Interlocking

Interlocking is a method of constructing durable and visually appealing outdoor surfaces using specially designed blocks or pavers that fit tightly together without the need for mortar. These blocks can be made from various materials such as concrete, brick, or natural stone, allowing for a range of design options.

The interlocking technique not only offers aesthetic versatility with different patterns and colors but also provides structural strength, enabling the surface to withstand harsh weather conditions and heavy foot or vehicle traffic. The interlocking design facilitates better drainage, preventing water pooling and reducing the risk of damage.

This method significantly reduces weed growth due to the tight fit of the blocks, resulting in lower maintenance requirements. Ultimately, interlocking enhances the usability and value of outdoor spaces, creating functional areas for enjoyment throughout the year, whether for walkways, patios, or driveways.

Step-by-Step Process of Interlocking

Step 1: Planning and Design

  • Assess the Area: Evaluate the space where the interlocking will be installed. Consider the size, shape, and any existing structures or landscaping features.

  • Select Pavers: Choose the type and colour of interlocking pavers that best suit your aesthetic and functional needs.

Step 2: Gathering Materials and Tools

  • Materials Needed:

    • Interlocking pavers

    • Gravel (for the base layer)

    • Limestone

    • Sand (polymeric and base sand)

Step 3: Preparing the Site

  • Clear the Area: Remove any existing sod, grass, or debris from the installation area.

  • Excavate the Area: Dig to a depth of approximately 8 to 12 inches, depending on the paver thickness and base material needed. Ensure the excavation has a slight slope for water drainage.

Step 4: Base Installation

  • Add Gravel: Fill the excavated area with 4 to 6 inches of crushed gravel, spreading it evenly.

  • Compact the Gravel: Use a plate compactor to firmly compact the gravel base to create a solid foundation.

Step 6: Adding Limestone

  • Spread Base Limestone: Pour a 1-2 inch layer of base limestone over the compacted gravel.

  • Level the Limestone: Use a rake to spread and level the limestone, creating a smooth surface for the pavers.

Step 7: Laying Pavers

  • Start Laying Pavers: Begin laying the interlocking pavers from a corner or one side of the area, following the chosen pattern.

  • Fit Pavers Together: Gently tap each paver with a rubber mallet to ensure a snug fit.

Step 8: Filling Joints

  • Add Polymeric Sand: Once all pavers are in place, spread polymeric sand over the surface, ensuring it fills the joints between pavers.

  • Compact the Pavers: Use the plate compactor again to help settle the pavers and sand into place.

Step 9: Final Cleanup and Sealing

  • Remove Excess Sand: Sweep away any excess polymeric sand from the surface of the pavers.

  • Seal (Optional): If desired, apply a sealing product to protect the pavers and enhance their appearance.

Step 10: Curing

  • Allow to Settle: Let the area settle and cure for at least 24 to 48 hours before heavy use, ensuring everything is properly set in place.

Following these steps will help ensure a successful interlocking installation, providing a durable and attractive outdoor surface.

Man laying interlocking paving stones with a rubber mallet
Interlocking gray and black concrete paving stones
  • Interlocking pavers and asphalt are common paving materials, each with distinct benefits.

    Interlocking Pavers
    Made from concrete or brick, these pavers fit together like puzzle pieces, allowing flexibility and reducing cracking. They come in various shapes and colors, enhancing aesthetics and providing drainage through gaps.

    Asphalt
    A mix of aggregates and bitumen, asphalt is durable and typically more affordable than interlocking pavers. However, it can soften in heat and crack during freeze-thaw cycles, requiring regular maintenance like sealcoating.

    In summary, choose based on budget, aesthetics, and maintenance. Interlocking pavers offer versatility and durability, while asphalt is a cost-effective option.