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Failing to repair damaged stucco can lead to significant problems. Cracks can grow and deepen, allowing water and moisture to get behind the stucco. This moisture intrusion can cause water damage, structural issues, and mold or mildew growth. Delaying repairs will likely cost more in the long run as the damage worsens, so it's best to repair your stucco as soon as you notice any signs of damage, such as cracks, holes, or discoloration.

To repair damaged exterior stucco, you’ll first remove all loose and crumbling material from the damaged area. You then need to thoroughly clean the area and dampen it to ensure proper bonding. After that, you’ll apply a bonding agent to the repair area, then apply new stucco in layers, allowing for curing time between each layer. The final coat should be textured to match the surrounding stucco pattern as closely as possible. Once fully cured, the repaired area can be painted to match the rest of the wall if needed.

Choosing between traditional and synthetic stucco depends on your specific needs, budget, and climate. Both options are durable, but synthetic stucco includes an extra layer that makes it more resistant to cracking and a better choice for climates with extreme weather. In hot, dry climates with less rainfall, traditional stucco is a suitable and more affordable option that is less likely to trap moisture. Synthetic stucco also offers more color options and requires less maintenance.

A standard drill will work just fine if you’re drilling small holes, and only a few of them. But anything with a diameter larger than 3/8 inch is best done with a hammer drill, since it is stronger, faster, and also makes your drill bits last longer. While you don’t absolutely need a hammer drill for stucco, it is a worthy investment if you think you might drill more holes down the road.