What options can affect a concrete overlay cost? First is the size of the project. The larger it is the lower the cost per square foot.
Next is whether there is anything on the floor that has to be removed before we start the overlay process. This can include paint, sealer, tile, etc.; anything that might prevent the skim coat material from bonding tightly to the concrete needs to be removed.
Another factor to consider is whether the existing concrete floor has an exposed aggregate finish (one with the stones visible and sticking out of the surface). If it does then it will take more material to fill in the space between stones and that will affect the concrete overlay cost.
What about cracks? If there are visible cracks then we need to fill them in before applying the overlay so that there is a reduced possibility they will reappear.