You need to start with a clean surface and ensure a proper bond to create a new concrete surface that lasts.
Can concrete be poured on existing concrete.
Perhaps you want a new concrete floor for your garage but you don t want the expense of having the existing floor removed.
It is a good option if you need to fill a large area with something thick that will last a long time.
Sweeping dirt s debris over the existing concrete slab will allow bonding to take place.
Pouring concrete over existing concrete sidewalk or patio surfaces is an option if the existing base is structurally sound.
New concrete is commonly poured over old concrete which may have been damaged for any reason for repairing purpose.
You just have to consider the added height.
Concrete over concrete by.
Coarse concrete has gravel or larger stones as an additive.
One of the best tools that can be clean all the debris out of crack is a stiff bristle broom.
This type of concrete is stronger but less dense so you can safely pour a large slab onto existing concrete.
Steps involved in pouring concrete over existing concrete slab step 1.
You can if the concrete is sound solid with minor cracks pitting scaling surface damage or just plain ugly.
Whatever the reason you can pour a new concrete floor over existing concrete doing this will save you both time and money.
There are situations when pouring new concrete isn t the most suitable option.
For instance surfaces with larger cracks heaving or settling conditions or where height cannot be raised replacement is a better solution.
However this approach is not suitable option unless the existing concrete is in good shape structurally.
This includes removing sand dead leaves and gravel.
However in most cases you can pour a new layer of concrete onto the existing one.
Engineer if you are laying pouring concrete over existing concrete there needs to be a bond.
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.
Cleaning old concrete surface.
Concrete surface suffers from wearing and damages over time disregard of its strength.
When i say bond the concrete you are lying on top off needs to be a rough finish like scabbled.