Readers ask: How To Build A Concrete Floor For A House?

How thick does a concrete slab need to be for a house?

Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. To prepare the base, cut the ground level to the proper depth to allow for the slab thickness.

Can I put concrete floors in my house?

It’s not just for sidewalks; concrete is a stylish choice for indoor floors. Its surface can be finished in various ways—with colors, stains, and aggregates—and given a textured surface or buffed until glassy. Concrete floors are extremely durable and easy to clean, and they resist water when properly sealed.

Can you pour concrete directly on dirt?

Long story short, yes you can pour concrete over dirt.

How many bags of concrete do I need for a 10×20 slab?

A 60-pound bag yields. 017 cubic yards, and an 80-pound bag yields. 022 cubic yards. For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags.

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Do I need gravel under concrete slab?

Because concrete is a very porous material, it will absorb any moisture that it contacts. This can cause pooling. Without crushed stone, pooling water will settle under it and erode your slab. Adding a layer of crushed stone will add proper drainage, as well as create a barrier between your slab and the ground.

Does concrete flooring crack?

Cracking: Like it or not, even expertly installed concrete may develop cracks over time. That’s because the large expanse of a slab has to endure changes in temperature, moisture and settling.

Is concrete floor cheaper than tile?

Tile will usually cost under $5 per square foot which means in many cases, tile will either be cheaper than concrete or hover right around the same price. Of course, with higher quality materials comes a higher price tag but people expect that. In general, concrete and tile should cost you about the same.

Can I pour concrete over existing concrete?

If done properly, new concrete can often be poured right over an existing slab. For this to be feasible, the contractor needs to pour at least 2 inches thick, use smaller aggregate, and incorporate reinforcement such as welded wire mesh or fiber mixed into the concrete.

Do concrete floors save money?

A sealed and properly maintained concrete floor can last indefinitely. Even in commercial applications, concrete can survive under high-traffic conditions for many decades. Over the long run, this can save you a considerable amount of money and effort over replacing flooring every few years.

Is concrete floor cheaper than wood?

It is possible for a “fancy” concrete floor to be more expensive than an economical hardwood floor. In general, a tight budget will find concrete floors more budget-friendly, but it depends on the design and finish of the concrete floor.

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Do concrete floors get cold?

Are concrete floors cold and damp? Concrete can be cold, but no more so than ceramic tile or natural stone flooring.

Should I put plastic under concrete?

Recently, though, research has shown that the old traditional layer of 6-mil Visqueen (polyethylene plastic) under the slab is seldom effective for two main reasons: Although it may seem water-tight, this grade of material allows a lot of water vapor to pass through.

Do you need rebar for 4 inch slab?

No, you do not need rebar for a 4inch slab of concrete on grade. A 4inch-thick slab cast on the ground and in permanent contact with it will float and rebar is not required. Rebar is recommended on concrete measuring 5 – 6 inches thick.

Is sand a good base for concrete?

Pour concrete over a solid, well-drained base



of sand or gravel over clay and other poorly draining soils to provide even support.

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