Cracked concrete sidewalks are a common sight in many USA communities. They can be unsightly, pose a tripping hazard, and allow water to seep in and cause further damage. If you're a homeowner or property manager dealing with cracked concrete sidewalks, this guide is for you. We'll discuss the different types of concrete sidewalk repair, the causes of these cracks, and the best methods for concrete sidewalk repair.
Types of Concrete Sidewalk Cracks
Not all fix concrete cracks are created equal. The type of crack will influence the repair method you choose. Here's a breakdown of the most common types of concrete sidewalk cracks:
- Hairline cracks: These are thin cracks, typically less than 1/4 inch wide. They may be unsightly but are often structurally insignificant.
- Settlement cracks: These cracks are caused by uneven settling of the soil beneath the sidewalk. They can vary in width but often have a stair-step pattern.
- Expansion cracks: These cracks are caused by the concrete expanding and contracting due to temperature changes. They are typically straight and vertical.
- Control joints: These are intentional cracks created during the concrete pouring process to help control cracking caused by expansion and contraction.
Causes of Concrete Sidewalk Cracks
Several factors can contribute to concrete sidewalk cracks. Here are some of the most common causes:
- Improper subgrade preparation: The subgrade is the layer of soil beneath the concrete sidewalk. If the subgrade is not properly compacted, it can settle over time, leading to cracks in the sidewalk.
- Poor drainage: If water is not properly drained away from the sidewalk, it can seep into the concrete and cause it to expand and contract, eventually leading to cracks.
- Tree root growth: Tree roots can exert tremendous pressure on sidewalks as they grow, causing cracks.
- Overweight loads: Concrete sidewalks are designed to withstand a certain amount of weight. If they are subjected to overweight loads, such as from trucks or heavy equipment, they can crack.
- Freeze-thaw cycles: In climates that experience freezing temperatures, water can seep into concrete cracks and freeze. As the water freezes, it expands, putting pressure on the concrete and causing the cracks to widen.
- Age: Over time, all concrete will crack. This is due to a natural process called hydration, in which the concrete slowly loses moisture.
DIY Concrete Sidewalk Repair vs. Hiring a Professional
If you're handy and have some experience with concrete work, you may be able to repair small hairline cracks yourself. However, for larger cracks, uneven slabs, or repairs that involve removing and replacing sections of sidewalk, it's best to hire a professional concrete contractor.
Here are some of the benefits of hiring a professional concrete contractor for your concrete sidewalk repair project:
- Experience and expertise: Professional concrete contractors have the experience and expertise to properly diagnose the cause of the cracks and recommend the best repair method.
- The right tools and equipment: Concrete repair often requires specialized tools and equipment that most homeowners don't have. Professional contractors will have the necessary tools to get the job done right.
- Quality workmanship: Professional contractors are skilled in concrete repair techniques and will ensure that your sidewalk is repaired to the highest standards.
- Safety: Concrete work can be dangerous. Professional contractors have the training and experience to safely complete your project.
- Warranty: Most professional concrete contractors will offer a warranty on their work. This gives you peace of mind knowing that the repairs are guaranteed to last.
How to Choose a Concrete Sidewalk Repair Contractor
If you decide to hire a professional concrete contractor for your concrete sidewalk repair project, it's important to choose a reputable and qualified company. Here are some tips for choosing a concrete sidewalk repair contractor:
- Get quotes from multiple contractors: Be sure to get quotes from at least three different contractors before making a decision. This will help you compare prices and services.
- Ask for references: Ask each contractor for references from past clients. Contact the references to check on the contractor's quality of work and customer service.
- Check for insurance: Make sure the contractor has liability insurance and workers' compensation insurance. This will protect you in case of any accidents or 1 injuries that occur during the project.
