How do I safely remove snow from my interlock driveway in Ottawa without wrecking the pavers or sand?

Question

Ottawa Driveways · Accepted Answer

Interlock driveways are beautiful and durable, but they require a different snow removal approach than asphalt or concrete. Using the wrong method can displace pavers, strip polymeric sand from joints, and cause thousands of dollars in damage over a single Ottawa winter.

Shovelling Best Practices

For manual snow removal, use a plastic or composite blade shovel rather than a metal one. Metal blades catch on paver edges, chip corners, and scrape polymeric sand out of joints. Push snow rather than scraping — keep the shovel blade slightly above the paver surface and let de-icer handle the thin bottom layer. If you must scrape, shovel parallel to the paver laying pattern rather than against it, which reduces the chance of catching raised edges.

Snowblower Use

Two-stage snowblowers are generally safe for interlock driveways in Ottawa, but adjust the scraper bar height to sit at least 5 millimetres above the paver surface. Single-stage snowblowers with rubber paddles that contact the ground should be avoided entirely — they grab paver edges and can dislodge border courses. For homeowners in Orleans, Kanata, and other Ottawa suburbs with large interlock driveways, a two-stage blower with adjustable skid shoes is the best DIY option.

Professional Snow Removal

If you hire a plow company, ensure they use rubber or polyurethane plow blades on your interlock surface. Steel blades are the number one cause of interlock damage during Ottawa winters. The blade should be set to leave a thin snow layer rather than scraping to bare pavers. Back-drag blades with rubber edges work well for clearing near garage doors without pushing into the house. Expect to pay $30 to $60 per visit or $400 to $1,200 per season for residential plowing in Ottawa, with a small premium for interlock-appropriate equipment.

Protecting Polymeric Sand

Polymeric sand is the binding agent that keeps your pavers locked together and prevents weed growth. Aggressive snow removal strips it out, leaving joints open to water infiltration that causes heaving during freeze-thaw. After winter, inspect your joints in early spring — if you can see gaps or the sand level has dropped below the paver chamfer, re-sand before the spring rains push more material out. Budget $2 to $4 per square foot for professional re-sanding.

De-Icing for Interlock

Avoid rock salt on interlock surfaces as it causes efflorescence — white salt staining that is difficult to remove. Calcium chloride or magnesium chloride are better options that are effective at Ottawa's extreme temperatures and less likely to stain. Apply sparingly after shovelling and focus on shaded areas where ice persists. Never use de-icer on pavers sealed within the previous 30 days.

Pre-Winter Preparation

Before the first snowfall, check that all pavers are level, borders are secure, and polymeric sand is at the proper level. Fix any issues in October while the ground is still workable. Install snow stakes along the driveway edges so plow operators can see the boundaries clearly in low-visibility conditions.

Find interlock-experienced contractors through Ottawa Driveways who can help with winter preparation, spring repairs, and year-round maintenance of your paver driveway.

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Looking for experienced contractors? The [Ottawa Construction Network](https://justynrookcontracting.com/directory?trade=paving) connects Ottawa homeowners with qualified professionals:

- [Justyn Rook Contracting](https://justynrookcontract Ottawa

For a standard two-car driveway (roughly 40 to 50 square metres), an asphalt overlay typically runs between $3,500 and $6,500 in Ottawa. This includes surface preparation, a tack coat or bonding agent, and a new layer of hot-mix asphalt. By contrast, a full removal and repave of the same driveway usually costs $7,000 to $14,000 depending on the depth of excavation, granular base replacement, and disposal fees.

That means an overlay can save you 40% to 55% compared to starting from scratch, which is a significant difference for homeowners in Barrhaven, Kanata, or Orleans working within a renovation budget.

When an Overlay Makes Sense

An overlay is viable when the existing asphalt base is still structurally sound. If you have surface cracking, minor ravelling, or oxidation but the sub-base has not shifted or failed, a new layer of asphalt bonded to the old surface can add another 12 to 18 years of life. Ottawa contractors will assess the driveway for signs of base failure such as large alligator cracking, deep settlement, or standing water, which would indicate that an overlay alone will not hold up through our freeze-thaw cycles.

Why Full Replacement Costs More

The bulk of the extra cost comes from labour-intensive removal. Contractors must saw-cut and break up the existing asphalt, haul it to a recycling facility, then re-grade and compact the granular base before paving. In Ottawa, disposal and trucking fees alone can add $1,500 to $3,000 to a project, especially for properties

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