How to Spot and Fix Common Stucco Issues
- affordablessd1
- May 5
- 5 min read
Stucco is a popular choice for both exterior and interior finishes due to its durability, versatility, and aesthetic appeal. It offers a textured, stylish look that can enhance the overall beauty of a home. However, like any material, stucco is prone to wear and tear over time. Whether it's from weather damage, foundation shifts, or general aging, stucco can develop a variety of issues. Affordable Stucco knows how to spot these common problems early on and how to fix them can save you time and money in the long run.
In this blog, we’ll go over some of the most common stucco issues homeowners face and how to address them.
1. Cracks in the Stucco
Problem:
Cracks in stucco are among the most common issues homeowners face. These can range from small, hairline fractures to larger, more serious breaks. Cracks often appear due to foundation settling, moisture infiltration, or the natural expansion and contraction of the material with temperature changes.
How to Spot It:
Hairline cracks that may or may not be noticeable from a distance.
Larger, jagged cracks that could appear in a zigzag pattern or along joints.
Discoloration around cracks, indicating moisture infiltration.
How to Fix It:
● Small Cracks: For smaller, superficial cracks, you can use a stucco patching compound. Clean the crack, apply the compound with a putty knife, and smooth it out. Once it’s dried, sand the patched area to make it level with the surrounding stucco.
● Large Cracks: Larger cracks might need a more comprehensive approach. You may need to use a stucco repair patch or mesh tape for reinforcement before applying a new coat of stucco. If the crack is caused by shifting or settling of the foundation, it's best to consult a professional to ensure it doesn’t signal a bigger issue.
2. Stucco Bubbling or Blistering
Problem:
Bubbling or blistering occurs when air or moisture becomes trapped beneath the stucco surface. This can happen if the stucco was applied over a damp surface or if moisture has infiltrated the stucco through cracks or gaps. The trapped moisture causes the stucco to bubble outwards, creating an unsightly and potentially damaging appearance.
How to Spot It:
Raised, round or irregularly shaped blisters on the surface of the stucco.
Soft spots where the stucco seems to have lost its strength or integrity.
Visible cracks near the blisters where moisture might be entering.
How to Fix It:
● Dry the Area: First, you'll need to identify the moisture source and let the area dry out. This might mean waiting until the weather improves or addressing leaks in the roof, gutters, or walls.
● Cut and Replace: If the bubbles are large or extensive, you may need to cut away the affected stucco, remove any water-damaged layers, and then reapply new stucco. Be sure to use a bonding agent before applying the new layer.
● Prevent Future Issues: Make sure that the area is properly sealed and moisture-free before reapplying stucco to prevent the issue from reoccurring.
3. Stucco Discoloration or Staining
Problem:
Over time, stucco may develop stains or discoloration due to moisture, mold, algae, dirt, or pollution. If left unchecked, discoloration can lead to the deterioration of the stucco and affect your home's curb appeal.
How to Spot It:
Visible dark stains or patches on the surface of the stucco.
Green or black spots, which may indicate mold or algae growth.
Areas that are discolored compared to the rest of the surface, especially near joints or around windows.
How to Fix It:
● Power Wash: A power washer with mild detergent or a specialized stucco cleaner can often remove surface dirt, algae, or mold. Be sure to use low pressure to avoid damaging the stucco.
● Mold and Mildew Removal: If mold or mildew is present, treat the area with a cleaning solution that contains a mold-killing agent. After scrubbing the area, rinse thoroughly and allow it to dry completely.
● Repaint: For more severe discoloration or stains, it may be necessary to repaint the stucco once the surface is thoroughly cleaned and dried. Make sure to use a paint specifically designed for stucco.
4. Stucco Softening or Deterioration
Problem:
Stucco can begin to soften or deteriorate due to prolonged exposure to moisture or a poor initial application. Over time, this can lead to crumbling, peeling, or a weakened surface that no longer offers the same protection to the structure beneath it.
How to Spot It:
Soft or crumbly texture when touched.
Chipping or peeling paint that comes off with little effort.
Visible holes or chunks missing from the stucco surface.
How to Fix It:
● Drying and Stabilizing: The area must be thoroughly dried before repairs can begin. Once dry, use a bonding agent to stabilize the surface.
● Stucco Patch: For small areas, a stucco patching compound can be applied to fill in gaps or cracks. For larger areas, you may need to remove the damaged stucco entirely and apply a new layer.
● Resurfacing: In extreme cases, you may need to resurface the entire stucco wall. This involves applying a new coat of stucco over the old surface, which is ideal for renewing its strength and appearance.
5. Foundation Shifting or Cracking (Stucco and Foundation Issues)
Problem:
Stucco may crack or develop other issues if the foundation beneath the home is shifting or settling. This can be a more serious problem that affects the integrity of both the foundation and the stucco.
How to Spot It:
Large, zigzag cracks along corners or near windows and doors.
Gaps or separation between stucco and window frames, door frames, or corners.
Uneven or slanted floors inside the home.
How to Fix It:
● Foundation Inspection: If you notice signs of foundation issues, it's crucial to have a professional inspect your foundation immediately. The foundation might need to be leveled or repaired before stucco repairs can be made.
● Reapply Stucco: After any necessary foundation repairs are completed, you can reapply stucco to fill the gaps and cracks caused by settling. In some cases, reinforcing the stucco with a mesh or wire lath may be necessary for added stability.
6. Improperly Applied Stucco
Problem:
Stucco that’s improperly mixed or applied can lead to a variety of issues, such as poor adhesion, cracking, or bubbling. If the stucco is too thick, too thin, or applied over an improperly prepared surface, it may fail to adhere properly, resulting in premature wear.
How to Spot It:
Loose or peeling stucco in certain areas.
Cracking in patterns that suggest the material wasn’t applied correctly.
Uneven texture or visible patchwork where repairs were made.
How to Fix It:
● Reapplication: If the stucco was applied improperly, it’s best to remove the faulty layers and start fresh. Make sure the surface is properly prepped, and the mix is correct before applying a new layer of stucco.
● Consult a Professional: If you’re unsure about the application process, it’s a good idea to consult a professional to ensure proper application and long-term durability.
Learn more about our expert stucco repair services for homes.
Final Thoughts
Stucco is a highly durable material that, when maintained properly, can last for decades. However, common issues such as cracks, discoloration, and moisture damage can arise over time. Spotting these problems early and addressing them promptly can help you maintain your home’s aesthetic appeal and prevent more serious damage.
Whether you’re dealing with minor cosmetic issues or more significant damage, following these steps will help you restore your stucco and protect your home. If you’re unsure about making repairs yourself or if the damage is too extensive, consult Affordable Stucco who can assess the situation and provide the best solution.
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