Artificial grass installation in McAllen depends on three things working together: the infill that holds the turf up and lets water through, the base underneath that handles our subtropical climate and heavy clay soils, and the finishing details that separate a professional installation from one that fails within a season. This guide walks you through each of those layers, explains what to look for, and shows you what questions to ask any turf installer, including us. Whether you are converting a dead lawn, building a dog run, or preparing a yard for a move-in or an event, understanding what goes under the turf will help you make a choice that lasts.
McAllen's flat terrain, slow-draining black and grey clay, summer heat near 100 degrees, and late-summer tropical storms mean that turf installed on poor drainage becomes a problem within weeks. The base, infill, and backing all have to work together to shed water quickly and keep the turf stable through our weather. This guide is written for homeowners in McAllen and the surrounding areas who want to know what a solid installation looks like and how to verify it before the work begins.
Turf Infill Options: Silica, Coated Sand, Zeolite and Envirofill
Infill is the material spread across the turf after installation. It sits between and on top of the synthetic fibres, holding them upright, protecting the backing from UV damage, adding weight to keep the turf in place, and helping water drain through. The most common infill is silica sand, a basic ballast that is inexpensive and effective. Coated sand is silica sand that has been rounded and often coloured to match the turf or to create a more natural appearance. The rounding makes it gentler on the surface and easier to rake, and the coating can include antimicrobial properties that slow bacterial growth. Both silica and coated sand work well in residential yards, pet areas, and sports applications.
Zeolite is a porous mineral that has a natural affinity for ammonia and other odors, making it popular in pet turf and dog runs where smell is a concern. It is often blended with sand rather than used alone. Cooling and antimicrobial coated infills, sold under brand names such as Envirofill, are engineered to reduce surface temperature and inhibit odor-causing bacteria. These products cost more than standard sand but can make a real difference in high-heat yards and areas where dogs spend time. Crumb rubber, made from recycled tires, is used primarily in sports fields and playgrounds where impact absorption matters; it is not typically recommended for residential yards or pet areas. The right infill depends on your use, your budget, and the specific turf product you choose. Any installer should be able to explain the infill in writing and tell you how much of it will be applied.
How Much Infill Artificial Grass Needs, and Why
Infill is measured in pounds per square foot (psf), and the amount matters. Too little infill leaves the fibres floppy, the backing exposed to sun, and the turf prone to matting and movement. Too much infill can make the turf feel stiff and can slow drainage. Most residential turf is installed with 2 to 4 pounds per square foot, depending on the pile height, the fibre type, and the intended use. Pet turf often sits at the higher end of that range because the extra weight and density help with odor control and durability. Putting greens and sports surfaces may be specified differently. The infill amount is not something to guess at; it should be stated in writing on your estimate, along with the turf product, pile height, and base depth.
One common shortcut taken by cheap installations is under-filling the turf. A yard that looks fine on day one can start to show bare backing, develop dips, and smell bad within months if the infill is too light. Ask any installer to give you the infill weight in writing and to explain why that amount is right for the product and your use. If an estimate does not name the infill type and pounds per square foot, that is a red flag. The infill also needs to be distributed evenly across the entire yard, not just dumped in piles; power brooming is the step that spreads it and stands the fibres up properly.
What to Put Under Artificial Grass for Drainage
The layers under artificial grass do the real work in McAllen. Start by removing the existing lawn, dead sod, or old turf and all the roots underneath. Roots left in place will decompose and create voids that cause the base to settle and the turf to sink. Next, excavate to the depth required by your base spec, typically 3 to 4 inches. Grade the excavation so that water runs away from your house and any pool or patio, never toward them. Lay a weed barrier (usually a geotextile fabric) in areas where weeds are a concern, such as against a fence or under a patio. Then install your base material, which in McAllen is most often decomposed granite or crushed base rock, and compact it firmly in lifts using a plate compactor. Only after the base is compacted and graded do you lay an optional drainage underlay or pad (common for pet areas, patios, and playgrounds), and then the turf itself.
On hard surfaces like concrete or a balcony, the approach is different. Turf glued flat onto concrete with no drainage underneath will trap water, rot the backing, and smell bad within weeks, especially in our heat and humidity. Instead, lay a draining underlay or pad on the concrete, secure the edges, and then install the turf on top. This lets water drain to the edges and away from the slab. If your yard has standing water, poor drainage, or a history of flooding, the base prep is the place to fix it. If drainage cannot be solved, the turf will fail, and we will tell you that upfront rather than take a job that is doomed to disappoint you.
Base Prep on McAllen Soil: Excavation, Base Rock and Compaction
McAllen sits on flat ground with heavy black and grey clay soils that drain slowly and hold water after rain. This is the reality that shapes base preparation. Clay compacts hard but does not drain, so if you install turf directly on clay or on a thin, uncompacted base, water will pond underneath, the turf will sink, and odor will build up, especially in pet areas. The solution is excavation and replacement. Dig out 3 to 4 inches of the existing soil and clay, then grade the excavation with a slight fall away from your house and any pool or deck. Fill that excavation with decomposed granite or crushed base rock, a free-draining material that compacts firm and sheds water quickly. Compact the base in lifts (usually 1.5 to 2 inches at a time) using a plate compactor, making sure each lift is firmly compacted before the next layer goes down. A properly compacted base feels solid underfoot and will not settle or create dips after installation.
An uncompacted base is a common source of problems. The turf may look fine on day one, but as the base settles and shifts, you get low spots that hold water and smell bad, seams that pull apart, and a surface that feels uneven. Compaction takes time and the right equipment, but it is not optional. In McAllen's clay soils, it is the difference between a yard that stays flat and drains well for years and one that fails within a season. If your yard has a real water problem, such as a low spot that floods or a drainage pattern that brings water toward the house, that has to be fixed before turf goes down. We will work with you to solve it or, if it is beyond the scope of turf work, we will recommend that you address it first with grading or drainage work before we install.
Artificial Grass Drainage and Underlay: Perforated vs Fully Permeable
Artificial turf itself drains through the backing. Most residential turf has either a perforated backing, which has small holes punched through it to let water pass, or a fully permeable backing that allows water through its entire surface. The drainage rate is specified in gallons per hour per square foot (gph/sqft). A typical residential turf might drain 20 to 40 gph/sqft, meaning that a square foot of turf can shed 20 to 40 gallons of water per hour. That sounds fast, but in McAllen's late-summer downpours, a heavy rain can dump an inch or more of water very quickly. Pet areas and playgrounds face an extra test because urine and water have to drain fast or odor builds and the turf becomes a mud pit. The backing matters, but it is only part of the story. Fast-draining turf installed on a poor base will still fail, because the water has nowhere to go once it hits the clay underneath.
Drainage underlays and pads sit between the base and the turf. They add a cushion (useful for pet areas and playgrounds), they can improve drainage on hard surfaces like concrete, and they can help with comfort underfoot. On a patio or balcony, an underlay is essential because it allows water to escape to the edges instead of being trapped under the turf. The underlay itself must drain, and the edges must be open so water can run off. Do not accept a spec that glues turf flat to concrete with no underlay or edge drainage. Ask your installer for the drainage rate of the turf in writing, confirm that the base is compacted and graded to shed water, and make sure that any underlay is permeable and properly edged. In a yard with heavy clay and slow drainage, these details separate a turf that works from one that becomes a liability.
Seams, Nails, Edging and Power Brooming
The finishing details of a turf installation reveal whether the work was done carefully or rushed. Seams are joined with seam tape and a waterproof adhesive, and the grain of the turf on either side of the seam must be aligned so the pile runs the same direction. A seam that is visible, wrinkled, or pulling apart tells you the tape was not applied correctly or the adhesive failed. A good seam is nearly invisible once the infill is spread and the turf is power broomed. Nails or staples hold the edges down, and they should be spaced at the right intervals (typically every 6 to 12 inches, depending on the product and conditions) so the turf stays flat and does not buckle. Edges are secured with bender board, landscape edging, or a secured perimeter so the turf cannot lift or curl. Where turf meets pavers, a pool deck, or a patio, it should be cut tight and clean, not overlapped or folded under where water can get trapped.
Power brooming is the final step that separates professional work from a basic install. A power broom stands the turf fibres up, spreads the infill evenly across the entire surface, and helps the turf settle into its final shape. Without power brooming, the turf looks matted and the infill sits in clumps. A yard that is power broomed looks full, feels consistent underfoot, and drains evenly. Ask your installer what seam method they use, how edges will be finished, and whether power brooming is included. If you see visible seams, lifted edges, or bare backing showing through after a few weeks, contact your installer right away. These are signs that the work was not done to standard.
What a Written Turf Spec Should Include
Before you sign a contract or hand over a deposit, ask for a written specification that names every material and method. A proper spec includes the turf product (the brand and model), the fibre type (polyethylene, nylon, or polypropylene), the face weight in ounces per square yard, the pile height in millimeters, the backing type and its drainage rate in gallons per hour per square foot, the infill type and the amount in pounds per square foot, the base material and depth (typically 3 to 4 inches compacted), whether a weed barrier will be used, the seam method (tape and adhesive), how edges will be finished, what cleanup and haul-off are included, and the workmanship warranty period. This spec is your protection. It tells you exactly what you are paying for, and it gives you a standard against which to measure the finished work. If an estimate is vague about infill, base depth, or product details, that is a sign to ask more questions or look elsewhere.
A written spec also protects the installer by setting clear expectations. We provide a detailed spec on every estimate and we are happy to explain each line. Our fully insured installation team works to that spec, and we stand behind the workmanship for the period named in the warranty. For a free on-site estimate and spec, call us at (956) 468-3506 or use our contact form. We measure the yard, discuss your use and your budget, and send you a written spec before any work begins. You can also visit our pricing page to see the ranges and factors that affect cost. The spec is where the details matter most; make sure you have one in writing before you commit.