Block and base foundations, while somewhat old-fashioned compared to modern concrete slabs, are still very common in many older homes and structures. This type of foundation involves a structure being raised above the ground with blocks supporting the base. Although durable, block and base foundations are prone to specific issues, including cracking, which can signal various underlying problems. Understanding what these cracks may indicate is essential for maintaining the integrity and safety of your home. DuraTech Texas will share what cracks in a block and base foundation may signal for the integrity of your home.

Types of Cracks & Their Implications

• Vertical Cracks: Vertical cracks in a block and base foundation might seem less alarming than horizontal cracks, and often, they are. These are typically caused by the natural settling of the house over time. Although they may not suggest severe structural damage, it’s important to monitor them to ensure they don’t widen or allow water to seep through.
• Horizontal Cracks: Horizontal cracks are more concerning as they often means that there is excessive lateral pressure on the walls. This could be due to soil expansion from moisture or improper drainage around the foundation. If these cracks are observed, they require immediate attention as they compromise the structural stability of the foundation.
• Stair-Step Cracks: Appearing mainly in block foundations, stair-step cracks follow the mortar joints between blocks. These often result from differential settling of the foundation or from lateral pressure. Such cracks can vary in seriousness but should be evaluated by a professional, especially if they leak water or widen.
• Diagonal Cracks: These cracks may start at a corner of a foundation or around windows or doors and can be caused by uneven settling of the ground beneath the foundation. Like stair-step cracks, their severity can vary, but they often require professional assessment.

What to Do If You Notice Cracks

• Regular Monitoring: If the cracks are small and appear stable, monitor them for changes in size or shape.
• Seal Cracks: Small cracks should be sealed to prevent water from entering and causing further deterioration.
• Professional Foundation Inspection: For major or expanding cracks, or if you notice multiple types of cracks, it is best to get a professional inspection. Structural engineers or foundation repair specialists can provide a thorough assessment.
• Address External Causes: Ensure good drainage around the foundation, manage tree growth near your home, and consider installing a root barrier if necessary.
• Foundation Repair: Depending on the assessment, various repair methods might be recommended. This could include underpinning with piers, installing new footing, or reinforcing existing blocks.

Foundation Inspection & Repair Services in Crosby, Cypress, Friendswood & Greater Houston, Texas

Cracks in a block and base foundation can be benign or the early warnings of serious structural issues. Understanding the nature of these cracks and responding appropriately is crucial. Regular inspections and maintenance go a long way towards preserving the structural integrity of your foundation and, by extension, your home. When you discover major cracks developing in your block and base foundation, contact DuraTech Texas and schedule an inspection and repairs today!