Interlocking pavers are precast concrete units laid in an interlocking pattern over a compacted granular base. When properly designed and installed, they can provide a durable surface and allow localized repairs without rebuilding the entire area.
In this guide
Interlocking paver project types
Interlocking pavers are used for driveways, patios, pool surrounds, walkways and steps. Retaining walls are a separate landscape masonry system with their own base, drainage and construction requirements.
Base and compaction
Preparation below the surface plays a major role in the stability and long-term performance of the project. The soil is excavated, then a crushed-stone base is placed and compacted in successive layers. A uniformly compacted base spreads loads and limits frost-related movement.
Drainage
Water trapped under a surface freezes, pushes and shifts pavers. Slope and drainage are planned around the site conditions to direct water away from foundations and sensitive areas.
Bedding and edge restraints
Between the base and the pavers, a thin, levelled bedding course gives a uniform surface. Around the perimeter, anchored edge restraints hold everything together: without adequate edge restraint, pavers can shift and the perimeter can gradually open.
Polymeric sand
The joints are filled with polymeric sand that hardens after watering. It helps stabilize the joints, limits sand loss and slows the appearance of weeds and ants. It may need to be renewed as part of normal maintenance.
Project steps
- 1. Detailed estimate — site and needs assessment
- 2. Excavation — depth suited to the use
- 3. Base and compaction — in layers
- 4. Laying, cuts and edging
- 5. Polymeric sand and finishing
Pricing and maintenance
Pricing depends on factors such as project size, access, soil conditions, required preparation depth, paver selection and additional features. Each project is evaluated according to its actual conditions — see the Installation page for details.
On maintenance: depending on the condition of the pavers and the base, full replacement is not always necessary. Localized settlement, empty joints or shifted edges may sometimes be corrected through targeted repair.
Frequently asked questions
How does the durability of interlocking pavers compare with asphalt?
Lifespan depends on the base, drainage, use and maintenance. One advantage of interlocking pavers is that a localized section can be lifted and re-laid. Asphalt repairs are generally completed by cutting and patching, using a different method and finish.
Can interlocking pavers be installed over an existing base?
An existing base can sometimes be reused, but only after its condition, stability and drainage have been assessed. Installing pavers over an unchecked base increases the risk of future movement. The 3-year warranty applies only to complete installations built with a new foundation.
Warranty: The 3-year warranty applies to complete installations built with a new foundation. Repairs, re-levelling and installations over an existing foundation are not covered.