Paver Driveways: Why They Need Different Treatment

Paver driveways have become a signature look for a lot of the newer custom builds in Fulshear, Cane Island, and Creekside Ranch. They look beautiful when they are new, and they add real curb appeal compared to a standard broom-finish concrete slab. But they are also more complicated to maintain than concrete, and the wrong cleaning approach can cause damage that is expensive to fix. We get regular calls from Katy homeowners who rented a pressure washer, blasted their paver driveway, and ended up with a stripe pattern where the jointing sand got washed out between the pavers. That is the specific mistake this post is going to help you avoid.

Here is what makes paver driveways different, why they stain more than concrete, and the right process for cleaning them.

What Makes a Paver Driveway Different

A concrete driveway is a single continuous slab. Water, dirt, and stains have nowhere to hide, and a pressure washer can scrub it from any angle without causing structural damage. A paver driveway is dozens or hundreds of individual stones set in place with jointing sand between them. The sand is what keeps the pavers locked together, and the gaps between pavers are where everything interesting happens.

The three key differences:

• Jointing sand. The fine sand between pavers is essential to the structural integrity of the driveway. If the sand washes out, the pavers can shift, sink, or develop a wobble. Once that starts, re-leveling is expensive.
• More porous surface. Most pavers are cast concrete with a slightly more porous surface than a power-troweled slab. They absorb staining more quickly.
• Organic growth in the joints. The jointing sand is a perfect growing medium for weeds, moss, and algae. Katy's humidity accelerates this, and you can get visible green growth in the joints within a year of installation.

That combination means paver driveways need cleaning more often than concrete driveways, but also need a gentler approach.

What a Consumer Pressure Washer Does to Pavers

A 2,500 to 3,000 PSI consumer pressure washer, aimed directly at the joints, will blast the jointing sand out. We have seen driveways where every single joint is empty for the first quarter inch of depth. The pavers are still in place, but they are held in only by their own weight and by the friction of the sand below the surface.

Two things happen after that. First, as cars drive over the driveway, the pavers start to shift. Small movements turn into larger movements. Within a year, you can have sunken spots, visible tilting, and pavers that wobble when you step on them. Second, rainwater that used to drain off the top of the driveway now drains into the joints and down into the base, which can erode the base material and accelerate the shifting.

Re-sanding a paver driveway is not expensive if the pavers are still level (usually $2 to $4 per square foot for polymeric sand installation). Re-leveling a paver driveway that has already shifted is much more expensive, often 3 to 5 times that. The whole point of the gentler cleaning process is to prevent ever needing the re-leveling.

The Right Way to Clean Paver Driveways

Our process for paver driveways has four steps, and each one matters:

Step 1: Weed and moss removal. Before any water touches the pavers, we remove any visible weeds, moss, or plant material growing in the joints. This is done by hand and with a joint-cleaning tool. If we skip this step, the pressure washing just blasts the plant material around and the water drives the roots deeper.

Step 2: Chemical pre-treatment. We apply a biodegradable paver cleaner (different from the cleaner we use on concrete) that kills algae and organic growth without damaging the pavers or the jointing sand. It dwells for 10 minutes.

Step 3: Low-pressure surface cleaner pass. We use a 20-inch surface cleaner at 2,000 to 2,200 PSI (not 3,000), with flat-angled nozzles that apply pressure parallel to the paver surface rather than driving water straight down into the joints. The surface cleaner distributes pressure evenly and keeps us from accidentally blasting one joint with too much force.

Step 4: Rinse and re-sand. After cleaning, we rinse the whole driveway and let it dry. Then we re-sand the joints with polymeric sand (sand that hardens slightly when wet, which locks the pavers together). This is important because even a gentle cleaning will disturb some sand, and replacing it is how we leave the driveway structurally sound. Re-sanding usually takes an extra hour and adds $75 to $150 to the cost, but it is absolutely worth it.

Cleaning a paver driveway without re-sanding is like mopping a floor and then dumping a bucket of dirt back on it. The re-sanding is not optional, it is half the job. — Our operations lead, after the third re-level customer of the month

Common Stains on Katy Paver Driveways

Beyond general dirt and algae, Katy paver driveways tend to collect a specific set of stains:

Oil and transmission fluid drips. Common on any driveway, worse on pavers because the porous surface absorbs deeper. Treated with a degreasing solution and dwell time.

Red clay from construction. Fulshear and Cane Island are still under active construction in places. Red clay tracks in and stains pavers much more visibly than concrete because of the porous surface. Treated with the iron remover we use on concrete, but with a gentler rinse.

Efflorescence. A white powdery haze that appears on the paver surface, usually in the first year after installation. It is mineral salts migrating out of the paver as it cures. Not dirt. It requires a specific efflorescence remover, not a general-purpose cleaner.

Rust stains. Usually from patio furniture legs, decorative planters, or iron fertilizer runoff. Treated with oxalic acid at low dilution.

Fire pit staining. Soot and ash from portable fire pits sitting on the pavers. Treated with an alkaline degreaser.

When to Seal Paver Driveways

This is a question we get on almost every paver job. The short answer: yes, seal them, but only after a good cleaning and only with the right sealer. A penetrating acrylic sealer (not a glossy topical sealer) applied every 3 to 5 years does three things: it locks in the jointing sand, it makes future stain removal dramatically easier, and it slightly enhances the paver color without looking fake.

The wrong sealer is a glossy topical that forms a film on the surface. These look shiny when new but they eventually flake and peel, and they can trap moisture in the pavers. In Katy's climate, topical sealers rarely last more than a year or two before starting to fail.

Sealing adds another $1 to $2 per square foot on top of cleaning. For a 600 square foot driveway, that is $600 to $1,200 for the full cleaning and sealing, and it extends the time between cleanings from yearly to every 2 to 3 years.

What It Costs in Katy

A typical paver driveway cleaning for a Katy, Fulshear, or Cane Island home (around 500 to 800 square feet) runs $300 to $550 depending on size, stain severity, and whether re-sanding is included. A full cleaning plus polymeric sand re-sanding plus sealer application runs $750 to $1,400. Both numbers can go up for larger driveways or for pavers with unusual patterns that take longer to clean properly.

Schedule Your Paver Cleaning

If you have a paver driveway in Katy and it has not been properly cleaned in more than a year, it is probably time. Send photos with your free quote request, tell us the approximate square footage, and we will give you a specific price. Or call us at (281) 555-0147.