Concrete Sealing Guide: How Often Should You Reseal?

Sealing is one of the most cost-effective things you can do to protect concrete — and one of the most overlooked. A good sealer keeps stains out, slows down wear, and keeps a driveway or patio looking fresh for years longer than bare concrete. But sealers are not “set and forget,” especially in a coastal climate like ours, where salt air and brutal UV wear them down faster.

This guide covers whether you need to seal at all, how often to reseal on the Fraser Coast, the main sealer types and what they do, and the simple maintenance that keeps your concrete in good shape. Pricing here is indicative only — a written quote based on your actual area and finish is the only accurate figure.

Do you actually need to seal concrete?

Concrete is porous. Left bare, it soaks up water, oil, grease and dirt, which leads to staining, surface wear and — over time — moisture-related deterioration. Sealing fills and coats those pores so the surface resists all of that.

You do not strictly have to seal plain concrete, but sealing is strongly worth it if you want to:

• Keep stains out — oil drips, tyre marks, BBQ spills and leaf tannins
• Resist moisture — important in our humid, high-rainfall climate
• Reduce surface wear and dusting
• Make cleaning easier — sealed concrete hoses down far more readily
• Protect the look of decorative finishes

For decorative and exposed surfaces, sealing is close to essential. Exposed aggregate, coloured concrete and polished concrete all look better and last longer sealed, and the sealer is part of what gives them their finish.

How often to reseal in coastal QLD

Here is the part that surprises a lot of Hervey Bay and Maryborough homeowners: sealers do not last as long here as they do inland. Our environment is hard on them.

As a general guide for the Fraser Coast:

Surface	Typical reseal interval (coastal QLD)
Plain concrete driveway	Every 2–3 years
Exposed aggregate	Every 2–3 years
Coloured / decorative concrete	Every 2–3 years
High-traffic or poolside areas	Often closer to every 2 years
Covered patios (less exposure)	Can stretch a little longer

The reasons our coast is tough on sealers:

• Salt air is corrosive and accelerates sealer breakdown.
• Intense UV degrades many sealers and can fade decorative colour if unprotected.
• High humidity and rainfall keep surfaces damp and promote mould and algae.
• Heat speeds up the ageing of the coating.

The honest rule is to watch the surface, not just the calendar. If water no longer beads on it, if the colour looks dull, or if it is staining more easily than it used to, it is time to reseal regardless of how long it has been.

Signs it’s time to reseal

• Water soaks in instead of beading on top
• The surface looks faded, dull or patchy
• New stains appear and are harder to remove
• Exposed aggregate looks “dry” and loses its sheen
• Increased dusting or wear in traffic areas

Resealing before the old sealer fully fails is much easier and cheaper than waiting until the concrete is stained and weathered.

Sealer types explained

Not all sealers are the same. The right one depends on your surface, the look you want and how much traffic it sees. Here are the main categories in plain terms.

Penetrating sealers

These soak into the concrete and protect from within without changing the appearance much. They leave a natural, matte look and are breathable, which suits our humid climate. Good for driveways where you want protection without a glossy finish.

Acrylic sealers

A popular all-rounder. Acrylics form a thin film on the surface and can be supplied in matte through to high-gloss finishes. They enhance colour — great for exposed aggregate and coloured concrete — and are relatively easy to recoat. They are also the type that typically needs resealing every couple of years in our climate.

Polyurethane and epoxy sealers

Tougher, harder-wearing coatings often used in high-traffic or industrial settings, and for some decorative floors. They last longer but are less forgiving to apply and recoat, so they are usually a specialist job.

”Wet look” vs natural finish

Many sealers come in different sheen levels. A high-gloss “wet look” makes decorative finishes pop but shows wear and can be slippery when wet — worth considering near pools. A matte or natural finish is more forgiving underfoot. The right choice is partly aesthetic and partly practical.

When to seal new concrete

New concrete should be fully cured before its first seal — typically after the 28-day cure. Sealing too early can trap moisture and cause problems. If you have just had concrete poured, see our guide on how long before you can drive on new concrete for the curing timeline; the first seal comes after that.

Maintenance between reseals

Good day-to-day care extends the life of any sealer:

• Hose down regularly to keep grit and salt off the surface.
• Clean up oil and spills promptly before they penetrate.
• Keep mould and algae in check — our humidity loves shaded, damp concrete. A gentle clean stops it taking hold.
• Avoid harsh chemicals that can strip sealer.
• Be careful with pressure washing — too much pressure can damage both the sealer and decorative surfaces. For exposed aggregate specifically, see our guide on how to clean exposed aggregate concrete.

Indicative cost

Resealing is far cheaper than replacing concrete, which is the whole point of doing it. The cost depends on the area, the surface type, how much prep and cleaning is needed, and the sealer chosen. As a guide, resealing is a modest cost compared with the value it protects — but the only accurate figure is a written quote based on your actual area and condition.

Think of it this way: a reseal every few years costs a fraction of what it would take to repair or replace a stained, weathered driveway. It is maintenance that pays for itself.

Common questions

Can I reseal it myself? Some homeowners do, with off-the-shelf products. The catch is preparation — the surface has to be clean, dry and properly prepped, and the right sealer chosen for the surface and climate. Poor prep is the main reason DIY seals fail early. For decorative finishes especially, it is often worth having it done professionally.

Does sealing make concrete slippery? Glossy film-forming sealers can be slippery when wet. Around pools and in wet areas, a matte finish or an anti-slip additive is the safer choice. Tell your concreter where the surface is so they recommend the right product.

My driveway has never been sealed — is it too late? Not at all. As long as the concrete is sound, it can be cleaned and sealed to protect it from here on. The sooner the better.

How long after sealing can I use the surface? It varies by product, but you generally need to keep off it for a period while it dries and cures. Your concreter will tell you the wait time for the sealer used.

The cost of not sealing

It helps to think about what happens to bare, unsealed concrete over time in our environment — because that is what you are protecting against.

Unsealed concrete soaks up everything that lands on it. Oil drips from the car penetrate deep and become permanent dark patches. Leaf tannins leave brown staining. Salt from our coastal air works into the surface. Mould and algae take hold in the porous texture, especially in shaded, damp spots. Over the years the surface dusts, wears and looks progressively tired, and there is no easy way to reverse staining that has soaked right in.

Once a surface gets to that point, your options are limited and expensive: aggressive cleaning that may not fully work, resurfacing, or replacement. Compared with that, a reseal every couple of years is a tiny, predictable cost that keeps the surface protected and easy to clean. Sealing is genuinely one of the best-value things you can do for concrete on the Fraser Coast.

Build sealing into your maintenance routine

The homeowners who get the most out of their concrete treat sealing as part of normal upkeep rather than an emergency response. A simple rhythm works well:

• Regularly: sweep and hose down to keep grit, salt and leaves off the surface.
• As needed: clean up spills and treat any mould before it spreads.
• Every couple of years: assess the surface and reseal when water stops beading or the finish dulls.
• Whenever you notice change: if staining gets easier or the colour looks flat, don’t wait — it is telling you the sealer is worn.

Keeping a loose note of when the surface was last sealed makes this easy. With that simple routine, your driveway, patio or decorative finish stays looking close to new for far longer than bare concrete ever could — and you avoid the big, expensive jobs down the track.

Protect your concrete with local know-how

Sealing is the cheapest insurance you can buy for your concrete — but on the Fraser Coast it only works if it is done with the right product, at the right interval, by someone who understands what salt air and UV do to a surface.

We handle concrete sealing across Hervey Bay, Maryborough, Rainbow Beach and Tin Can Bay, from plain driveways to decorative finishes. If your concrete is due for a reseal — or you are not sure when it was last done — get in touch for a written quote and we will assess the surface and recommend the right approach.