Alternatively, do some research on concrete-safe chemicals that help lift the paint so you can scrape it off. ![]() Technically, existing concrete could be covered with a layer of concrete only a few millimeters thick, which is called a screed. When existing concrete is severely damaged, with large cracks going through the structure, you need to completely tear it off and replace it.įinish the work by priming the surface and pouring a mixture onto it, giving your concrete base a fresh new layer. Yes, you can put new concrete on top of old concrete as long as there are no problems such as significant cracks or frost elevations with existing concrete. ![]() If you ripped out old concrete and replaced it with new, well-poured concrete, you could save yourself a lot of trouble by maximizing the life of your concrete. If you simply pour new concrete on it and it doesn't fix the problem, the same thing will most likely happen to new concrete. If you can pour new concrete over old concrete, you probably want to know the risks you would take in doing so. The simple answer is YES, new concrete can be poured over existing concrete. For an unbonded overlay, add your interlayer so that the top surface is level. ![]() For a glued layer, apply a bonding agent.
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