How much does it cost to seal a paver patio in Ottawa?

Sealing a paver patio in Ottawa typically costs $1.50 to $3.50 per square foot when done professionally, meaning a standard 300-square-foot patio runs between $450 and $1,050. The wide range depends on the type of sealer, the condition of your pavers, and whether joint stabilization is included.

What Drives Sealing Costs in Ottawa

The sealer itself is the biggest variable. A basic acrylic sealer costs less to apply and gives pavers a subtle sheen while offering moderate protection against Ottawa's freeze-thaw cycles. A premium polymeric or polyurethane-based sealer costs more but provides superior protection against water penetration, efflorescence, and the damaging effects of de-icing salt — a real concern when Ottawa sees 220-plus centimetres of snowfall each winter. High-performance sealers with joint-stabilizing properties that harden the polymeric sand between pavers typically push costs toward the upper end of the range.

Before sealing, the patio needs thorough preparation. Professional crews will pressure-wash the surface, remove any weeds or moss growing between joints, and re-sand joints with fresh polymeric sand if needed. This prep work is often included in the quoted price, but on older patios with significant weed growth, settled joints, or efflorescence staining, expect an additional $200 to $500 for deep cleaning and sand replacement. If individual pavers have shifted due to Ottawa's frost heave, relevelling those sections before sealing adds further cost.

DIY sealing is possible and reduces the expense to roughly $0.50 to $1.25 per square foot for materials alone. A five-gallon pail of quality paver sealer covers approximately 200 to 400 square feet depending on paver porosity and costs $80 to $180. You'll also need polymeric sand ($25 to $40 per bag), a pressure washer rental ($75 to $120 per day), and a sprayer or roller for application. The total DIY cost for a 300-square-foot patio lands around $200 to $400. The catch is that improper application — too thick, applied in direct sun, or on damp pavers — creates a hazy, blotchy finish that's difficult to fix.

Timing matters in Ottawa. Sealer needs 48 hours of dry weather above 10°C for proper curing, which limits the window to roughly May through September. Late spring is ideal because it protects pavers before summer UV exposure and ahead of the following winter. Most professionals recommend resealing every three to five years in Ottawa's climate, though high-traffic areas or patios exposed to heavy salt use may need attention sooner.

A properly sealed patio resists staining, reduces weed growth between joints, and maintains colour vibrancy despite Ottawa's harsh UV and winter conditions. If your paver patio is looking faded or joints are washing out, Ottawa Patios can assess the condition and recommend the right sealing approach for your specific installation.

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Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Justyn Rook Contracting
• RenoMotion Inc.
• Brazeau Service
• Alain Renovations
• Rrenovatios

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