What does interlock removal and disposal cost in Ottawa?

Interlock removal and disposal in Ottawa typically costs $3 to $6 per square foot, meaning a standard 400-500 square foot driveway runs $1,200 to $3,000 for complete tear-out and disposal. This wide range depends on paver thickness, base depth, accessibility, and disposal fees at local facilities.

Breaking Down the Removal Process

Interlock removal involves lifting individual pavers, removing polymeric sand from joints, excavating the bedding sand layer (typically 25-50mm), and often removing portions of the granular base if it's contaminated or inadequate for the new surface. In Ottawa, many interlock driveways were installed with 300-400mm of total base depth, but current best practices call for 450mm+ due to our 1.2-1.5 metre frost line. Contractors often need to remove and replace base material that doesn't meet today's standards.

The paver removal itself is labour-intensive — each unit must be lifted individually with pry bars or mechanical lifters, especially if polymeric sand has hardened the joints. Thicker 80mm commercial pavers take significantly more effort than standard 60mm residential units. Pavers that have settled or shifted may be locked together, requiring careful extraction to avoid damage if the homeowner wants to salvage some units.

Ottawa-Specific Disposal Considerations

Concrete interlock pavers are considered clean fill and can be recycled at facilities like Tomlinson Environmental Services or Miller Waste, but disposal fees range from $15 to $35 per tonne. A typical Ottawa driveway generates 15-25 tonnes of material including pavers, sand, and contaminated base. Natural stone pavers may have different disposal requirements and costs.

Contaminated base material (mixed with clay, organic matter, or old asphalt) costs more to dispose of than clean granular material. Many Ottawa driveways built on clay soils have base contamination from frost heaving and poor drainage, requiring disposal at construction waste facilities rather than clean fill sites.

Factors Affecting Cost

Accessibility dramatically impacts pricing — driveways accessible to mini-excavators and dump trucks cost significantly less than those requiring hand removal and wheelbarrow transport. Tight urban lots in areas like the Glebe or Westboro often require manual removal, doubling labour costs.

Salvage value can offset costs if pavers are in good condition. Quality concrete pavers in popular colours may have resale value of $2-5 per square foot, though most pavers show enough wear, staining, or damage after 15-20 Ottawa winters to have minimal salvage value. Natural stone pavers retain more value but are harder to remove without damage.

When to Hire a Professional

Interlock removal requires proper equipment — mini-excavators for efficient lifting, dump trucks for hauling, and knowledge of disposal facility requirements. DIY removal is backbreaking work that takes weeks for an average driveway and still leaves you with disposal logistics. Professional crews complete removal in 1-2 days with proper equipment and established disposal relationships.

Most contractors include removal and disposal in their total replacement quote rather than itemizing it separately. When comparing quotes, ensure removal, disposal, and new base preparation are clearly specified — some contractors quote attractive surface prices but add removal costs later.

Need help finding a driveway contractor for your interlock replacement project? Ottawa Driveways can match you with local paving professionals who handle complete tear-out and installation.