The cost of pouring a concrete slab ranges from $6 to $12 per square foot, depending on its thickness, size, and intended use. Concrete patios are typically 4 inches thick and can have a basic broom-swept finish or more elaborate colors, stamping, and designs.

Concrete slab garage floors, driveways, and foundations are typically 6 inches thick and require wire mesh or rebar reinforcement to withstand the weight of vehicles or a house.

Concrete slabs are flat, horizontal surfaces that can be used to pave outdoor areas or support the weight of vehicles or buildings. Most homeowners use concrete slabs for patios, driveways, garages, or home foundations. They are a popular choice for outdoor paving because they are durable and easy to maintain. They are also resistant to fire and water damage.

Concrete slabs can be poured on-site or pre-cast in a factory. Poured concrete slabs are more expensive, but they offer more flexibility in terms of size and shape. Pre-cast concrete slabs are less expensive, but they are limited in terms of size and shape.

A builder or concrete contractor pours a concrete slab. A skilled DIYer can pour a concrete slab for a small patio but larger slabs for a garage or home are best left to a skilled tradesperson. They have the knowledge, experience, and tools to ensure the slab is poured correctly and to the highest standard.

Concrete slabs last 30 to 50 years or over 100 years when properly sealed and maintained. Concrete may crack in cold climates where the ground freezes regularly. Driveways and patios are exposed to the elements and typically have shorter lifespans than foundations or garage floors that are more protected.

Poured concrete dries in states. In the first day or two it is dry enough for a person or pet to safely walk on the surface without leaving footprints. After a week or two, the concrete is hard enough to drive on. After a month or two the concrete is completely dry and considered fully cured.

• Ask these questions to narrow down the list of qualified concrete slab contractors on HomeGuide:
• How long have you been pouring concrete?
• Do you have pictures of similar concrete work you’ve done?
• Will you provide a line-item estimate?
• What site preparation will my project require?
• How much concrete will I need for this project?
• Do you recommend using a pre-cast slab or pour it on site?
• How thick does the concrete need to be for my patio?
• Will you need to reinforce the concrete with rebar?
• What does it cost to demolish an existing concrete slab?
• What options do you offer to seal, stain, or stamp the concrete? 
• How long does it take concrete to be fully cured?
• What kind of maintenance does concrete require?
• Do you offer a warranty on the materials and labor?

Before hiring a concrete slab contractor, be sure to follow these recommendations:

• Get at least three local quotes to compare.
• Be sure the quotes include all site prep and cleanup costs.
• Look for a licensed, bonded, insured company with 5+ years of concrete experience.
• Pick from contractors with excellent reviews on HomeGuide and Google.
• Avoid the lowest quotes which can indicate poor low quality work.
• Get an itemized quote and contract in writing before starting the project.
• Do not pay in full or in cash before the job is complete.