Artificial grass installation depends entirely on what lies beneath it. The turf itself is only half the story. Infill, base preparation, drainage, and finishing details determine whether your installation will last ten years or fail in two, whether it will drain properly during Tampa's summer thunderstorms, whether pet odors will linger or dissipate, and whether seams will stay invisible or lift and separate. This guide walks a homeowner through each layer and each decision, so you understand what you are paying for and what questions to ask any turf installer, including us.
Tampa's sandy, flat terrain and Gulf Coast humidity create specific challenges. Yards sit on poor-draining soil, summer storms drop inches of rain in minutes, and chlorinated pool water splashes onto turf around screened cages. Pet areas turn to mud or smell of ammonia. Old St. Augustine lawns thin from chinch bugs and shade, leaving bare patches that beg for a solution. This guide explains how a proper installation solves those problems, what shortcuts look like, and how to verify that the work is done right.
Turf Infill Options: Silica, Coated Sand, Zeolite and Envirofill
Infill is the material spread across the turf surface after installation. It serves four purposes: it props the synthetic fibres upright so they look and feel natural, it protects the turf backing from ultraviolet light, it adds weight so the turf stays in place during wind and play, and it plays a role in how quickly water drains through the system. The choice of infill type affects performance, cost, and maintenance.
Silica sand is the baseline infill. It is inexpensive, widely available, and effective as a ballast. Silica sand grains are angular, which means they lock together well, but they can compact over time and they do not absorb odor. Coated sand rounds the silica grains and adds a polymer or mineral coating. Coated sand is gentler on pet paws, resists compaction better than raw silica, and the coating can be colored to match the turf or to hide wear. Zeolite is a porous mineral that absorbs ammonia and odors, making it popular for pet turf and dog run areas. Zeolite costs more than silica but can extend the life of a pet installation by reducing odor buildup. Antimicrobial and cooling coated infills, sold under brand names such as Envirofill, incorporate additives that inhibit bacterial growth or reflect heat. These are engineered for specific conditions (pet areas, sports fields, or hot climates) and command a premium price. Crumb rubber (recycled tire material) is used in sports and athletic fields because it provides shock absorption, but it is rarely recommended for residential yards because it retains heat, can migrate, and requires specialized maintenance.
The right infill depends on your use. A residential yard in sun may benefit from cooling infill. A dog run nearly always includes zeolite or coated sand to manage odor. A putting green uses fine silica to match the feel of real turf. Ask your installer what they specify in writing and why.
How Much Infill Artificial Grass Needs, and Why
Infill quantity is measured in pounds per square foot (psf). This is not a detail to overlook. Too little infill is one of the most common shortcuts taken by cheap installations. When infill is sparse, the turf fibres collapse, the backing is exposed to UV light and breaks down faster, water does not drain evenly, and the installation fails years before it should. A proper specification states the infill amount in writing, tied to the turf product and the intended use.
Typical residential turf requires between 1.5 and 2.5 pounds per square foot, depending on the pile height and face weight of the grass. Pet turf often runs 2 to 3 psf to support heavier foot traffic and provide more odor absorption. Putting greens may use less because the fibres are shorter and finer. Sports fields can exceed 3 psf. These are ranges, not promises. The exact amount depends on the product, the climate, and the application. A reputable installer measures your yard, chooses a turf product that fits your needs, and specifies the infill amount in writing before the work begins. If an estimate does not include infill quantity, ask for it. If the installer cannot or will not provide the figure, that is a warning sign.
Infill also settles over time, especially in high-traffic areas. Regular power brooming (a process explained below) redistributes it and helps the turf stay upright. Some homeowners add small amounts of infill every few years, particularly in dog runs. Your installer should tell you what to expect and how to maintain it.
What to Put Under Artificial Grass for Drainage
What goes under artificial grass matters as much as the grass itself. The process starts with removal. If you have an existing lawn, it must be stripped away, roots and all. If old turf is in place, it is removed and hauled off. Bare soil is then excavated to a depth that depends on the base material and the site conditions, typically two to four inches. The goal is to reach stable ground and to establish a grade that slopes away from the house and any pool or structure, so water does not pond.
Next comes a weed barrier, usually a landscape fabric. This prevents weeds from growing up through the turf and the base. On sites with aggressive weeds or difficult soil, a heavier or more durable barrier is used. The barrier is laid across the entire prepared area. Then comes the free-draining base, which is the critical layer. Decomposed granite or crushed base rock (typically limestone or recycled concrete) is spread in lifts of two to three inches and compacted with a plate compactor after each lift. This creates a firm, stable platform that resists settling and allows water to drain through. On poor-draining soil like Tampa's, proper base preparation is non-negotiable.
For patios, balconies, and hard surfaces, a draining underlay or pad is installed over the compacted base or existing concrete. This pad provides a softer feel underfoot and a small amount of water storage before drainage. For pet areas, an underlay can help odor control and reduce the impact of urine. Finally, the turf is laid, seamed, and secured. Never glue turf flat to a concrete slab without an underlay and edge drainage, because water will pool underneath and create odor and mold.
Base Prep on Tampa Caliche: Excavation, Base Rock and Compaction
Tampa sits on sandy soil and, in many neighborhoods, a layer of caliche (a hard, calcium-rich crust that forms just below the surface). Caliche does not drain well and can trap water, creating puddles and odor problems. This is why base preparation is the foundation of every successful installation. Proper base prep means excavating through the poor-draining soil, removing roots and debris, and installing a compacted layer of free-draining material that water can pass through quickly.
The excavation is graded with a slope, typically a quarter-inch to half-inch per foot, sloping away from the house, the pool, or any low point where water would collect. A plate compactor is run over the base material in lifts (layers), usually two to three inches at a time. Each lift is compacted firmly before the next is added. The final depth is typically three to four inches of compacted base material, though this varies with site conditions and the turf product. An uncompacted or poorly graded base is why turf develops dips, puddles, and persistent odor. Water sits instead of draining, infill settles unevenly, and the turf fails prematurely.
On a yard with a genuine water problem (poor drainage, standing water after rain, or a high water table), base preparation alone may not be enough. In those cases, a proper solution requires grading, regrading, or even a drainage system before the turf is installed. If drainage cannot be fixed, we will tell you that rather than install turf on a site destined to fail. That honesty protects your investment.
Artificial Grass Drainage and Underlay: Perforated vs Fully Permeable
Artificial turf is designed to drain water quickly, but the rate of drainage varies by product and backing type. Drainage is measured in gallons per hour per square foot (gph/sf). A turf with a perforated backing (small holes punched through the underside) drains at a moderate rate, typically 5 to 10 gph/sf. A turf with a fully permeable backing (made of a woven or non-woven material that allows water through across its entire surface) drains at a faster rate, often 15 gph/sf or more. For most residential yards, perforated backing is adequate. For pet areas, playgrounds, and sports fields, a faster-draining turf is preferred because urine, spilled water, or heavy rain needs to pass through quickly.
However, fast-draining turf fails if the base does not drain. If water cannot move through the base layer and into the soil below, it will pool on top of the base, under the turf, and create odor and mold. This is why base preparation and drainage work together. A properly compacted, well-graded base of decomposed granite or crushed rock allows water to percolate. A turf with good drainage backing allows water to move down through the infill and into the base. If either fails, the system fails.
For hard surfaces like patios, balconies, and pool decks, a draining underlay or pad is essential. This pad sits between the concrete and the turf, allowing water to flow sideways to the edges and then off the slab. Without an underlay, water pools on the concrete, traps odor, and breaks down the turf backing. Edge drainage (sloped edges or a perimeter that directs water away) completes the system. Ask your installer for the drainage rate of the turf in writing and confirm that the base is designed to match it.
Seams, Nails, Edging and Power Brooming
The finishing details separate a professional installation from a rushed one. Seams are where two pieces of turf meet. A seam is joined with a seam tape (a strip of adhesive-backed material) and a flexible polyurethane adhesive applied to both sides of the tape. The two pieces are pressed together with the pile grain aligned so the seam is nearly invisible. Seams are typically staggered (not running in a straight line across the yard) to make them less obvious. A visible seam, or one that pulls apart after a few months, signals either poor technique or a turf product that was not meant for seaming.
Edges are secured with nails or staples spaced at intervals (typically 6 to 12 inches) around the perimeter. The turf is pulled tight so there are no wrinkles or slack, and the nails or staples are driven just below the surface so they are hidden by the pile. The perimeter is then finished with bender board (a flexible metal or plastic edge), landscape edging, or a secured border that keeps the turf from rolling back. Where turf meets pavers or a pool deck, it is cut tight to the edge so water can drain and the edge does not trap dirt or trip a foot.
Power brooming is the final step. A power broom is a machine that brushes the turf in one direction, standing the fibres upright and spreading the infill evenly across the surface. This makes the turf look fuller and more natural, and it ensures that infill is distributed uniformly so drainage is even. A yard that has been power broomed will look noticeably better than one that has not. If you see a finished installation with matted or flattened turf, or with infill piled in one area and sparse in another, the brooming was skipped or done poorly.
What a Written Turf Spec Should Include
Before any work begins, ask for a written specification that details every material and every step. A proper spec protects you and ensures the installer is committed to a standard. It should include the turf product name and fiber type (polyethylene, polypropylene, or nylon), the face weight (ounces per square yard), the pile height (in millimeters), the backing type and drainage rate (gallons per hour per square foot), the infill type and amount (pounds per square foot), the base material and depth (typically three to four inches of compacted decomposed granite or crushed rock), the weed barrier type, the seam method (tape and adhesive), the edging method and material, cleanup and haul-off of old turf and excavation debris, and the workmanship warranty period (typically one to three years on the installation itself).
The spec should also note any site-specific conditions: whether the yard slopes, whether there is a drainage problem that must be addressed, whether any utilities (irrigation lines, low-voltage lighting, pet-fence wires) are present, and whether the work is in a front yard subject to HOA rules. If you need an HOA submittal, the spec is the document you submit. It shows the HOA exactly what is being installed and helps you get approval before work begins. We help with HOA submittals, but we cannot promise approval because architectural rules vary by community.
A written spec is your assurance that the installer knows what they are doing and will deliver a consistent product. It also gives you recourse if the work does not match the specification. When you are ready to get started, contact us for a free on-site estimate. We will measure your yard, discuss your needs, and provide a written spec and a price range based on the site conditions and the product that fits your use. See our pricing page for typical ranges, and call us at (786) 461-1575 if you have questions.