Artificial grass installation in Port St. Lucie depends on three things that most homeowners never see: the infill that holds the turf up, the base underneath it that lets water drain away, and the finishing details that keep seams tight and edges clean. This guide walks you through each layer, explains what happens when any one of them fails, and shows you what to ask for in writing before work begins. Whether you are replacing a lawn that has died in the heat and shade, creating a dog area that will not turn to mud, or preparing a yard for a sale or event, understanding what goes under the turf will help you spot the difference between a real installation and a shortcut.
Port St. Lucie's flat sandy soil and shallow water table mean that drainage is not optional, and the long hot humid summers with afternoon thunderstorms most days put every yard to the test. This guide is for homeowners in Port St. Lucie and the surrounding areas who want to know what a proper installation looks like, why it costs what it does, and how to verify that the work has been done right.
Turf Infill Options: Silica, Coated Sand, Zeolite and Envirofill
Infill is the material that sits on top of the turf backing and between the fibres. It serves four purposes: it props the grass fibres upright so they look and feel natural, it protects the backing from ultraviolet light, it adds weight so the turf stays in place in wind, and it helps water drain through the system. The most common infill is silica sand, a basic ballast that has been used in artificial turf for decades. Silica is affordable and effective, but it is angular and can feel coarse underfoot, and it does not address odor or heat.
Coated sand infills round the grain, soften the feel, and often add color to match the turf or blend with the landscape. They cost more than plain silica but are gentler on bare feet and pets. Zeolite is a porous mineral that absorbs moisture and odors, making it popular for pet turf and dog runs. Antimicrobial and cooling coated infills, such as those sold under the name Envirofill, add treatment to reduce odor and lower surface temperature. These specialty infills cost more but are worth considering in areas with heavy pet use or where heat is a concern. Crumb rubber, made from recycled tires, is standard for sports and athletic turf because it provides cushioning and impact absorption; it is not typically used in residential yards. The right infill depends on the use: a residential yard may call for coated sand, a dog area for zeolite, and a play surface for a specialty product chosen for safety and performance.
How Much Infill Artificial Grass Needs, and Why
Infill is specified in pounds per square foot, and this number matters more than most homeowners realize. The amount of infill determines how well the turf stands up, how much protection the backing gets from the sun, and how well water drains through the system. Too little infill is a common shortcut in cheap installations: the turf may look acceptable at first, but the fibres flatten, the backing degrades faster, and drainage suffers. Most residential turf products call for between 1.5 and 3 pounds of infill per square foot, depending on the pile height, face weight, and intended use. A pet turf installation may need more infill to handle traffic and odor control, while a putting green may need less because the grass is shorter and the use is lighter.
You should always ask for the infill amount in writing as part of your specification. Do not accept a vague promise that the installer will use the "right amount." The spec should name the infill type, the pounds per square foot, and how it will be spread and settled. After installation, you can verify that infill is present by brushing the turf back and seeing the backing; if you can easily see through to the base, there is not enough infill. The installer should power broom the turf after infill is laid to settle it evenly and stand the fibres up, and this step takes time and equipment that a quick job will skip.
What to Put Under Artificial Grass for Drainage
Before artificial grass goes down, the ground underneath must be prepared to handle water and support the turf. The first step is removal: any existing lawn, old turf, roots, and debris must come out. Once the area is clear, excavation begins. The depth depends on the base material and the site, but typically you are aiming to set the finished turf level with surrounding hardscape, patios, or walkways so water does not pond at the edge. A weed barrier is laid in some situations, particularly if the soil is poor or weeds are a known problem, but it must allow water to drain through. On top of that goes the base layer, usually decomposed granite or crushed base rock, which is then compacted in lifts with a plate compactor. This base is the foundation of the whole system: it must be firm, sloped away from the house and pool, and deep enough to support foot traffic without settling.
For residential yards, patios, and pool surrounds, an optional draining underlay or pad may be installed on top of the compacted base. This layer adds comfort underfoot, helps with drainage in heavy rain, and is especially useful in pet areas where odor control matters. The turf is then laid on top and secured at the edges. On hard surfaces like concrete or a balcony, the approach is different: turf should never be glued flat to a slab that can hold water. Instead, a draining underlay or pad is installed first, and the edges are sealed or drained so water runs off rather than pooling underneath. This detail prevents water from being trapped, which causes odor, mold, and backing failure.
Base Prep on Port St. Lucie Soil: Excavation, Base Rock and Compaction
Port St. Lucie's soil is fast-draining grey sand over a shallow water table, which means it has good natural drainage in most places but can pond in low corners after a downpour. When you excavate for artificial grass, you are creating a new base that must drain better than the native soil. The typical approach is to excavate three to four inches, remove any clay or compacted layers, and replace the soil with decomposed granite or crushed base rock. This material is angular, compacts firmly, and allows water to flow through it quickly. The base is then compacted in lifts, usually two to three inches at a time, using a plate compactor or power tamper. Each lift is compacted until it is firm and does not move underfoot. An uncompacted base is the source of many failures: dips and soft spots develop under foot traffic, puddles form in low spots, and odor builds because water does not drain away fast enough.
Grading is part of base prep and is often overlooked. The finished base should slope gently away from the house and away from any pool or structure so water runs off rather than collecting. In Port St. Lucie's flat terrain, this slope is subtle, often just one-quarter inch per foot, but it matters. If your yard has a real water problem, such as standing water after rain or a high water table that keeps the ground wet, drainage must be addressed before turf goes down. This might mean installing a French drain, regrading the yard, or in some cases, deciding that artificial grass is not the right solution. We will evaluate the site and let you know if drainage work is needed first or if the installation should not proceed.
Artificial Grass Drainage and Underlay: Perforated vs Fully Permeable
Artificial grass itself drains quickly, but only if the turf backing and base underneath are designed to let water through. Turf backing comes in two types: perforated, with small holes punched through, and fully permeable, which allows water to flow through the entire backing material. Drainage rate is measured in gallons per hour per square foot. A perforated backing might drain at 15 to 20 gallons per hour per square foot, while a fully permeable backing can drain much faster. In Port St. Lucie, where afternoon thunderstorms dump heavy rain in short periods, drainage rate is tested in real conditions. A pet turf area with heavy traffic and frequent use needs fast drainage to prevent standing water and odor. A patio or pool surround also needs drainage because water from rain or pool splash must not sit underneath the turf.
The backing is only part of the story. A fast-draining turf on a poorly prepared base will still fail. If the base is compacted unevenly, or if it is clay or native soil that does not drain, water will pool under the turf no matter how permeable the backing is. This is why the base preparation matters as much as the turf itself. On hard surfaces such as concrete, pavers, or a balcony, an underlay or pad designed for drainage should be installed under the turf so water does not get trapped between the turf and the hard surface. The edges must also be detailed so water can drain away at the perimeter. When you ask for a spec, ask for the backing type and drainage rate in writing, and ask how the base will be prepared to drain. The installer should be able to explain the whole system, not just the turf.
Seams, Nails, Edging and Power Brooming
The details that separate a professional installation from a quick job happen at the seams, edges, and perimeter. Seams are joined with seam tape and a polyurethane or latex adhesive applied to both sides of the backing. The grain of the turf (the direction the fibres lean) should be aligned so the seam is invisible or nearly so. The seam should be tight, with no gap or wrinkle, and the tape should extend the full width of the backing. Nails or staples hold the turf down at the edges, spaced about six inches apart around the perimeter and at any seams. If nails are too far apart or too few, the turf will lift at the edge, especially in wind or when foot traffic is heavy. The perimeter itself should be finished with a bender board, landscape edging, or a secured border so the turf does not fray and water does not run underneath at the edge.
On patios and balconies, the turf is cut tight to the pavers or decking with clean, straight lines. On pool surrounds, the turf is cut to fit around the pool edge and secured so it does not shift. After all seams are taped and the perimeter is secured, the turf is power broomed. This step stands the fibres upright, spreads the infill evenly, and helps the turf settle into its final shape. Power brooming takes time and a specialized brush, and it is not done on cheap jobs. A visible seam, a lifted edge, or turf that feels flat and matted tells you the finishing work was rushed or skipped. These details do not show up in a photo, but they determine how long the turf will last and how good it will look in a year.
What a Written Turf Spec Should Include
Before work begins, you should have a written specification that details every layer and every step. This spec is your protection and your proof that the work was done as promised. It should include the turf product name and fibre type (for example polyethylene or nylon), the face weight in ounces per square yard, the pile height in millimeters, the backing type and drainage rate in gallons per hour per square foot, the infill type and amount in pounds per square foot, the base material and depth, the base compaction method, whether a weed barrier will be used, the seam method and location, the edging material and method, cleanup and haul-off, and the workmanship warranty period. The spec should also state that the base will be graded and compacted to drain away from structures, and that seams will be taped and nails spaced at six inches or less. This is not a sales document; it is a contract that names what you are getting.
A written spec protects both you and the installer. It prevents misunderstandings about what turf is being used, how much infill is going down, and how deep the base will be. If the turf fails early or a seam lifts, the spec is the standard against which the work is measured. Any installer worth hiring will provide a written spec without hesitation. If you are comparing pricing from different companies, the spec is how you compare apples to apples, because a low price on a thin base or light infill is not a bargain. For a free on-site measurement and estimate, we will walk the yard, identify any drainage issues, and provide a detailed written spec before you decide. The spec is yours to keep and to share with any other installer you want to consult.