What to Expect During a Concrete Demolition Project

A concrete demolition project can feel overwhelming if you have never been through one before. Understanding the process, timeline, and what each phase involves will help you prepare your property, set realistic expectations, and ensure the work goes smoothly from start to finish.

Why Concrete Demolition Becomes Necessary

There comes a point when repairing old concrete is no longer practical. Severe cracking, widespread settling, structural failure, or simply the need to reconfigure a space can all make demolition the most sensible path forward. Whether it is a deteriorating driveway, a crumbling patio, a damaged foundation section, or an outdated commercial slab, removing the old concrete properly sets the stage for whatever comes next.

At TurnKey Concrete Team, we handle demolition projects of all sizes across Greater New Orleans. From a small backyard slab to large-scale commercial tearouts, the process follows a logical sequence that keeps the project safe, efficient, and on budget.

Phase 1: Site Assessment and Planning

Every demolition project begins with a thorough evaluation of the site. Our team inspects the concrete to determine its thickness, whether it contains reinforcement like rebar or wire mesh, and how it connects to adjacent structures. We also check for utilities running beneath or through the concrete, including water lines, gas pipes, electrical conduit, and drainage systems.

This assessment phase is critical. Cutting into an unmarked gas line or damaging an active sewer connection can create dangerous situations and expensive repairs. We coordinate with utility companies and use locating services to map everything before any equipment arrives on site. Planning also includes determining access routes for heavy machinery, identifying where debris will be staged, and establishing safety zones around the work area.

Phase 2: Permits and Preparation

Depending on the scope of the project and local regulations, demolition work may require permits from the city or parish. Commercial demolition almost always requires permitting, and even residential projects may need approval if the work involves a foundation, if it is in a historic district, or if it exceeds a certain square footage. Our team handles the permitting process so you do not have to navigate municipal offices on your own.

Preparation also involves protecting surrounding areas. We lay down protective materials over landscaping, driveways, and adjacent concrete that will remain in place. Fencing or barriers may be set up to keep the work area secure, especially on properties with children, pets, or public foot traffic.

Phase 3: The Demolition Process

The actual demolition phase is where the heavy work happens. The methods and equipment used depend on the size, thickness, and location of the concrete being removed.

Hydraulic breakers mounted on excavators are the workhorses of most demolition projects. These powerful attachments deliver repeated high-energy impacts that fracture concrete into manageable pieces. For large slabs and thick foundations, excavator-mounted breakers can process significant volumes of material quickly.

Jackhammers (handheld pneumatic or electric breakers) are used for smaller areas, tight spaces, and detail work where precision is more important than speed. Interior demolition, sidewalk removal, and work near sensitive structures often relies on jackhammers because operators have direct control over where force is applied.

Concrete saws are frequently used before breaking begins. Saw-cutting clean perimeter lines around the demolition area prevents cracks from spreading into adjacent concrete that needs to stay intact. This combination of cutting and breaking produces the cleanest results. For more on how the full process of old concrete removal works, our article on efficient concrete removal in New Orleans covers the details.

Phase 4: Rebar and Reinforcement Handling

Most structural concrete contains steel reinforcement. As sections of concrete are broken away, the exposed rebar needs to be cut and separated from the debris. This step is important for two reasons: it makes the concrete pieces easier to handle and load, and steel is recyclable. Separating metals from concrete waste is both environmentally responsible and often required by disposal facilities.

Post-tension cables, which are found in some modern slabs and parking structures, require special attention. These cables are under extreme tension and must be de-tensioned by a qualified technician before any demolition begins. Cutting a live post-tension cable is extremely dangerous and can cause the cable to whip violently.

Phase 5: Debris Removal and Hauling

Once the concrete is broken up, the debris needs to be loaded and hauled away. Depending on the project size, this may involve a skid steer loading a single dump trailer or multiple trucks making repeated trips to a disposal or recycling facility.

Concrete is one of the most recyclable construction materials. Crushed concrete is commonly reused as road base, fill material, and aggregate for new concrete production. Whenever possible, we direct demolition debris to recycling facilities rather than landfills, which reduces environmental impact and can lower disposal costs.

For projects that are specifically focused on getting old concrete off your property, our concrete removal service handles everything from breaking to hauling.

Phase 6: Site Cleanup and Grading

After all debris is removed, the site needs to be cleaned and graded. This means removing any remaining small fragments, smoothing the exposed subgrade, and addressing any drainage issues that were uncovered during demolition. If new concrete will be poured, proper grading and compaction of the subbase are essential to prevent future settling.

A clean, well-prepared site is the foundation of any successful new pour. If you are planning to replace the demolished concrete with a new slab, timing the demolition and new installation as a continuous project is the most efficient approach.

Timeline: How Long Does Demolition Take?

Project timelines vary based on size, complexity, and site conditions. Here are some general guidelines:

• A residential driveway or patio removal typically takes one to two days, including hauling.
• A foundation section or large slab may take two to four days.
• Commercial demolition projects can range from several days to a few weeks depending on the structure and volume of material.

Weather can also affect timelines. Heavy rain saturates soil and makes it difficult to operate heavy equipment safely. In the New Orleans area, scheduling around weather patterns is a practical reality that experienced contractors plan for. Our guide on the best time of year for concrete work in Louisiana offers helpful seasonal insight.

Costs and Factors That Affect Pricing

Demolition pricing depends on the volume of concrete, its thickness, whether it is reinforced, accessibility for equipment, hauling distance to disposal sites, and any permit fees. Reinforced concrete costs more to demolish because cutting rebar adds time and wear on equipment. Limited access sites where large machinery cannot reach require more manual labor, which increases the cost.

The best way to get an accurate estimate is to have a contractor visit the site and evaluate the specific conditions. We also wrote about the broader picture of demolition considerations in our post on when and why to consider concrete demolition.

If you have concrete that needs to come out, our TurnKey Concrete Team demolition service handles the entire process. And for projects involving replacement work after demolition, our paving options guide can help you plan what comes next.

Ready to start planning? Contact us or call 504-294-3820 to schedule a site visit and get a detailed estimate.

Frequently Asked Questions

Do I need a permit for concrete demolition?

It depends on the scope and location of the project. Commercial demolition and work involving foundations typically require permits. Residential projects may or may not need one depending on local regulations. Your contractor should handle the permitting process or advise you on what is needed.

Will demolition damage my landscaping or adjacent concrete?

Professional crews take precautions to protect surrounding areas, including laying down protective materials and saw-cutting clean borders. Some minor impact to adjacent landscaping is possible with heavy equipment, but an experienced team minimizes this through careful planning and equipment selection.

Can old concrete be recycled?

Yes, concrete is highly recyclable. It is commonly crushed and reused as road base, backfill, and aggregate for new concrete. Recycling reduces landfill waste and can lower disposal costs compared to dumping at a traditional landfill.

How much noise should I expect during demolition?

Concrete demolition is loud, especially when hydraulic breakers and jackhammers are in use. Noise levels typically range from 90 to 120 decibels at close range. Most residential demolition takes place during daytime working hours to comply with local noise ordinances. Neighbors should be notified in advance as a courtesy.

What happens to the ground after the concrete is removed?

After debris is hauled away, the exposed subgrade is graded and cleaned. If new concrete will be poured, the soil is compacted and prepared as a base. If no new pour is planned, the area can be graded for drainage and finished with gravel, sod, or other ground cover.

Is it cheaper to demolish and replace or to repair damaged concrete?

It depends on the extent of the damage. Minor cracking and surface issues are almost always cheaper to repair. But when damage is widespread, the slab is severely settled, or the subgrade has failed, demolition and replacement often costs less in the long run than repeated repairs that do not last.