Paving Maintenance: How to Keep Your Cape Town Driveway Looking New

Cape Town paving needs four things every year to keep its look and stretch its life by a decade: a polymeric joint sand top-up in early autumn, a low-pressure wash after the Southeaster season ends, a re-seal every three years on concrete cobble or red brick, and immediate attention to oil drips. Total cost on a typical 50m² Constantia or Pinelands driveway: under R900 per year and one Saturday morning. Skip it and you'll be paying R8 000+ for a partial relay inside a decade.

Why maintenance matters more in Cape Town

Three Peninsula-specific hazards make a no-maintenance approach especially costly here. Southeaster gales sand-blast joint sand out of open joints six months a year. Salt-laden Atlantic and False Bay air scales concrete paver surfaces if a sealer isn't refreshed. And winter rain washes anything loose into the stormwater system — including the joint sand that holds your whole field together [1].

The good news: every one of these is DIY-defeatable in an hour or two. None of it requires hired equipment, none of it requires calling a contractor out, and the total annual spend is less than one good restaurant dinner.

The annual checklist

Every 1–2 weeks: sweep and spot-check

A 30-second sweep with a stiff yard broom keeps fynbos pollen, oak leaves and Southeaster grit from settling into open joints. While you're at it, look for fresh oil or hydraulic-fluid drips — cars, mowers, jet skis, bakkie diff oil — and clean immediately (see oil section below). A drip that's two hours old comes off with paper towel; a drip that's two weeks old is permanent on standard concrete cobble.

Early autumn (March/April): joint sand top-up

March is the right time because the joint sand goes in dry, the autumn rain compacts it, and it's set before the winter washouts. Method:

1. Sweep the driveway clean. No leaves or debris in the joints.
2. Tip a 20kg bag of polymeric or kiln-dried silica sand across the field.
3. Sweep diagonally to the bond pattern with a soft broom — this forces sand into the joints without scratching the paver face.
4. Repeat the sweep three times until joints are filled to 2–3mm below paver top.
5. Mist with a garden sprinkler on the lightest setting for polymeric sand to activate the binder. Silica sand needs no activation.
6. Don't drive on the field for 24 hours after polymeric activation.

Cost: R280–R380 per 20kg bag (covers 35–50m² as a top-up). Available from any Builders Warehouse or local paving merchant.

After Southeaster season (November): low-pressure wash

The wind drops, the summer holiday traffic builds, and you want the driveway looking fresh. Use a domestic high-pressure washer on its lowest setting (under 80 bar) with a fan tip held at 45° and 30cm from the surface. Never use the pencil-jet tip — it strips joint sand and pits the paver face. Work in strips from the high point to the low point.

Pull out any weeds that came through (a flat-blade weed knife works fastest), then top up joint sand in any patch that got blown clean. Total time: 2–3 hours for a typical driveway.

Every 3 years: re-seal concrete or red brick cobble

Sealing is the single biggest lifespan extender on charcoal cobble and red clay brick — it cuts UV fade by half, keeps oil drips surface-bound, and binds the top of the joint sand. Two product families work in Cape Town:

• Penetrating sealer — soaks into the paver, no film on the surface, doesn't change the look. Best for matt-finish or rustic pavers. R8–R14/m² for product. Examples: Wespro Pene-Seal, Tylon Penetrating Sealer.
• Acrylic sealer (wet-look or matt) — sits on the surface, deepens colour, slightly increases slip risk when wet. Best for charcoal cobble where you want a richer look. R12–R20/m² for product. Examples: a.b.e. Permaseal, Tylon Acrylic Sealer.

Apply with a paint roller on a long handle. Two thin coats beat one thick coat. Avoid sealing in direct midday sun — early morning or late afternoon gives a better finish. Don't drive on the field for 24 hours.

Every 5–8 years: tree root pruning

Oak, milkwood, pine and rubber trees within 4m of a paved area will eventually lift sections. A licensed arborist can root-prune the trunk-side of the driveway and install a root barrier for R1 800–R6 500 per tree depending on size. Cheaper than the relay if you wait.

Stain removal: a quick reference

What NOT to do

• Don't use the high-pressure pencil tip. It blasts joint sand out and pits paver faces. Always a fan tip on the lowest setting.
• Don't use glyphosate (Roundup) as a routine weed control. It works but kills the joint sand binder if you use polymeric. Manual pulling plus annual sand top-up is better.
• Don't seal in direct sun. The sealer cures before it penetrates, leaving a milky film.
• Don't seal new pavers for the first 28 days. Concrete cobble needs to off-gas during the cement curing process.
• Don't use a wire brush on the paver face. Steel bristles leave rust deposits that bloom orange after the first rain.
• Don't ignore a single sunken paver. Water gets in under it, the failure spreads sideways under the bedding sand, and one sunken paver becomes ten across a winter.

When to call in a contractor instead

• Multiple pavers cracked or broken — replacement units need colour-matching from the original batch range, which a good local contractor can usually track down in your area.
• Whole bay sinking, especially near drains, gates or kerbs — the sub-base has failed, not the surface.
• Joint sand has washed out repeatedly over 2+ years — drainage isn't right and needs engineering.
• Tree-root heave above 15mm — full paving repair with root barrier required.

Common Questions

How often should I seal my paving?

Every 3 years for concrete cobble in direct Cape Town sun. Every 4–5 years for clay brick or shaded driveways. Granite and natural stone usually need only a one-coat consolidant every 8–10 years.

What's the best way to remove weeds from paving joints?

Manual pulling with a weed knife, then top up joints with polymeric sand. The polymeric binder resists new germination for 5–8 years. Avoid glyphosate as a routine measure — it works but degrades the joint binder.

Can I high-pressure wash my paving?

Yes, on the lowest setting with a fan tip at 45° and 30cm from the surface. Never the pencil tip — it strips joint sand and pits the face. Plan to top up joint sand afterwards.

How do I get oil stains out of paving?

How do I get oil stains out of paving?

Fresh drips: cat litter absorbent, then sunlight dishwashing liquid in warm water with a stiff brush. Old stains: cat-litter-and-acetone poultice overnight, then degrease. Stubborn old stains on concrete cobble are often permanent — the affected pavers can be swapped out individually.

What sand goes between paving bricks?

Polymeric sand or kiln-dried silica sand — not builder's sand. Polymeric binds chemically when wet and resists weeds and washout for 5–8 years. Silica is cheaper but washes out faster.

How much does paving maintenance cost per year?

Under R900 per year for a typical 50m² Cape Town driveway, all DIY. About R280 for joint sand, R150–R200 for sealer (every 3 years, amortised), and R100–R200 for cleaning supplies and the occasional spare paver.

If your driveway is past the point of DIY maintenance, we'll match you with vetted contractors who do a free condition assessment. Get 3 free quotes to compare.