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The best way to assess that your stucco needs repair is to inspect it, both visually and physically. If you notice cracks, chips, or staining, that’s a good indication that your stucco could use some TLC by a professional. Additionally, if you touch an area that feels soft and has a little “give,” you should consider repairing it as soon as possible to avoid further damage, both to additional stucco spots and to your home’s structure. 

The decision to repair or replace stucco depends on the extent of the damage. For minor issues like small cracks, holes, dirt, stains, or discoloration, a repair is typically sufficient and more cost-effective. These issues can often be resolved with a simple repair, a deep clean, and possibly a new coat of paint. However, for more significant problems such as large cracks, peeling, mold, algae, or structural water damage, a replacement might be necessary. In these cases, it is best to call a professional stucco contractor for an inspection. An expert can assess the severity of the damage, determine if there are deeper issues, and advise whether a repair is adequate or if replacing a section or an entire wall is the more cost-effective, long-term solution.

Stucco repair can best be described as a patch. It involves identifying the problem and fixing that specific damage with additional stucco. If no mold infiltration or an underlying leak is causing the damage, repair is most likely all you need. 

Remediation, on the other hand, involves removing the existing siding, fixing the underlying cause of the damage, and then reapplying stucco siding for that wall. It’s a more permanent fix that takes longer to complete and, hence, comes with a steeper price tag than repair.

When cleaning stucco siding, it is recommended to use a pressure washer with a psi (pounds per square inch) between 1,500 and 2,000. This range provides sufficient power to remove dirt and grime without causing damage to the stucco surface. It's important to avoid using excessive psi as it can chip or crack the stucco. 

Using a wider spray nozzle and keeping a safe distance of about seven to 10 feet from the siding helps ensure a gentle and effective cleaning process. Always follow the manufacturer's guidelines and adjust the psi accordingly based on the condition of your stucco and the specific requirements of your pressure washer.