Can you put concrete OVER grass lawn?

No, you cannot put concrete directly over a grass lawn. Concrete needs a solid, stable foundation to properly set and cure, and grass and soil do not provide that. Grass and soil are too soft and uneven to support the weight of concrete, and they can also contain organic matter that can interfere with the concrete's bonding.

To properly pour concrete over a lawn, you would first need to remove the grass and soil down to the underlying subgrade. This can be done by hand, with a sod cutter, or with a power tiller. Once the grass and soil have been removed, you would need to level and compact the subgrade to create a solid foundation for the concrete. You may also need to install a vapor barrier to prevent moisture from seeping up from the ground and causing damage to the concrete.

Only after you have properly prepared the subgrade can you pour the concrete. Be sure to follow the manufacturer's instructions for mixing and pouring the concrete. Once the concrete has been poured, you will need to finish it by troweling or stamping it to create the desired surface texture.

The entire process of preparing the subgrade and pouring the concrete can be time-consuming and labor-intensive, so it is important to weigh the pros and cons before deciding whether or not to concrete over your lawn.