Pressure washing is a common method used to clean a variety of surfaces, including concrete. However, if you have recently refinished your concrete, you may be concerned about whether pressure washing could potentially harm the newly applied finish. In this article, we will explore this topic in detail and provide insights into the effects of pressure washing on refinished concrete.
Understanding Refinished Concrete:
Before discussing the impact of pressure washing on refinished concrete, it is essential to understand what refinished concrete entails. Refinishing concrete involves applying a protective coating or sealer to the surface, enhancing its appearance and durability. This process helps prevent damage caused by weathering, water intrusion, and general wear and tear.
The Importance of Maintaining Refinished Concrete:
Maintaining refinished concrete is essential to ensure its longevity and preserve its appearance. Regular cleaning is a crucial aspect of this maintenance routine, and pressure washing is often considered an effective method to remove dirt, grime, and other stubborn stains from concrete surfaces.
Effects of Pressure Washing on Refinished Concrete:
While pressure washing can be beneficial for general concrete maintenance, there are some potential risks associated with using high-pressure water on refinished concrete. These risks include:
1. Damaging the Protective Coating:
One of the primary concerns with pressure washing refinished concrete is the potential to damage or strip away the protective coating. High pressure can chip or peel off the finish, leaving the underlying concrete vulnerable to elements and reducing the overall lifespan of the refinished surface.
2. Weakening the Concrete Surface:
Another risk is that pressure washing can weaken the concrete surface. If the pressure is excessively high or the nozzle is too close to the concrete, it can erode the surface and cause cracks or pitting. This compromises the structural integrity of the refinished concrete.
3. Dislodging Aggregate Particles:
Refinished concrete surfaces often have decorative aggregate particles embedded within the coating. Pressure washing may dislodge these particles, leading to an uneven appearance or even bare spots in the finish. This can affect the aesthetics of the concrete and require additional repair work.
Precautions to Take:
To minimize the risk of damage when pressure washing refinished concrete, it is crucial to take certain precautions:
1. Use Low Pressure:
Adjust the pressure settings on the pressure washer to the lowest safe level necessary to remove dirt and grime. Avoid using high-pressure nozzles or settings that can potentially damage the finished surface.
2. Maintain a Safe Distance:
Keep an adequate distance between the pressure washer nozzle and the concrete surface. Most pressure washer manufacturers recommend a distance of 12-18 inches to prevent surface damage. Experiment with different distances to find the optimum one for your specific situation.
3. Test in a Small, Inconspicuous Area:
Before pressure washing the entire refinished concrete surface, it is wise to test the equipment and technique in a small, inconspicuous area. This allows you to assess any potential adverse effects before committing to pressure washing the entire surface.
4. Seek Professional Advice:
If you are unsure about the pressure washing process or concerned about damaging refinished concrete, it is best to consult a professional. They can offer guidance, recommend suitable pressure washing methods, or provide alternative cleaning solutions to preserve the integrity of your refinished concrete.
Pressure washing can be a highly effective method for cleaning various surfaces, including concrete. However, when it comes to refinished concrete, caution must be exercised to avoid potential harm to the protective coating and the underlying surface. By taking necessary precautions, adjusting pressure settings, maintaining a safe distance, and seeking professional advice when required, you can safely and effectively clean your refinished concrete while ensuring its long-term durability and aesthetics.