Can you jet wash crazy paving?

Jet washing crazy paving is a feasible method to clean and maintain its appearance, but it requires a careful approach to prevent potential damage to the paving stones and the mortar (pointing) that holds them together. Before you begin, it’s essential to inspect the paving for any signs of damage, such as loose stones, cracks, or eroded mortar. Addressing these issues beforehand is crucial, as the force of jet washing can exacerbate existing problems, leading to further damage.

When using a jet washer on crazy paving, start with a lower pressure setting. The high-pressure water stream can be quite powerful, and while crazy paving is generally robust, using too high a pressure can dislodge the stones or damage the mortar. Gradually adjust the pressure as needed, always being mindful not to exert excessive force. It’s also advisable to maintain a safe distance with the jet wash nozzle, typically a few inches away from the paving surface. This helps to evenly distribute the water pressure, reducing the risk of dislodging stones or damaging the mortar.

It’s recommended to test the jet washer on a small, inconspicuous area first. This preliminary step ensures that the pressure setting and distance won’t cause any harm to the paving. Using the right nozzle or attachment can also make a significant difference. A fan-shaped nozzle or a surface cleaner attachment is preferable as they distribute the water pressure more evenly than a pinpoint nozzle, which can focus too much force on one spot.

Do’s and Don’ts After Jet Washing Crazy Paving:

When it comes to the do’s and don’ts following the jet washing of crazy paving, it’s essential to adhere to specific guidelines to ensure both the longevity of the paving and your safety.


  • Rinse Thoroughly: After using a jet washer, it’s crucial to rinse the crazy paving thoroughly. This step is necessary to remove any loosened dirt, debris, or residual cleaning agents that were dislodged during the washing process. A thorough rinse helps in preventing any residue from settling back into the pores or surface of the paving stones, which could otherwise lead to staining or encourage the growth of moss and algae.
  • Dry Naturally and Inspect: Allow the paving to dry naturally. This process not only reveals the true effectiveness of your cleaning but also provides an opportunity to inspect the paving for any damage that might have occurred during washing, such as loosened stones or eroded mortar. If any damage is found, timely repairs, such as repointing, are crucial to prevent further deterioration.
  • Regular Maintenance: Integrating jet washing into a regular maintenance routine is beneficial, but it should be done judiciously. Overuse of high-pressure washing can eventually erode the surface integrity of the paving and the mortar holding the stones. Regular, but not frequent, washing can keep your crazy paving in prime condition without causing undue stress to the materials.


  • Avoiding Harsh Chemicals: It’s advisable to steer clear of harsh or abrasive cleaning chemicals unless they are specifically formulated for use on crazy paving. Some chemical cleaners can be too aggressive, leading to the erosion or discoloration of both the stones and the mortar. If cleaning agents are necessary, opt for gentle, paving-friendly options and follow the manufacturer’s guidelines for use.
  • Mind the Weather Conditions: Jet washing in freezing conditions should be avoided. The water used in the process can seep into the joints and freeze, expanding and potentially causing the joints to crack or break. This can lead to costly repairs and compromise the structural integrity of the paving.
  • Take Your Time: Rushing through the jet washing process is inadvisable. Hastily moving over the paving can result in uneven cleaning, leaving some areas less clean than others. Moreover, quick, forceful washing increases the risk of inadvertently damaging the paving, particularly if the jet stream dislodges mortar or loosens stones.
  • Safety Precautions: Always prioritise safety when using a jet washer. The high-pressure stream of water can be dangerous if not handled correctly. Wear appropriate safety gear, such as gloves and eye protection, and ensure that the area is clear of other people, particularly children and pets, during the cleaning process.

In conclusion, following these do’s and don’ts after jet washing crazy paving is about striking a balance between effective cleaning and the preservation of the paving’s condition. Regular, careful maintenance, combined with a mindful approach to the use of chemicals and weather conditions, will keep your crazy paving looking its best for years to come. Additionally, never underestimate the importance of safety when handling high-pressure equipment. If you’re ever unsure or if the paving is particularly delicate or valuable, consulting with a professional is always a wise choice.

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