Can Moldy Stucco Be Cleaned, or Must It Be Replaced?

Start by examining the affected area closely. Surface mold, which appears as dark spots or streaks, can sometimes be cleaned with a mild detergent and water. Use a soft brush to scrub gently, then rinse and let it dry completely.

If the mold has penetrated deeper, you may see crumbling or soft spots in the stucco. Press a screwdriver gently into the surface; if it sinks in easily, the stucco may be compromised. In that case, cleaning alone might not be enough.

• Check for visible cracks or gaps
• Look for discoloration beyond the surface
• Smell for musty odors that indicate deeper growth
• Test a small area with a moisture meter if available

Replacement becomes necessary when the stucco is structurally damaged, such as large cracks, delamination, or extensive crumbling. If mold has infiltrated the underlying material, cleaning may only address the surface, leaving spores to regrow.

Also, if the mold covers more than a small area or keeps returning after cleaning, consider replacement. A local water damage pro can evaluate the situation and advise on the right course. They have the tools to test moisture levels and assess the integrity of the stucco.

If you're unsure about the extent of mold or the condition of your stucco, it's wise to get a professional opinion. Local water damage pros can inspect the area and determine whether cleaning or replacement is appropriate. They can also handle the job safely, especially if the mold is widespread.

Before any work begins, check your insurance policy. Policies vary, and your insurer decides what is covered. If mold damage is a result of a covered water event, you may have some reimbursement available.