How Much Does a Concrete Slab Cost?
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The most common material used for a foundation for a building or home is the concrete slab. Most homes in the United States and many other areas of the world either use a concrete slab or raised foundation. A concrete slab is a familiar structural element of modern buildings, and these horizontal slabs of steel-reinforced concrete, typically between 4 and 20 inches thick, are most frequently used in constructing ceilings and floors, while thinner concrete slabs are used for exterior paving. Other common slab foundations types include brick, concrete block and stone. In very rare instances, treated lumber that is resistant to termites and decay, may be used. Overall, this foundation type is thought to last longer and is easier to maintain.
How much is it?
- On average, projects between 100 and 300 square feet cost around $800, while a 300 to 600 square foot job will cost about $1,300. Overall, the costs will depend on the area, contractor, size and thickness. To budget properly, plan on setting aside at least $3 to $5 per square foot.
- According to everything-about-concrete.com, they stated that the common things should add up to about $4 per square foot; however, if you add in thicker edges, a vapor barrier or styrofoam underneath the slab, the costs can increase by more than $1 per square foot.
What is going to be included?
- Concrete is typically used for building foundations; however, it is also a well-liked, practical, and attractive alternative for hardscape features. A concrete slab, the foundation of a building or house in construction, is made using concrete. This foundation is flat, uniform, at ground-level, and is not segmented. With no solid concrete slab, the entire house can become unstable, and its use can become problematic.
- In many industrial and domestic buildings, a thick concrete slab that is supported directly on the subsoil or on foundations is used to build the ground floor of construction. These slabs can either be suspended or ground-bearing slabs. In skyscrapers, thinner, high rise buildings, precast concrete slabs are slung in between the steel frames in order to form the ceilings and floors on each level.
What are the extra costs?
- You have to factor in the delivery charge of the concrete slab. If there are obstacles which prevent the concrete truck from easily accessing the area, you might have to hire a pump truck; that could easily cost another $300-$500, and the cost will depend on how long the operator and pump have to remain on site.
- Adding thicker edges, a vapor barrier or wire mesh can increase the price per square foot.
- You need to consider excavation expenses. With a shovel, you can dig the soil out in order to pour a small concrete slab, or you can lease a skid-steer from a construction rental-store for about $150 to $300 per day if you were to do it on your own.
- The cost for pouring a concrete slab takes a big leap in case you hire the professionals, who charge at $30 per worker hour. If you want to hire a professional, use HomeAdvisor.com to receive a few free quotes in your area.
- You can rent the majority of the tools required to pour a slab from a rental store at a fraction of the cost necessary to purchase them. Concrete tools, which include a bull float, concrete broom, a stinger vibrator, hand trowels and screed frequently rent as a set for around $35 and $100 a day. Power trowels, necessary in case the concrete pour is larger than 12 ft by 12 ft, adds another $40 to $70 to the rental cost.
Tips to know:
- Buy enough to frame around the concrete slab perimeter and have enough stakes for securing the concrete forms every two feet. A typical four-inch thick concrete slab needs steel reinforcement. As for most slabs, 1/2-inch rebar-bars, spaced 2-feet apart within a cross grid pattern, offer adequate reinforcement.
- The importance of concrete slabs cannot be overstated. This is the one part of the house that will bear the weight of everything placed on top it. It also protects the wood and other building materials from elements which may compromise their function, like moisture and insects. Besides, it will lay out the home dimensions.
- When building concrete slab, a couple of steps have to be taken prior to pouring of the concrete. In order to prevent cracks, the earth underneath it needs to be compacted very well. In addition, sand and gravel is typically placed down between the concrete and earth to protect the foundation from moisture.
How can I save money?
- Since there’s a good chance you’re going to hire the professionals, make sure that you get at least three quotes before proceeding.
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