Every great artificial grass installation starts with a demolition. Before a roll of turf touches your yard, the existing lawn, roots, and a layer of soil have to come out, and how thoroughly this is done shapes how the finished lawn drains, sits, and resists weeds. Here is how removing an old lawn is done properly, and why cutting corners here shows up years later.
Why the Old Lawn Must Go
It is tempting to imagine laying turf right over an existing lawn, and some low-budget jobs try it. The results are poor. Living grass left underneath decomposes unevenly, leaving dips and soft spots. Its roots and seed bank feed future weeds. And without excavation there is no room for the compacted aggregate base that gives synthetic turf its drainage and firmness. Removing the old lawn is not optional prep; it is the foundation of everything that follows.
Stripping the Sod
The first step is removing the top layer of turf and thatch. For small areas this can be done with a spade, cutting the sod into strips and rolling them up. For larger yards, a sod cutter, a machine that slices under the grass at a set depth, makes quick, even work of it. The goal is to lift off the living grass and the dense root mat just below the surface.
- Small yards: a sharp spade and effort, cutting sod into manageable strips.
- Larger yards: a rented or contractor sod cutter for speed and consistency.
- Dispose responsibly: old sod is heavy; plan for haul-away or green-waste disposal.
Dealing With Roots and Persistent Grasses
Some California lawns, particularly aggressive spreading grasses like Bermuda, regrow from bits of root left behind. For these, stripping the sod may not be enough on its own. Options include excavating deeper to remove more of the root zone, or allowing time for any regrowth to be cleared before the base goes down. Because the finished base and weed barrier will sit on top, thorough root removal now prevents a spreading grass from testing the edges of your new lawn later. A professional installer will recognize which grasses need this extra attention.
Excavation Depth
After the sod is gone, the yard is excavated to make room for the base and turf so the finished surface sits flush with surrounding hardscape. The right depth depends on the base design and drainage needs, but a typical residential excavation removes several inches of soil, commonly in the range of three to four inches, to accommodate the aggregate base plus the turf thickness. Excavating to a consistent depth is what lets the installer build a level, well-draining base rather than fighting an uneven starting grade.
Getting the Grade Right
Excavation is also the moment to establish drainage fall. On flat lots, the installer shapes a slight slope away from the house and toward drains or yard edges so water moves where it should. Getting this grade right during dig-out is far easier than trying to fix drainage after the turf is down. Our crews handle grade and drainage as part of every install; see our services.
Preparing the Soil and Base
With the yard excavated to depth and graded, the exposed soil is compacted to create a stable subgrade. A weed barrier fabric goes down next to block anything below from growing up, followed by the aggregate base, crushed rock topped with a finer material, which is spread, leveled, and compacted in layers. This compacted base is the true foundation of the lawn, providing drainage, firmness, and a smooth surface for the turf. Skipping compaction or thinning the base to save money is the leading cause of lawns that ripple or sink within a year.
Handling Sprinklers and Utilities
Removing a lawn is also the time to deal with what is buried in it. Existing irrigation can be capped off, since synthetic turf needs no watering, though many homeowners keep a line or two for adjacent planting beds or a quick rinse bib. Mark and protect any shallow utility lines, and note the location of valves and drains before excavation begins. Addressing these during demolition avoids surprises and rework once the base is being built.
DIY or Professional Removal?
Lawn removal is the most physical part of a turf project, and it is where many DIY installs stall. Stripping sod, hauling heavy debris, excavating to an even depth, and compacting a base are demanding, equipment-dependent tasks. A small, flat yard can be a reasonable weekend project for a fit and determined homeowner. Larger yards, aggressive grasses, drainage challenges, and anywhere the finished look really matters are usually better handled by a crew with the right machines and experience. You can learn about how we work on about us.
Frequently Asked Questions
Can I lay artificial grass over an existing lawn?
It is not recommended. Living grass underneath decomposes unevenly and feeds weeds, and there is no room for a proper compacted base. The old lawn should be stripped and the yard excavated so a draining, firm base can be built.
How deep do you dig for artificial grass?
Excavation depth varies with the base design, but a typical residential dig removes several inches of soil, often around three to four inches, to fit the aggregate base plus the turf so the finished surface sits flush with adjacent paving.
How do I stop old Bermuda grass from coming back?
Aggressive grasses regrow from root fragments, so thorough removal matters. Excavating deeper to take out more of the root zone, combined with a quality weed barrier and compacted base, keeps them from re-establishing under the new lawn.
Start Your Project on a Solid Foundation
We handle lawn removal, excavation, and base preparation so your artificial grass sits on a foundation built to last. Call 877-692-5349 or get a free quote and let our crew do the heavy lifting.