Concrete is tough — but it’s not indestructible. Many people assume power washing is always safe for concrete, but the truth is: yes, it can be damaged by improper pressure washing.
How Concrete Gets Damaged
While concrete can handle high pressure better than softer materials, too much force or the wrong technique can lead to:
- Surface etching or pitting
- Stripped sealants or coatings
- Exposed aggregate
- Cracks made worse by forced water intrusion
These issues not only affect appearance but can also compromise durability over time — especially in freeze-thaw cycles.
Key Risk Factors
- PSI Settings: Concrete can typically withstand up to 3,000–3,500 PSI, but using more than necessary increases the risk of damage.
- Age of Concrete: New concrete (less than a year old) is more vulnerable to etching and should be washed gently.
- Nozzle Type: Turbo or zero-degree nozzles can do serious harm if misused — a 25- or 40-degree fan tip is safer.
- User Technique: Holding the wand too close or lingering in one spot can cause uneven wear or scarring.
Trust a Professional for the Right Balance
A professional knows how to adjust pressure, choose the right nozzle, and spot early signs of damage. Whether it’s a driveway, patio, or sidewalk, proper technique is key to cleaning without compromising the surface.
