Plan on $0.50 per square foot for Styrofoam insulation.Ī vapor barrier is another material that prevents moisture from entering a concrete slab. It can also keep water away from the slab. Since as much as 10% of the heat can be lost through your home's floor, insulating the concrete can save you money on your heating bills. Styrofoam provides insulation for concrete floors and helps create an energy-efficient space. Wire mesh adds $0.35 per square foot to the cost of your concrete slab. Both these options will make your concrete slab stronger and help prevent cracks from developing. If you're looking for a cheaper alternative, wire mesh is more affordable and is also becoming common for home driveway projects. Note that this price has been increasing due to nationwide supply shortages. On average, the selling price for rebar is between $1.40 and $1.85 per foot of material. To help reinforce the structure of concrete slabs that are more than 4 inches thick, you may want to add rebars. Materialsīesides the concrete itself, your project may require additional materials to add reinforcement or control moisture and temperature. For a 4-inch aggregate base, expect to pay $65 per cubic square foot. The climate, soil conditions, and the purpose of the concrete slab will determine whether and what type of base is needed. The base is usually a crushed stone material like gravel, but sand can be used in some instances. Its role is to reduce slab cracking, reduce settlement, and promote drainage. In concrete construction, the base is the layer between the soil and the concrete slab to act as a support. A slab with thicker edges, from 2 feet to 12 feet, will cost an additional $1 to $2 per square foot. For example, concrete poured for a foundation will be thicker around its edges to hold up the walls. Slabs that are 6 inches are used for residential and commercial building foundations, while 8-inch slabs cost about $7 per square foot and are commonly used on concrete driveways that need to withstand the weight of heavy vehicles.Ĭreating thicker edges is also an option to provide reinforcement. At 4 inches thick, you’re looking at an average cost of $5.35 per square foot, while at 6 inches thick, you’re looking at $6.20 per square foot. The average concrete slab is between 4 and 6 inches thick. That being said, thicker slabs are stronger and more durable, meaning they’ll last longer. The thicker the concrete slab, the more you should expect to pay, as thicker slabs require more materials and labor. We’ll discuss prices for various concrete projects in a later section. In general, the labor cost to pour concrete is about $45 per hour, or around $2.50 per square foot. Each job requires specialized expertise and equipment, from demolition work to prep reinforcement to edging. Slab flatwork, or pouring the concrete, is messy and complicated work. Next, we’re going to look at the variables that can affect the cost of concrete slabs: Remember that while the concrete slab itself may not require a permit, you may need one for the overall project. For example, there may be thickness and reinforcement requirements that could affect the total price. When you calculate what you’ll need for your project, multiply the length of your project by the width to find the square footage, and add 10% to account for spills and other losses.Īs you begin planning, check with your local and state building codes as different projects can have different requirements. Resource CenterĬoncrete slabs usually cost between $4 and $8 per square foot. Find hiring guides, material costs, expert advice, how-to's and more.
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