I was walking around my neighborhood this week and passed a front yard with artificial grass that just looked off. The turf itself wasn’t great quality to begin with, so it already read as fake from the sidewalk. What really stood out, though, was how uneven the surface was, bumpy in some spots and sunken in others, like the ground underneath hadn’t been touched before the turf went down.
A lot of people take on artificial grass DIY installation themselves, usually with turf sheets picked up from Costco or Canadian Tire. For a small area, that can be a solid way to cut costs if it’s done right. Skip the wrong step, though, and a front or back yard can end up looking worse than the grass it replaced. For the general steps, our sister company GrandGrass has a good rundown of the installation process here. What I want to get into is one specific step, the one that yard was clearly missing, and the one people skip most often because it feels optional: the foundation.
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What the Foundation Actually Is
Before turf goes down on a job, the ground has to come out first. We excavate 4 to 6 inches of soil and replace it with a compacted layer of crusher dust. That’s the foundation, and on a larger yard, this step alone can take a full day before a single piece of turf gets laid.
There’s one common exception. If you’re installing over an existing hard surface like asphalt or concrete, this step usually isn’t needed, since the surface underneath is already flat, stable, and won’t shift on its own. A regular yard doesn’t have that advantage, so the ground still has to be prepped before anything goes on top of it.
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Why Skipping It Causes Problems
Soil isn’t flat or stable on its own. Without a compacted base holding it in place, it settles unevenly over time, and the turf on top follows every dip and bump right along with it. That unevenness is one of the fastest ways turf gives itself away as fake. Even good quality turf laid over a lumpy, sunken surface reads as artificial from a distance, because real grass doesn’t ripple like that.
Drainage runs into a similar issue, just underground instead of on top. Artificial turf backing is built with drainage holes so water can pass straight through it, but that only works if the water has somewhere to go once it gets past the turf. Laid directly onto native soil, that water hits ground that’s already dense and slow to absorb anything, so it backs up right underneath the turf instead of moving away. Crusher dust solves this by creating a loose, permeable layer between the turf and the soil beneath it, so water keeps moving down and away instead of sitting there. Skip the foundation, and that layer simply isn’t there, so the drainage problem shows up no matter how many holes the turf backing has.
Then there’s the edges. Turf gets pinned down with anchor nails around the perimeter and seams, and those nails need something solid to grip. In loose native soil, they don’t hold nearly as well as they do in a compacted base, so edges and seams tend to lift within a year or two instead of staying put.
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What We Ask First
When someone who handled their own artificial grass DIY installation comes to us saying it’s lifting at the edges, or that water isn’t draining even though the turf backing has holes built in for exactly that, we usually ask the same question first: was the foundation done before the turf went down? Almost every time, the answer is no, and that one step explains most of what’s gone wrong since.
If you’re planning your own install and want to get the foundation right, or you’d rather just have it done properly the first time, reach out and we can walk you through what your yard actually needs.