Pour Concrete On Existing Concrete Floor

So here is a basic process for pouring your concrete floor. Sweep your existing floor clean from dirt and debris. The thickness of the slab is designed.

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This is because if the new layer is poured directly onto the existing slab the two slabs will bond together.

Pour concrete on existing concrete floor.

Measure the perimeter of the area to pour the concrete over the existing slab. If the slabs bond together any cracks or damage in the old surface will spread to the new surface. Normally you would jackhammer the old concrete out and do it right. However the building supports were placed directly on to.

You could drill holes into the existing concrete surface and insert steel pins and then the mesh on top. Prepare enough concrete to pour a 1 to 2 inch layer over the old floor. You can if the concrete is sound solid with minor cracks pitting scaling surface damage or just plain ugly. Depending upon the requirement of the preferred use of the slab and the loads coming upon the slab.

Pour a floating concrete floor. When i say bond the concrete you are lying on top off needs to be a rough finish like scabbled. Spread the new concrete over the surface filling the entire area within the form you created. Pouring concrete over existing concrete sidewalk when pouring new mix over old concrete make the mixture stiffer than usual by adding less water.

The cleaner it is the better bond you will achieve with the new concrete. When laying new concrete over an existing slab it s important to separate the two layers. Pouring concrete over an existing concrete driveway or sidewalk the same principles as above apply to pouring concrete over an existing concrete driveway or sidewalk. Let s assume that you re pouring over an existing cement floor and that there will be no height issues by your doors.

Clean your existing floor. The measurements acquired can then be used to estimate the amount of concrete required. If you are laying pouring concrete over existing concrete there needs to be a bond. In a concrete mixer add cement aggregate sand and water as directed on the concrete package instructions.

Over the years it had cracked. Smooth the surface using a two by four or float then add texture as desired using tools or a broom. Step 5 pour the concrete over the old floor and spread it over the surface with a rake. You just have to consider the added height.

We had a building that had an existing concrete floor that was poured directly on the ground.

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