What type of edge restraint should I use for my interlock paver driveway and do Ottawa contractors install them properly?

Edge restraints are one of the most overlooked components of an interlocking paver driveway, yet they are absolutely critical — especially in Ottawa where frost heave, snowplow contact, and heavy freeze-thaw cycling constantly push against paver edges.

Why Edge Restraints Are Non-Negotiable

Without proper edge restraints, the pavers along your driveway borders will gradually creep outward. Once edge pavers shift even slightly, the interlocking system loses its structural integrity — joints open up, polymeric sand falls out, and the entire surface becomes susceptible to shifting and settling. In Ottawa, where snowplow blades regularly catch driveway edges and frost heave exerts lateral pressure, unrestrained edges can fail within a single winter.

Types of Edge Restraint Available

Aluminum or Steel Paver Edging

• The most common choice for residential Ottawa driveways. Products like Snap Edge, PaveEdge, or similar L-shaped aluminium extrusions are staked into the granular base with 10-inch galvanised spikes.


• Cost: $3 to $6 per linear foot installed.


• Pros: Flexible enough to follow curves, nearly invisible once backfilled, proven performance in Ottawa conditions.


• Cons: Can work loose over time if insufficient spikes are used (minimum every 12 inches for Ottawa freeze-thaw conditions).

• A row of pavers set vertically ("soldier course") in a concrete haunch provides the strongest possible edge restraint.


• Cost: $8 to $15 per linear foot installed.


• Pros: Extremely durable, provides a finished architectural look, excellent resistance to snowplow impact.


• Cons: Permanent — any future driveway modifications require cutting or removing the concrete.

• Budget option available at Ottawa building centres. Lightweight plastic strips staked into the base.


• Cost: $1 to $3 per linear foot installed.


• Pros: Very affordable, easy to install.


• Cons: Brittle in Ottawa's extreme cold, prone to cracking and heaving. Not recommended for driveway applications — better suited for garden paths or patios.

• A full poured concrete curb or precast concrete border creates a permanent, highly visible edge.


• Cost: $12 to $20 per linear foot for poured; $8 to $14 per linear foot for precast units.


• Pros: Maximum durability, defines the driveway boundary clearly for snowplow operators.


• Cons: Highest cost, requires forming and curing time for poured option.

Some contractors skip edge restraints entirely or use minimal plastic edging to save time and materials. This is a red flag. Before signing a contract, confirm in writing that the quote includes edge restraint and specify the type. For driveways in Stittsville, Kanata, and other areas where municipal plowing comes close to driveway edges, consider the concrete haunch or poured curb options for maximum protection.

ICPI and Ontario Building Code

The Interlocking Concrete Pavement Institute requires edge restraints on all paver installations. While the Ontario Building Code does not specifically regulate driveway edge restraints, any reputable contractor follows ICPI guidelines as the industry standard. Contractors who hold ICPI certification have been specifically trained on proper edge restraint installation.

Find ICPI-trained interlock contractors in your area through Ottawa Driveways to ensure your paver driveway is built with proper edge restraints that will hold up to Ottawa's demanding conditions.

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

• Justyn Rook Contracting
• RenoMotion Inc.
• M.O.T. CONSTRUCTION INC.
• BFI Renovations
• L.L. Renovation