Discovering cracks in your home's stucco exterior can be concerning, but it's important to understand that not all cracks are cause for alarm. Stucco is a durable yet rigid material, making it naturally prone to cracking under certain conditions. While some cracks may require the attention of stucco repair contractors, others can be easily managed with simple maintenance. Here's a comprehensive guide on why stucco cracks, how to assess the severity of the cracks, and when to seek professional repairs.

What Causes Stucco to Crack?

Stucco, due to its brittle nature, is susceptible to cracking, particularly when subjected to environmental changes. Several factors contribute to the development of cracks:

• Temperature Fluctuations: Stucco doesn't flex well, making it vulnerable to shrinkage cracks as temperatures rise and fall. The expansion and contraction of the material can lead to fine hairline cracks on the surface.
• Structural Movement: As your home settles over time, or if the underlying substrate (such as plywood sheathing) is loose or unstable, stress can be placed on the stucco, resulting in crack patterns. These are often seen around windows, doors, and other openings where movement is more likely.
• Moisture Exposure: Stucco surfaces regularly exposed to moisture from rain, wind, or even landscaping sprinklers can experience changes in texture and integrity. Prolonged moisture can weaken the stucco, making it more prone to cracking over time.

Understanding these causes can help you identify whether the cracks in your stucco are a natural occurrence or indicative of more serious underlying issues.

Assessing the Severity of Stucco Cracks

Not every crack in your stucco requires immediate action. The key to determining the need for repairs lies in evaluating the width, length, and location of the cracks:

• Hairline Cracks: Cracks less than 2mm wide are typically superficial and may not require extensive repairs. These small cracks are often the result of minor shrinkage or settling and can usually be addressed by simply filling them with a flexible sealant and repainting the affected area.
• Wider or Repeating Cracks: Cracks that are wider, especially those near the corners of windows, doors, or other openings, or those that form repetitive patterns, may signal more significant issues. These types of cracks could indicate underlying structural problems or improper installation of the stucco, which would require the expertise of a stucco repair contractor.
• Vertical Cracks: Vertical cracks, particularly those near the corners of your home or running the full height of a wall, are often a red flag. They could point to more severe structural issues or significant settling, both of which necessitate professional assessment and repairs.

By closely inspecting the cracks in your stucco, you can determine whether they are merely cosmetic or if they warrant more serious attention.

Preventing Further Damage to Your Stucco

While it's impossible to prevent all cracks from forming in stucco, there are steps you can take to minimize their occurrence and protect your home's exterior:

• Ensure Proper Drainage: Good drainage is essential in preventing water from seeping into the stucco and causing cracks. Make sure that gutters, downspouts, and landscaping are designed to direct water away from your home's foundation and walls.
• Regular Inspections: Scheduling regular inspections with a stucco repair company can help you catch minor issues before they escalate into significant problems. A professional can identify potential trouble spots and recommend preventive measures to keep your stucco in top condition.
• Maintain Landscaping: Keep plants and shrubs trimmed and away from your stucco walls to prevent moisture buildup and mechanical damage from roots or branches.
  
  

When to Contact a Professional Stucco Contractor

If you're uncertain about the severity of the cracks in your stucco, it's always a good idea to consult with a professional stucco repair contractor. They can evaluate the damage and determine whether simple repairs, such as filling cracks and repainting, will suffice, or if more extensive work, like repairing the substrate, re-stuccoing, or adding structural support, is necessary.

Engaging a professional early on ensures that you address the root cause of the cracking, rather than just masking the symptoms. This proactive approach can save you time, money, and potential headaches down the road.

While minor stucco cracks are a common occurrence, it's important to monitor them and take action when necessary. Understanding the causes of cracking, accurately assessing the severity, and knowing when to call in a professional are key to maintaining the beauty and integrity of your home's stucco exterior. If you're concerned about cracks in your stucco or need professional advice, Modern Builders is here to help. Contact us in the Pasadena area to discuss your stucco repair needs and ensure your home remains well-protected for years to come.