Artificial grass installation depends entirely on what sits underneath it. The infill that holds the fibres up, the base that holds the water, the underlay that protects hard surfaces, and the finishing details that keep seams from showing and edges from lifting all determine whether a turf installation lasts fifteen years or fails in two. This guide walks through each layer: the infill options available, how much you need, what base materials work on Amarillo's heavy clay soils, how to manage drainage on a flat lot, and what a professional spec should include so you know exactly what you are getting.
Whether you are converting a lawn that has died in the drought, building a dog run that needs to handle mud and odor, preparing a patio for an event, or replacing turf that is lifting at the seams, understanding the foundation and structure will help you ask the right questions and verify that the work is done right the first time.
Turf Infill Options: Silica, Coated Sand, Zeolite and Envirofill
Infill is the granular material spread across the turf surface after installation. It serves four essential functions: it props the synthetic fibres upright so they feel and perform like natural grass, 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 mineral ballast that is inexpensive and widely available. Silica sand is angular and can compact over time, particularly in high-traffic areas, which is why many installers recommend periodic raking or power brooming to redistribute it.
Coated sand improves on silica by using rounded grains that compact less aggressively and often includes a colored coating to mask wear and blend with the turf colour. Zeolite is a porous mineral that absorbs and neutralizes ammonia and other odors, making it especially valuable in pet turf and dog run applications where urine odor is a concern. Antimicrobial and cooling coated infills, such as Envirofill, are engineered to inhibit bacterial growth and reduce surface temperature in direct sun. These premium infills cost more but can extend the life of the turf in high-use or high-heat settings. Crumb rubber (recycled tire material) is used primarily in sports fields and athletic courts where impact absorption matters; it is not typical for residential yards and carries considerations that differ from sand-based infills.
Most residential installations in Amarillo use silica or coated sand, often blended with zeolite in pet areas. The choice depends on your budget, the turf product, the intended use, and your priorities for odor control and appearance.
How Much Infill Artificial Grass Needs, and Why
Infill quantity is always specified in pounds per square foot (psf), and this number is critical. A typical residential turf might call for 1.5 to 3 pounds per square foot, depending on the pile height, fibre denier (thickness), and face weight of the product. The infill holds the fibres erect, so too little infill causes the turf to look flat and matted, reduces its lifespan, and allows the backing to be exposed to sun damage. Conversely, overfilling is wasteful and can cause drainage problems or make the surface feel unnaturally heavy underfoot.
Cutting corners on infill is one of the most common shortcuts in cheap installations. A crew that lays down 40-ounce turf on bare dirt or with minimal infill may charge less upfront, but the turf will fail prematurely, develop odor problems (especially in pet areas), and show wear patterns within a year or two. Always ask your installer to specify the infill type and the exact pounds per square foot in writing, and do not accept a vague answer like "we use industry standard." The specification should match the turf product's own technical sheet. Infill amounts vary by product, so there is no single correct number; the point is that it should be named and documented before work begins.
What to Put Under Artificial Grass for Drainage
The layers under artificial grass are as important as the turf itself. The process starts with removal of the existing lawn. If you have a natural grass lawn, it must be stripped away along with the root system and thatch. If there is old artificial turf, it is removed completely, including any old infill, backing, and adhesive. Any remaining organic material will decompose over time, creating voids that cause the new turf to sink and puddle.
After removal, the site is excavated and graded. On Amarillo's flat terrain, grading with a gentle slope away from your house and any pool is essential so water does not collect. A weed barrier fabric (typically a non-woven geotextile) is laid down to prevent weeds from growing up through the base. Then comes the free-draining base material, usually decomposed granite or crushed base rock, laid in lifts (typically 2 to 3 inches at a time) and compacted firmly with a plate compactor. This base must be solid and well-compacted so the turf has a stable, level foundation.
For pet areas, patios, and play areas, an optional draining underlay or foam pad is installed on top of the compacted base. This pad improves comfort underfoot, provides additional drainage, and helps contain odors. Finally, the turf is unrolled, seamed, and secured.
On concrete, balconies, or other hard surfaces, the approach differs. Turf is never glued flat to concrete without a draining layer, because water will pool underneath and cause odor, mold, and premature backing failure. Instead, a draining underlay or pad is laid first, and edge drainage is installed at the perimeter so water can escape.
Base Prep on Amarillo Soil: Excavation, Base Rock and Compaction
Amarillo sits on the Llano Estacado with heavy Pullman clay loam soil that cracks when dry and turns to mud after a storm. This soil does not drain freely, which means base preparation is not optional. If you simply lay turf on native soil, water will pool, the turf will sink, odor will develop (especially in pet areas), and the installation will fail. The base must be excavated, graded, and compacted to create a stable, draining foundation.
The standard approach is to excavate 3 to 4 inches of the native clay and replace it with a free-draining material such as decomposed granite or crushed base rock (often called crusher run or road base). This material is spread in lifts of 2 to 3 inches and compacted firmly with a plate compactor after each lift. Proper compaction is essential: an uncompacted base will settle, creating dips and puddles where water collects and odor builds up. The compacted base should be graded so water sheds away from the house and any pool or structure. If the yard has a low spot or a history of standing water, the excavation may need to be deeper and the grading more deliberate to ensure positive drainage.
On a property with a genuine water problem (poor drainage, a high water table, or a history of flooding), drainage must be addressed before turf is installed, or the job should not proceed. Artificial grass is not a solution for a wet yard; it is a finishing surface for a yard with sound drainage.
Artificial Grass Drainage and Underlay: Perforated vs Fully Permeable
Artificial grass itself drains through its backing. The backing is either perforated (with small holes punched through it) or fully permeable (a mesh or open weave that allows water to pass freely). Drainage rate is specified in gallons per hour per square foot (gal/hr/sf). A typical residential turf might drain at 5 to 8 gal/hr/sf, while a sports field or playground turf may drain faster to handle heavy use and frequent rinsing. Fully permeable backings drain faster and are preferred in high-moisture environments, but they cost more.
Here is the critical point: even a fast-draining turf fails catastrophically on a base that does not drain. If water cannot move through the compacted base and away from the site, it will pool under the turf, creating a swamp that smells, promotes mold, and causes the backing to fail. In Amarillo's clay soil, this happens quickly. The base preparation (excavation, grading, compacted free-draining material) is what really matters. Pet areas and heavy downpours are the real test of a drainage system: if the turf drains fast but the base does not, you will have odor and failure.
For hard surfaces such as concrete, patios, and balconies, a draining underlay or foam pad is installed between the base and the turf. This underlay has its own drainage rate and allows water to move laterally toward the edge where it can escape. Without an underlay, water trapped between the turf backing and the hard surface will create odor and decay. Edge drainage (a perimeter channel or sloped edge) ensures that water does not collect at the margin.
Seams, Nails, Edging and Power Brooming
The finishing details separate a professional installation from a quick patch job. Seams are where two pieces of turf are joined, and they must be sealed with seam tape and turf adhesive. The grain (the direction the fibres lean) must be aligned across the seam so the join is invisible. A visible seam or a seam that separates tells you the work was rushed or done without the right materials. In Amarillo's wind and temperature swings, a poorly sealed seam will lift and separate within months.
Nails or staples secure the turf perimeter and hold seams while adhesive cures. They must be spaced correctly (typically 6 to 12 inches apart) and driven flush so they do not catch or create a trip hazard. Edging is the transition at the boundary of the turf. Professional edging uses bender board (flexible wood or composite) or a secured metal or plastic trim that keeps the turf from rolling or separating. Turf cut to fit tight against pavers, pool coping, or a cool deck requires a sharp knife and precise measurement so there are no gaps where water or debris can collect.
Power brooming is the final step. The turf is swept with a stiff brush or a mechanical broom to stand the fibres upright, spread the infill evenly, and blend seams so they disappear. A turf that has not been power broomed will look flat and matted, and the infill will be clumped instead of distributed. This detail takes time but is essential to the finished appearance and performance.
What a Written Turf Spec Should Include
Before any work begins, you should receive a written specification that names every material and every step. This document protects you and ensures the installer knows exactly what they are committing to. The spec should include: the turf product name and fibre type (polyethylene, nylon, or polypropylene), the face weight (the weight of fibre per square yard), the pile height (the length of the fibre), the backing type and drainage rate (perforated or fully permeable, in gallons per hour per square foot), the infill type and pounds per square foot, the base depth and base material (for example, 3.5 inches of compacted crusher run), compaction method, whether a weed barrier is used, the seam method (tape and adhesive), edging type, and what is included in cleanup and haul-off. The spec should also state the workmanship warranty period (typically one to three years on the installation itself).
A written spec is not a sales document; it is a contract. It tells you what you are paying for and gives you a standard against which to measure the finished work. If an installer cannot or will not provide a detailed spec in writing, that is a red flag. A local, independent turf installation company names the product, the face weight, the infill, and the base depth because they stand behind the work. For a free on-site estimate and a full specification tailored to your yard, contact us. You can also review our pricing to understand the range and factors that drive cost.