Does ground have to be level for artificial grass?

Well, this is a very good question. We will recommend the ground or prepared base to be smooth and compacted, but not necessarily leveled. People install artificial grass on slope areas all the time, so ground doesn't have to be level for installations. Actually sloped areas can be a good thing for some installations as it will drain water side ways, in certain cases of slopes to be steep, you might not need much of sub base to be built for the drainage concerns as water will fallow the slope the runs away. However, regardless the level or slope grounds, you always need to have the ground or sub base to be smooth and properly compacted for artificial grass installations.