The overlay material can be a simple mixture of sand and cement or it can actually be a real concrete mixture that includes small pieces of stone or even large stones depending upon the thickness of the overlay. Cement or concrete overlay thicknesses can range from 1/4 inch thick up to a full 2 inches or more.
How thin can concrete be poured over existing concrete?
You can pour as thin as 1.5 inches over the old concrete. The smallest rock size is about 3/8 inch. If you pour any thinner than 1.5 inches you don't have enough cement paste over and around the aggregate to get strong concrete. It'll end up cracking and breaking off if you pour it too thin.
What is the thickest you can pour concrete?
The minimum thickness for pouring concrete over concrete is 1.5 inches. In most cases, I don't like to pouring the new concrete less than 2 inches thick. Two inches of concrete (or more) that's bonded, gives you adequate strength for a wear surface, especially if you're driving over it.
Can you overlay existing concrete?
Fortunately, it is possible to place stamped concrete over existing concrete. Stamped concrete overlays are durable options for upgrading, repairing, and enhancing existing concrete.
How thick can you overlay concrete?
The overlay material can be a simple mixture of sand and cement or it can actually be a real concrete mixture that includes small pieces of stone or even large stones depending upon the thickness of the overlay. Cement or concrete overlay thicknesses can range from 1/4 inch thick up to a full 2 inches or more.
Can you overlay old concrete?
Applying a concrete overlay to an existing concrete surface, in good condition, will bring a new look, and feel. The overlay will work to fix minor cracking, and add strength and durability to the surface, while simultaneously giving you an opportunity to change the stamp pattern, color or finish.