Almost every synthetic grass complaint we get called out to fix comes down to the same thing: somebody rolled turf over dirt. The green part is the easy part. What decides whether a turf lawn still looks right in year five is everything underneath it.
Excavation. The existing grass, roots and soft topsoil have to come out — typically three to four inches, more if there is organic material in the way. Turf laid over old lawn will settle unevenly as what is beneath it decomposes, and you get a lumpy field that no amount of brushing fixes.
The base. A draining aggregate goes in and gets plate-compacted in lifts, not dumped and raked flat in one pass. Compaction in lifts is what stops settlement later. The base also gets graded, because turf does not absorb water — it passes it through, and whatever is under it has to carry that water somewhere. Get this wrong in Phoenix and the first real monsoon puts a puddle in the middle of the lawn.
Weed barrier. A fabric layer under the full field stops anything coming up through the backing. It is inexpensive and it is not optional.
Seams. On any yard wider than a roll, there will be a seam. Done properly it is glued and nailed on a seam tape with the blade direction matched on both sides, and you cannot find it. Done badly it shows as a line down the lawn forever and eventually opens.
Edges. Every perimeter has to be anchored — nailed into the base, tucked against a paver border, block wall or concrete curb. Loose edges are the single most common turf failure, and they are the one your dog will find first.
Infill. Silica sand or a coated infill is spread across the field and power-broomed in. This does two jobs: it stands the blades up so the lawn reads like grass instead of carpet, and it ballasts the turf so it stays put. Skipping or skimping on infill is why some installs look flat and shiny within a season. Pet installs get a deodorizing infill instead.
Done this way, a turf lawn in the Valley needs nothing but the occasional rinse and a brush of the high-traffic paths. No watering, no mowing, and it is green in August.
German LLC installs synthetic grass across Phoenix and the surrounding Valley cities. Call (480) 287-4751 for a free measurement and a written estimate.