What Affects the Cost of Concrete Sealing in Southwestern Ontario

Homeowners across Southwestern Ontario asking about concrete sealing cost are usually hoping for a simple number, something like a flat rate per square foot that applies everywhere. In practice, sealing cost depends on enough property-specific variables that a single number would be misleading more often than it would be helpful. All-Seal Concrete Sealing prices every job after a free on-site inspection rather than from a fixed price list, because the same square footage can mean very different amounts of work depending on the surface, its condition and the finish a homeowner wants. Understanding what actually goes into that quote makes the process far less mysterious, even without a specific dollar figure attached.

Surface area is the starting point, not the whole story

Total square footage is the most obvious factor and the one most homeowners think of first. A two-car driveway naturally involves more material and labour than a small walkway, and a large pool deck surrounding an in-ground pool covers more ground than a modest front step. But area alone does not determine cost, because two surfaces of identical size can require very different amounts of prep work, repair and application time depending on everything else covered below. Area sets the baseline; the rest of the factors adjust it up or down from there.

Condition of the existing concrete

Every sealing job at All-Seal starts with thorough cleaning through pressure washing, followed by crack and joint repair where needed, then full drying before any sealer goes down. A driveway with minor surface dirt and no cracking takes far less prep time than one with years of oil stains, efflorescence, or a network of hairline cracks that need to be addressed before sealing. Crack and joint repair in particular can range from a quick fill on a couple of small cracks to a more involved repair across a surface that has seen years of freeze-thaw cycling without any protective coating. Since Southwestern Ontario winters are hard on unsealed or poorly maintained concrete, older surfaces that have never been sealed often need more prep than a driveway that has been maintained on a regular sealing cycle.

Whether the surface has been sealed before

Concrete that has never been sealed is generally the most straightforward to quote, since there is no existing coating to evaluate. Previously sealed surfaces require an extra step: assessing whether the old coating is still sound or whether it is failing, which shows up as peeling, whitening, or uneven wear. A sound existing coating can often be cleaned and resealed directly on top. A failing coating typically needs to be stripped first so the new sealer bonds properly and looks even, and that stripping step adds labour that a first-time sealing job does not require. This is one of the more common reasons two seemingly similar driveways end up with different quotes.

Surface type: plain, decorative or stamped

Not all concrete takes the same amount of work to seal well. A plain grey driveway or garage floor is typically the most efficient surface to cover, since the goal is even, functional protection without pattern or colour considerations. Decorative concrete, meaning coloured, stained or exposed aggregate surfaces, and stamped concrete both generally require more attention to ensure the sealer brings out colour and pattern evenly without pooling in grooves or leaving uneven sheen across raised and recessed areas. This additional care is part of why stamped and decorative sealing tends to reflect more labour in a quote than a comparably sized plain driveway. Service-specific detail is available at /services/stamped-concrete-sealing and /services/decorative-concrete-sealing.

Sealer type and sheen

All-Seal applies premium acrylic and polyurethane sealers, along with penetrating sealers where appropriate for the surface and exposure conditions. The choice between these products depends on the concrete type, traffic level and how much protection against water, salt and UV a particular surface needs, and different products carry different material costs. Sheen, whether high gloss, semi-gloss or matte, does not change the level of protection, but it can factor into application technique, particularly on decorative and stamped surfaces where achieving even sheen across a patterned surface takes more care than a flat matte finish on a plain driveway. Our companion guide on choosing a sheen at /resources covers this decision in more depth.

• Total surface area of the driveway, patio, garage floor, pool deck or walkway
• Current condition, including cracking, staining and how much pressure washing and repair is needed
• Whether the surface has been sealed before and whether an old coating needs stripping
• Surface type, since decorative and stamped concrete generally take more labour than plain concrete
• Sealer product and sheen chosen for the job
• Whether an anti-slip additive is requested, which is standard around pools and on steps
• Access and site conditions that affect equipment setup and cleanup

Anti-slip additive and specialty requests

An anti-slip additive can be added to any sheen and is standard practice around pool decks and on concrete steps, where safety underfoot matters more than on a flat driveway. Adding this option is a straightforward adjustment to a quote rather than a major cost driver, but it is worth mentioning up front during the free inspection so it is factored into the plan from the start rather than added as a change partway through the job. Pool deck specifics are covered at /services/pool-deck-sealing.

Access, layout and site conditions

Two driveways of the same square footage are not always equally easy to work on. A property with tight side-yard access, extensive landscaping close to the concrete edges, or multiple separate surfaces to seal on the same visit, such as a driveway and a connected walkway, can take more time to set up, protect surrounding areas, and clean up around than a wide-open, single-surface job. These site conditions are part of why an on-site inspection produces a more accurate quote than an estimate based on square footage alone.

Why All-Seal quotes per property rather than per square foot

Given how many of the factors above interact with each other, a flat per-square-foot rate would either overcharge straightforward jobs or undercharge complex ones. All-Seal instead provides free quotes after a free on-site inspection, which lets a technician actually look at the concrete's condition, measure the real surface area, note any cracking or previous sealing, and talk through sheen and additive preferences with the homeowner before putting together a number. This approach takes a little more time upfront than reading a price list, but it produces a quote that reflects the actual job rather than a rough average across very different types of properties.

What this means for planning ahead

Homeowners across Woodstock, St. Thomas, Brantford, Hamilton, Kitchener-Waterloo and Cambridge planning to seal a driveway, patio, garage floor, pool deck or walkway can reasonably expect that condition and surface type will matter as much as size when a quote comes back. A well-maintained, previously sealed plain driveway is likely to be a more efficient job than a large stamped patio being sealed for the first time in years, even if the square footage is similar. Rather than guessing, the most useful step is booking a free inspection so All-Seal can walk the specific surface, note what prep work is needed, and provide a clear quote based on the actual property. You can request one through /contact or by calling 519-266-6796, and with more than 10 years of experience and a track record that includes 37 driveways, 56 patios and 96 happy customers, All-Seal has the context to price a wide range of property types accurately from the first visit.