Re-sanding an interlocking driveway or patio with fresh polymeric sand is almost never sold on its own in the GTA — it's bundled into a full maintenance visit (deep clean, complete re-sand of every joint, and reseal) that runs $1,500–$3,000 for a typical 700 sq ft driveway, or roughly $2–$4.30 per square foot, every 4–6 years. The sand itself is cheap; what you're paying for is the labour of doing it correctly. This guide covers what polymeric sand actually is, how it beats the plain sand some budget crews still use, exactly what the real GTA price breakdown looks like, and the mistakes that turn a straightforward maintenance job into a redo.
Quick answer — polymeric sand cost and cycle in the GTA
Polymeric sand is the binder-enhanced jointing sand that holds every modern interlocking installation together, and in the GTA it's maintained on a 4–6 year cycle alongside sealing. The real-world numbers from our own service pricing: a full re-sand-and-reseal visit runs $1,500–$3,000 for a typical 700 sq ft driveway, the first seal on a brand-new install is $0.80–$1.20 per sq ft (applied 60–90 days after the pavers go down, with fresh polymeric sand already in the joints), and the annual in-between inspection and wash is $200–$400 if you hire it out, free if you do it yourself.
What those numbers are protecting: a surface that costs $25–$55 per square foot to install in the first place, and the same amount to re-lay if neglected joints let water pump the base out from underneath. A maintenance visit is the cheapest square footage you will ever buy for that driveway.
What polymeric sand actually is
Polymeric sand looks like ordinary sand in the bag, but it isn't. Manufacturers blend graded silica sand with dry polymer binders — typically acrylic or a similar resin — that stay inert while the sand is dry and loose. Once the sand is swept into the paver joints, compacted to the right depth, and then watered according to the product's instructions, the polymers activate and cure into a semi-flexible, bonded fill. The joint stops being loose grit sitting in a gap and becomes a cohesive unit that moves slightly with the pavers instead of washing out from under them.
That bonded structure is what gives polymeric sand its three real advantages over anything else you could sweep into a joint: it resists washout from rain and pressure washing, it locks out most weed seeds and ant colonies that would otherwise root in loose sand, and it helps keep the paver field itself locked together, which matters more than most homeowners realize — the joints are doing real structural work, not just filling a gap for looks.
Polymeric sand vs regular sand vs no sand
Three options exist for filling paver joints, and only one of them belongs in a GTA installation built to last.
| Joint fill | Washout resistance | Weed resistance | Realistic lifespan | Our take |
|---|---|---|---|---|
| Polymeric sand | High — bonded by activated polymer binder | Strong while intact | 4–6 years before a full refresh | Standard on every installation and every re-sand we do |
| Regular (unbonded) jointing sand | Low — no binder, washes and blows out | Weak — loose sand is an easy seedbed | Often visibly thin within 1–2 seasons | Acceptable only on very low-traffic, low-exposure applications; never our recommendation for a driveway |
| No joint fill / bare joints | None — open channel straight to the base | None — the fastest route to weeds and settling | n/a — accelerates every other failure mode | Not a real option; open joints let water straight into the base |
The price gap between polymeric and regular sand at the material level is small. The performance gap is not — a joint that washes out in a season or two means weeds, ant colonies, and water intrusion into the base years ahead of schedule, which is exactly the chain of events behind most of the sunken and shifted sections we get called to repair. If a quote specifies plain jointing sand on a driveway, that's worth asking about directly.
Quick check: run a fingertip across a joint. If sand comes loose and crumbles away rather than holding firm, the polymeric binder has broken down and that section is due for a re-sand — regardless of how the surface otherwise looks.
Full cost breakdown — what you're really paying for
Here's the honest GTA pricing picture, pulled from our own service rates, for every stage a typical interlocking driveway or patio goes through.
| Stage | Typical cost | When |
|---|---|---|
| First seal coat (new install) | $0.80–$1.20 / sq ft | 60–90 days after installation, once efflorescence has released |
| Full re-sand-and-reseal visit | $1,500–$3,000 / ~700 sq ft | Every 4–6 years |
| Annual inspection and wash | DIY or $200–$400 | Once a year, ideally spring |
| Individual paver swaps | $400–$1,200 | Every 10–15 years, or as needed |
| Localized re-leveling | $400–$1,500 per area | As needed, if settling appears |
| Full section replacement | $25–$55 / sq ft installed | Only if neglect reaches structural failure |
Of that $1,500–$3,000 full-visit price, the polymeric sand itself is a small line item — a modest quantity of bagged material for a typical driveway. Most of the cost is labour: raking out whatever remains of the old, degraded sand so the new material can make full contact with clean joint walls, sweeping and compacting fresh sand into every joint at the correct depth, and watering it in on the right schedule so the binder cures properly instead of washing away before it sets. Skipping any one of those steps is why a from-scratch bag of polymeric sand from a hardware store doesn't guarantee a professional result.
Over a 10-year ownership window, two full visits plus DIY annual upkeep runs roughly $3,000–$6,000 total — a fraction of what re-laying a section costs once neglected joints let water undermine the base. Our interlock sealing and maintenance service bundles the deep clean, full polymeric re-sand, and reseal into a single dry-weather visit, which is how the $1,500–$3,000 range gets delivered in practice.
"Nobody calls us excited about re-sanding their driveway. They call us excited about not having to repave it in year nine instead of year thirty-five. That's genuinely the whole pitch."
— Reliable Hardscapes, on maintenance economicsHow often you actually need to re-sand
Polymeric sand degrades gradually rather than failing all at once, which is exactly why it's easy to let slide. Expect roughly 20–30% volume loss by year 3–4 and 30–50% by year 5–7 if the joints are never refreshed. That erosion comes from UV exposure breaking down the binder over time, repeated freeze-thaw cycling physically working the joint open, and — the biggest accelerant in this climate — road salt attacking the bonded sand every winter.
The practical range we work to across the GTA is 4–6 years for a full re-sand and reseal, and where a driveway lands in that window depends on real conditions, not a fixed calendar date:
- Closer to 4 years: heavy daily traffic, aggressive winter salting, narrow-joint large-format pavers, or a south-facing surface with heavy UV exposure.
- Closer to 6 years: a lightly used side patio or walkway, consistent sand-not-salt winter care, and gentle cleaning habits.
Visible weeds across large sections, sand you can rake out with a fingertip, or a joint that looks visibly lower than the paver surface next to it are all signs the cycle is due regardless of how many years have passed. Our interlock maintenance guide covers the full annual-to-decade schedule this fits into.
Grain size and joint width — getting the match right
Polymeric sand isn't a single product — manufacturers grade it by particle size, and matching that grade to the actual joint width on your pavers matters more than most quotes mention.
Fine-graded sand for narrow joints
Large-format pavers and tightly butted modern patterns often have joints around 1/8 inch wide. A fine-graded polymeric sand is formulated to actually settle into a gap that narrow; a standard or coarse grade will bridge over the top without fully filling it, leaving voids that never compact or bond properly.
Standard grade for typical residential joints
Most GTA driveways and patios use joints in the 3/16–1/4 inch range, which is what the common medium-grade polymeric products on the market are designed for. This is the default for the vast majority of residential installs.
Why the mismatch matters
A sand that's graded too coarse for the joint width leaves air pockets below the surface that the compaction pass can't close. Those pockets are where water collects, freezes, and starts breaking the joint apart years ahead of schedule — a slow failure that looks fine on day one and shows up as crumbling, hollow-sounding joints two or three winters later.
How a proper re-sand is done
The process matters as much as the product. A re-sand done out of sequence or rushed through the cure time rarely holds up as long as it should.
- Remove the old sand. Degraded polymeric sand is raked, brushed, or vacuumed out of the joint down to a clean, sound base — new sand bonding to old, failing sand doesn't cure properly.
- Deep clean the surface. A wash removes organic buildup, grime, and any residue that would otherwise get sealed under the new sand and sealer.
- Sweep in fresh polymeric sand. Dry sand is swept across the surface and worked into every joint, filling to the correct depth relative to the paver's chamfered edge.
- Compact. A plate compactor (for driveways) or hand tamping (for smaller or more delicate areas) settles the sand fully into the joint rather than leaving it loosely piled.
- Water it in. A controlled, even watering activates the polymer binder — too little and it won't cure fully; too much and it can wash the binder out before it sets. This step is where most DIY attempts go wrong.
- Cure, then seal. The sand needs its cure window before a sealer goes on top, which is why the full visit is scheduled around a dry-weather forecast rather than squeezed into a single afternoon.
Ontario-specific considerations
Freeze-thaw is the reason this cycle exists at all
The GTA sees roughly 40–60 freeze-thaw cycles every winter. Water that gets past a degraded joint and into the base freezes, expands about 9% in volume, and does mechanical damage with every cycle. The 4–6 year re-sand interval isn't an arbitrary marketing number — it's timed to stay ahead of how quickly this specific climate works a joint open.
No permit, but a real season
Re-sanding and resealing is maintenance, not construction — it doesn't require a permit from any GTA municipality the way a new driveway or a retaining wall might. What it does require is weather: the sand needs a dry window to compact and water in correctly, and the sealer that typically follows needs above-freezing cure temperatures. In practice that means booking the work roughly May through early October, with spring the natural choice since it follows winter's verdict on which joints actually need attention.
Salt is the single biggest accelerant
Standard rock salt (sodium chloride) breaks down polymeric sand faster than almost anything else homeowners do to their own driveway, on top of causing surface efflorescence and spalling on the pavers themselves. Switching to plain sand for traction, or a gentler de-icer like calcium magnesium acetate or a calcium chloride blend when melting is genuinely needed, is one of the cheapest ways to push a re-sand cycle from the 4-year end of the range toward the 6-year end. Our guide to winter-ready pavers covers the salt-and-sand relationship in more depth.
Mistakes that waste a re-sand job
Mistake 1: Sweeping new sand over old sand
Fresh polymeric sand needs to contact clean joint walls and compact to full depth to bond and cure properly. Layering it over whatever's left of the old, degraded sand is the single most common reason a DIY re-sand fails within a season.
Mistake 2: Watering it in wrong
Too little water and the binder never fully activates; too much, applied too fast, and it washes the polymer out of the sand before it has a chance to cure. The product label's watering instructions exist for a reason — this is the step that separates a re-sand that lasts six years from one that's failing again in one.
Mistake 3: Using the wrong grain size for the joint
Covered above, but worth repeating: a coarse sand in a narrow joint leaves voids that never compact, which shows up as premature joint failure regardless of how carefully everything else was done.
Mistake 4: Pressure washing too aggressively afterward
A narrow "turbo" nozzle held close to the surface at high PSI can blast fresh or even cured polymeric sand straight back out of the joint. Routine cleaning should stick to a wide fan tip at moderate pressure.
Mistake 5: Sealing before the joints are actually full
Sealer over half-empty joints locks in the vulnerability it was supposed to fix. The re-sand isn't an upsell tacked onto a sealing job — on a surface that's lost significant joint sand, it's the point of the visit.
Mistake 6: Ignoring the first signs
A weed or two between pavers, or sand you can rake out with a fingertip, is the surface telling you a section is due. Left alone through another winter or two, an isolated spot becomes a section-wide problem that costs significantly more to fix.
DIY vs hiring it out
Re-sanding a small patio or walkway is genuinely within reach for a reasonably handy homeowner with a weekend, a stiff broom, a hand tamper, and patience for the watering step. A full driveway is a different calculation — the surface area, the plate compaction equipment, and the need to get the whole job done within one dry-weather window make it a job most homeowners hire out rather than attempt themselves.
Comfortably DIY: spot-topping a small, isolated area of thin joint sand; the annual inspection and gentle wash; switching your winter de-icer from rock salt to sand.
Usually worth hiring out: a full driveway re-sand, anything paired with a reseal (the timing and product compatibility matter), and any joint that's failing alongside visible paver settling — that's a base issue a fresh bag of sand won't fix. See our interlocking repair page if settling or shifting is part of what you're seeing.
FAQs on polymeric sand
What's the difference between polymeric sand and regular sand?
Regular jointing sand (sometimes called masonry sand or play sand) is loose silica sand with no binder — it fills the joint but washes out with rain, pressure washing, and winter freeze-thaw within one to two seasons. Polymeric sand is a blended sand with polymer binders mixed in; once it's swept into the joint and watered, the polymers activate and harden into a flexible, bonded fill that locks the joint shut, resists washout, and suppresses weeds and ants for years instead of months. Every interlocking driveway or patio installed in the GTA today should be using polymeric, not regular, jointing sand.
How much does it cost to re-sand an interlocking driveway in the GTA?
Re-sanding is almost always sold as part of a full maintenance visit — deep clean, complete polymeric re-sand of every joint, and reseal — which runs $1,500–$3,000 for a typical 700 sq ft driveway, or roughly $2–$4.30 per square foot. The polymeric sand itself is a small fraction of that total; most of the cost is labour — removing what's left of the old sand, sweeping and compacting the new sand into every joint correctly, and watering it in on the right schedule. Annual inspection and a gentle wash between full visits runs $200–$400 if you hire it out, or free if you DIY it.
How often do I need to re-sand my interlocking pavers?
Every 4–6 years for a typical GTA driveway or patio, the same cycle as resealing — the two are usually done together. Polymeric sand erodes gradually: expect roughly 20–30% volume loss by year 3–4 and 30–50% by year 5–7 if it's never refreshed. High-traffic driveways that get heavily salted in winter tend to need the re-sand on the shorter end of that window; a lightly used patio can sometimes stretch past 6 years.
Can I just add more sand on top instead of re-sanding properly?
No — this is one of the most common DIY mistakes we see. Sweeping fresh polymeric sand over old, degraded sand that's still sitting in the joint doesn't bond properly, because the new sand needs to make full contact with the joint walls and compact to the correct depth to activate its binder. The old material has to come out first, usually with a joint raker or a narrow vacuum attachment, before fresh sand goes in. Skipping that step is why some DIY re-sand jobs fail within a single season.
Does polymeric sand stop weeds between pavers?
Mostly, yes — a properly installed, intact polymeric sand joint is dense and bonded enough that weed seeds can't root in it, which is one of its real advantages over regular sand. But polymeric sand isn't a permanent weed barrier. Once a joint has eroded or cracked, seeds find the opening, and weeds growing between pavers are usually the first visible sign that a section is overdue for its re-sand cycle rather than a problem you can spot-treat forever with herbicide.
Can I pressure wash pavers without blasting out the polymeric sand?
Yes, if you use the right technique. A wide fan-tip nozzle at moderate PSI held a reasonable distance from the surface is safe for routine cleaning and won't meaningfully disturb cured polymeric sand. The damage happens with narrow "turbo" nozzles at close range and high pressure aimed directly down into the joints — that combination can strip sand out in minutes that took a full application to install. If your joints already look thin, clean gently and plan the re-sand sooner rather than later.
What sand grain size should I use for narrow paver joints?
Manufacturers sell polymeric sand in different grain gradations, and matching the grain size to the joint width matters more than most homeowners realize. Narrow joints (roughly 1/8 inch, common on tightly butted large-format pavers) need a fine-graded polymeric sand that can actually settle into the gap; standard joints (3/16–1/4 inch, typical on most residential driveways and patios) use the more common medium-grade product. Using a coarse sand meant for wide joints in a narrow one leaves voids that never compact properly, which is a common cause of early joint failure.
Is it worth switching from rock salt to sand for winter traction?
Yes. Rock salt (sodium chloride) accelerates the breakdown of polymeric sand joints and causes surface efflorescence and freeze-thaw spalling on the pavers themselves, so using it every winter effectively shortens your re-sand cycle. Plain sand for traction, or a gentler de-icer like calcium magnesium acetate or a calcium chloride blend when melting is genuinely needed, protects both the joints and the paver surface and is one of the cheapest things a homeowner can do to stretch the 4–6 year re-sand interval closer to 6 than 4.