Can You Pour Concrete Over Existing Concrete Driveway

In most cases the answer is yes. If the new concrete is 3 inches thick or more you don t have to bond the new concrete to the old concrete. For instance surfaces with larger cracks heaving or settling conditions or where height cannot be raised replacement is a better solution.

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By the way it will take you much longer to break up two layers of poured concrete in the future cost you more if someone else does it and the work put in the second slab will be a total waste.

Can you pour concrete over existing concrete driveway.

My rule of thumb is this. Coarse concrete has gravel or larger stones as an additive. However in most cases you can pour a new layer of concrete onto the existing one. Pouring over old concrete need similar basic formworks that employed with fresh pours.

If the slab runs up to a door the raised surface may not provide the necessary clearance for the door to open. If the existing concrete is structurally sound is not heaving or settling then you can pour concrete over concrete. The form shall extend above existing concrete surface based on the designated thickness of the new concrete. For a walkway raising the level by several inches can throw off its alignment with the driveway steps or another structure.

This type of concrete is stronger but less dense so you can safely pour a large slab onto existing concrete. Pouring a new layer of concrete over an existing walkway patio or porch will raise the level by several inches. There are situations when pouring new concrete isn t the most suitable option. But there s some things you have to take into consideration before you make a final decision.

If the slab runs up to a door the raised surface may not provide the necessary clearance for the door to open. Is the existing concrete structurally sound. So fyi can you pour new concrete on top of old yes but it will not solve your problem and look nearly the same as the old concrete in a short period of time. It is a good option if you need to fill a large area with something thick that will last a long time.

Disadvantages of pouring new concrete over existing concrete. Make sure that the height of the formwork is even. Pouring a new layer of concrete over an existing walkway patio or porch will raise the level by several inches. The simple answer is yes you can pour new concrete right over existing concrete.

Install the form usually wood form around the perimeter of old concrete surface.

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