "wet look" or satin sheen. They can offer strong stain protection but may be slippery when wet if the wrong product is used, and may need more upkeep.
For driveways, choose a product rated for vehicle traffic and hot tyre pickup. For pool surrounds and outdoor entertaining areas, slip resistance should be a priority, and some sealers include anti-slip additives.
Preparation Is Everything
Sealer performance depends heavily on preparation. Pavers must be:
Thoroughly cleaned, with all stains, moss and efflorescence treated Completely dry, which often means several days of dry weather Freshly re-sanded and swept clean, unless the product instructions say otherwise
Sealing over dirty or damp pavers can trap moisture and discolouration beneath the coating, causing cloudiness or peeling. Check the forecast and plan for mild, dry conditions, as Melbourne's rapid weather changes can ruin a sealing job mid-application. Always follow the manufacturer's directions on application rates, coats and curing time before allowing foot https://connerhvzx631.juniperbrief.com/posts/pressure-cleaning-rules-and-water-restrictions-in-victoria https://connerhvzx631.juniperbrief.com/posts/pressure-cleaning-rules-and-water-restrictions-in-victoria or vehicle traffic.
Aftercare Tips to Keep Pavers Looking Great
Good aftercare reduces how often you need heavy cleaning and protects your investment.
Sweep regularly to remove leaves and grit before they stain or break down. Wipe up spills quickly, especially oil, wine, fertiliser and battery residue. Check joints every six to twelve months and top up sand where needed. Trim overhanging vegetation to increase sunlight and airflow over shaded paving. Clean gutters and downpipes so overflow doesn't repeatedly stain or erode paved areas. Wash pavers periodically, with many Bayside homes benefiting from an annual clean and shaded areas sometimes needing more. Reseal on schedule. Most sealers need reapplication every few years depending on product, traffic and exposure. Take a Whole-Property Approach
Paving rarely gets dirty in isolation. Algae-streaked roofs, grimy walls and stained fascias often go hand in hand with tired-looking pavers. Combining roof cleaning, house washing and driveway cleaning in a single visit can be efficient, and cleaning from the top down prevents runoff from re-soiling surfaces you've already finished. It's also a smart step before selling, renting or hosting a big event.
DIY or Hire a Professional?
Light maintenance is manageable for many homeowners, but there are good reasons to bring in a professional pressure cleaning service:
Large driveways or multiple paved zones that are time-consuming to do evenly Delicate or natural stone pavers that can be damaged by incorrect pressure Stubborn stains, heavy efflorescence or long-neglected paving Sealing projects where preparation and application need to be precise Water management concerns, since wash water should be kept out of stormwater drains where possible
In Victoria, stormwater drains run to our creeks and Port Phillip Bay, so it matters where cleaning runoff goes. A responsible operator will manage wastewater and use cleaning products appropriately to protect the Bayside environment. Ask any provider about their methods, insurance and experience with your specific paver type.
Final Thoughts
Pavers can last for decades, and a little knowledge goes a long way. Clean them with the right pressure and technique, replace lost jointing sand once they're dry, consider a suitable sealer for added protection, and keep up with simple routine care. Whether your paving is a Brighton driveway, a Black Rock courtyard or a Cheltenham pool area, this approach will keep it safe, attractive and ready for everything Melbourne Bayside's climate throws at it in 2026 and beyond.

Bayside Pressure Cleaning Pros

Unit 3/3-5 Arnold St, Cheltenham VIC 3192

ph. (03) 4517 6380