water damaged stucco

How to Identify Water-Damaged Stucco

Water-damaged Stucco is an unfortunate problem that homeowners may encounter, and if left unaddressed, it can lead to more serious issues. Stucco, a popular exterior finish for homes, is durable and long-lasting. However, when water infiltrates the stucco system, it can cause significant damage over time. We will explore how to identify signs of water-damaged stucco and the importance of addressing this issue promptly.

Exterior Discoloration and Staining

One of the first signs of water-damaged stucco is exterior discoloration and staining. When water penetrates the stucco, it can cause the color to change or fade in specific areas. Look for patches of discoloration, such as dark spots or streaks, as these can be indications of water infiltration.

Cracks and Blisters

Water-damaged stucco often develops cracks and blisters. These cracks may appear small at first but can widen over time if the water damage persists. Blisters, on the other hand, are raised areas on the stucco surface, indicating that moisture has become trapped beneath the exterior layer. Both cracks and blisters are clear signs of water intrusion and should be addressed promptly.


Efflorescence is a white, powdery substance that forms on the surface of stucco when water evaporates. It occurs when water-soluble salts within the stucco system are brought to the surface by moisture. If you notice a chalky or powdery substance on your stucco, it may be an indication of water damage. Efflorescence can be easily brushed off, but it’s crucial to address the underlying water issue to prevent further damage.

Mold and Mildew Growth

Water-damaged stucco creates a favorable environment for mold and mildew growth. If you observe dark patches or fuzzy growth on your stucco, it is likely a result of excessive moisture. Mold and mildew not only compromise the aesthetic appeal of your home but also pose health risks to you and your family. Addressing water intrusion and removing mold or mildew is essential for a safe and healthy living environment.

Deterioration of Stucco Finish

When water continuously infiltrates the stucco system, it can cause the stucco finish to deteriorate. You may notice peeling, chipping, or flaking of the stucco surface. This deterioration weakens the protective barrier of your home and exposes it to further damage. If you observe significant degradation of the stucco finish, it’s crucial to take immediate action to prevent additional water damage.

Call Sunny Coast Stucco for Help

Identifying water-damaged stucco is essential for maintaining the integrity and longevity of your home’s exterior. Keep an eye out for exterior discoloration, cracks, blisters, efflorescence, mold and mildew growth, and deterioration of the stucco finish. If you notice any of these signs, it’s crucial to address the water intrusion issue promptly.

If you are not sure if you may have water issues, give us a call and let us take a look. You may have had recent flooding or notice a musty smell that gives rise to some suspicions or concerns. Also while it’s nice to believe your home or building was created by competent and knowledgeable professionals, it’s possible that the installation was slapped together quickly and without expertise or care. Unfortunately, improper stucco installation can result in water damage and other problems that need repair.

At Sunny Coast Stucco, we have the skills to assess and repair any stucco problem, from water intrusions to impact damage. Our team of experts is experienced in identifying and resolving water-damaged stucco issues. Contact us by calling (619) 230-5203 here in San Diego, CA, or filling out our online form. Don’t let water damage compromise the beauty and durability of your stucco – take action today!


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