• How To Clean Block Paving

    | by Holly Wood

    Block paving is a popular choice for driveways and patios due to its durability and appealing aesthetic. However, over time, block paving can accumulate dirt, stains, and weed growth, which can diminish its visual appeal. To keep your block paving driveway or patio in tip-top condition, regular cleaning is essential. In this comprehensive guide, we will walk you through the step-by-step process of how to clean block paving effectively, from removing dirt and stains to preventing weed growth. Let’s get started!

    Cleaning Block Paving: The Basics

    Before we dive into the nitty-gritty of block paving cleaning, let’s go over some essential steps that apply to the entire process.

    Gather Your Supplies

    To clean block paving slabs, you’ll need the following supplies:

    • Pressure Washer: A high-pressure water jet is essential for deep cleaning block paving.
    • Stiff Broom: A stiff broom will help you remove loose debris and dirt.
    • Cleaning Solution: Create a mixture of warm soapy water using washing up liquid.
    • Weed Killer: If you have weed growth between paving joints, you’ll need a weed killer.
    • Jointing Sand: You’ll need kiln-dried sand for re-sanding the block paving joints.
    • Protective Clothing: Wear protective clothing, including gloves and eye protection, to stay safe during the cleaning process.

    Check the Weather

    Ensure that the weather is suitable for cleaning. Avoid cleaning block paving on rainy or windy days, as it may not yield the desired results.

    Prepare the Area

    Move any garden furniture, plant pots, or obstacles from the affected area to make the cleaning process more accessible.

    Step 1: Removing Loose Debris

    Start by using a stiff broom to sweep away loose debris such as leaves, twigs, and dirt from the block paved surface. This initial cleaning step prevents these materials from interfering with the subsequent cleaning process.

    Step 2: Apply Weed Killer

    If you have weed growth between the paving blocks, apply a weed killer to the affected areas following the manufacturer’s instructions. Be sure to allow sufficient time for the weed killer to take effect before proceeding to the next step.

    Step 3: Pressure Washing Block Paving

    Now comes the core of the cleaning process – pressure washing. Follow these steps to effectively pressure wash block paving:

    1. Set Up Your Power Washer: Connect the pressure washer to a power source and attach the appropriate nozzle for cleaning block paving. Be careful not to use too much pressure, as this can damage the surface.
    2. Begin Cleaning: Starting from one end of the block paved surface, slowly and methodically move the pressure washer nozzle back and forth, covering the entire area. Maintain a safe distance to avoid damaging the paving.
    3. Clean Block by Block: For stubborn stains or areas with excessive dirt buildup, focus the pressure washer on individual blocks to ensure a thorough cleaning.
    4. Rinse Thoroughly: Once you’ve cleaned the entire area, rinse it thoroughly to remove all the dirt and cleaning solution.

    To jet wash block paving gently, we recommend angling the washer on the lowest pressure setting at around 30 degrees.

    Step 4: Re-Sand the Paving Joints

    After pressure washing, it’s essential to re-sand the paving joints with kiln-dried sand. Follow these steps:

    1. Dry the Paving: Allow the block paving to dry completely before applying the jointing material.
    2. Apply Jointing Sand: Pour kiln-dried sand over the cleaned block paving and use a broom to brush it into the joints. Ensure that the joints are evenly filled.
    3. Remove Excess Sand: Sweep away any excess sand and save it for future use.

    Step 5: Address Stubborn Stains

    If you have stubborn stains like oil stains or tire marks on your block pavers, follow these steps to remove them:

    1. Oil Remover: Apply an oil remover to the affected areas and follow the product’s instructions for usage.
    2. Scrub with a Wire Brush: Use a wire brush to scrub the stained areas gently. This will help lift the stain from the surface.
    3. Pressure Wash Again: After scrubbing, pressure wash the area again to remove any remaining residue.

    Step 6: Prevent Future Issues

    To keep your block paving looking its best for an extended period, consider these preventive measures:

    • Regular Cleaning: Schedule regular cleaning and general block paving maintenance sessions to prevent the build-up of dirt and stains.
    • Apply Weed Killer: Periodically apply weed killer to prevent weed growth between paving joints.
    • Clean Water: If you spill any liquids on your block paving, clean them up promptly to prevent staining.
    • Protective Measures: Use a drainage channel to direct water away from the paved surface and protect it from excess water damage.


    Cleaning block paving doesn’t have to be a daunting task. By following these steps and using the right tools and materials, you can ensure that your block paving stays in tip-top condition for years to come.

    Regular maintenance and cleaning will not only enhance the visual appeal of your block paving but also prolong its lifespan, giving you a beautiful and durable surface for your driveway or patio.

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