Artificial grass installation in Mesa depends on three things working together: the turf product itself, the infill that holds it up, and the base underneath that lets water drain away. This guide walks you through each layer, explains what happens when one fails, and shows you what to ask for in writing before any work begins. Whether your bermuda lawn burned out in the June heat, your dog run has turned to mud and odor, or you need a yard ready for a move-in or listing, understanding base prep, drainage and infill will help you spot a real installation from one that cuts corners.
Mesa's flat terrain and hard caliche soil create a particular challenge: water does not run off easily, and a poorly prepared base will hold moisture, breed odor, and cause the turf to settle unevenly. The desert heat also means your choice of infill and turf product matters more than it might in a cooler climate. This guide is for homeowners and property managers in Mesa and the surrounding areas who want to know what goes into a turf installation that will last, drain properly, and perform in the heat and occasional monsoon storms that define our climate.
Turf Infill Options: Silica, Coated Sand, Zeolite and Envirofill
Infill is the granular material spread over the turf after installation. It serves four purposes: it weighs the turf down so it stays in place, it props up the grass fibres so they stand upright and feel natural underfoot, it protects the backing from UV damage, and it helps water drain through the system. The most common infill is silica sand, a basic mineral ballast that is inexpensive and effective. Silica sand drains well and compacts slightly over time, which is normal. It is widely used in residential yards, sports fields and commercial installations.
Coated sand is silica sand that has been rounded and often coloured to match the turf blade or to reduce heat reflection. The rounded shape is gentler on the fibres and on bare feet, and the coating can be antimicrobial or designed to cool the surface slightly. Zeolite is a porous mineral that absorbs and neutralizes odors from pet urine, making it popular for dog runs and areas with heavy pet use. It is often blended with sand rather than used alone. Envirofill and similar branded coated infills combine antimicrobial properties, cooling agents, and sometimes odor control in a single product; these are available as a material choice and may carry a premium cost. Crumb rubber, made from recycled tires, is a sports-field infill designed for shock absorption and is not typical for residential yards. Any infill choice should be specified in writing before installation begins.
How Much Infill Artificial Grass Needs, and Why
Infill is measured in pounds per square foot, and the amount matters. Too little infill is one of the most common shortcuts taken by cheap installations. Insufficient infill leaves the turf fibres floppy, exposes the backing to UV damage, reduces the weight that keeps seams from lifting, and can lead to drainage problems because the infill is what actually holds water and lets it percolate through. Typical residential turf requires between 1.5 and 3 pounds of infill per square foot, depending on the product, the pile height, the face weight, and the intended use. Pet turf and play areas often need more infill to handle foot traffic and odor control. Putting greens and sports surfaces have their own specifications.
The exact figure depends on the turf product you choose and the conditions of your yard. Rather than a one-size-all promise, the right amount is determined during the design phase and written into your spec. When you get a quote, ask the installer to state the infill type and the pounds per square foot in writing. If an estimate does not include this detail, you do not have enough information to compare it fairly to another bid. The installer should also explain why that amount is right for your turf choice and your use. A yard where children will play or where a dog will run hard all day may need more infill than a decorative front yard. This is the kind of detail that separates a thoughtful installation from a generic one.
What to Put Under Artificial Grass for Drainage
The layers under artificial grass matter as much as the turf itself. Start by removing the existing lawn, old turf, and roots. If you have a real sod lawn, that material will be hauled away; if there is old artificial turf, it will be removed and disposed of separately. Once the ground is cleared, the installer will excavate to the depth needed for the base, typically three to four inches depending on the soil and site conditions. A weed barrier (usually a nonwoven geotextile fabric) is then laid down to prevent weeds from growing up through the base and to separate the native soil from the new base material. The weed barrier is not waterproof; it lets water through while blocking roots.
Next comes the free-draining base, usually decomposed granite or crushed base rock. This material is spread in lifts (layers) and compacted firmly with a plate compactor. Compaction is critical: an uncompacted base will settle, leaving dips and low spots where water pools and odor develops. After the base is set, an optional draining underlay or pad may be installed. This is especially common for pet areas, patios, balconies, and play surfaces, where comfort and odor control are priorities. The underlay sits on top of the compacted base and below the turf, and it adds another layer of drainage and cushioning. Finally, the turf is laid over this prepared foundation. On hard surfaces like concrete or balconies, the approach is different: turf is never glued flat to a slab that can hold water. Instead, a draining underlay or pad is used, and the edges are detailed so water can escape rather than pool underneath.
Base Prep on Mesa Caliche: Excavation, Base Rock and Compaction
Mesa's desert soil presents a specific challenge for artificial grass installation. Much of the valley floor, especially in older neighborhoods near downtown and in West Mesa, sits on caliche, a hard layer of calcium carbonate and clay that drains poorly and resists excavation. Even where caliche is not present, the compacted native soil is dense and does not drain freely. This is why base preparation is not optional; it is the foundation of a turf installation that will not become a swamp after a monsoon storm or a source of odor in a pet area. The base must be excavated, graded with a slope that directs water away from the house and pool, and compacted in lifts so it becomes a stable, well-draining platform.
A typical base is three to four inches of decomposed granite or crushed base rock, compacted firmly with a plate compactor. The grading should fall away from structures at a gentle slope, typically one-quarter to one-half inch per foot. This slope is subtle but crucial; it keeps water from collecting against the foundation or in low spots where it will sit and cause problems. If the yard has a real water problem (poor natural drainage, a high water table, or a history of pooling after storms), the drainage issue must be addressed first. This might mean installing a french drain, regrading the entire yard, or in some cases, deciding that artificial turf is not the right solution for that site. We will be honest about this: if the base cannot be made to drain properly, we decline the job rather than install turf that will fail. A yard with standing water after a monsoon is not a problem turf can fix alone.
Artificial Grass Drainage and Underlay: Perforated vs Fully Permeable
Artificial grass drains in two ways: through the backing of the turf itself, and through the base underneath. Turf backing comes in two main types: perforated backing, which has small holes punched through it, and fully permeable backing, which allows water to flow through the entire surface. The drainage rate of the backing is measured in gallons per hour per square foot (GPH/SF). A typical residential turf might drain at 15 to 30 GPH/SF, while a sports or play surface might drain faster. The faster the drainage rate, the better the turf sheds water, but the backing is only part of the equation. A turf with excellent drainage will still fail on a base that does not drain, which is why base preparation and compaction are so important.
In Mesa, the real test of drainage comes during monsoon season and in pet areas. A heavy downpour can drop an inch or more of rain in minutes, and a dog run with high traffic and frequent use will accumulate moisture and odor if the system does not drain quickly. This is where an optional underlay or pad becomes valuable. For pet areas, play surfaces, patios, and balconies, a draining underlay sits between the base and the turf, adding another layer of permeability and cushioning. The underlay also helps distribute weight, reduces odor by keeping urine from pooling on the base, and adds comfort underfoot. On hard surfaces like concrete or a balcony, the underlay is essential; it keeps water from being trapped between the turf and the slab. When you review a turf spec, ask for the backing type, the drainage rate, and whether an underlay is included. These details should be in writing before installation.
Seams, Nails, Edging and Power Brooming
The finishing details of a turf installation reveal whether the work was done carefully or rushed. Seams are where two pieces of turf are joined together, and they must be sealed with seam tape and adhesive so they do not separate or allow water to penetrate the backing. A good seam is aligned so the grain of the turf runs in the same direction on both sides, making it nearly invisible from a normal viewing angle. The tape is applied underneath the seam, and the adhesive is spread evenly. Poor seam work shows up as a visible line, a gap, or a raised edge that catches your foot or collects debris. Seams that lift after installation are a sign that the base was not compacted properly or that the adhesive was not applied correctly.
Nails or staples hold the turf down at the perimeter and at seams, and they must be spaced correctly (typically every 6 to 12 inches depending on the product and conditions) and driven flush so they do not create a trip hazard or catch on mowers. Edging is the boundary detail where the turf meets the landscape. Common edging materials include bender board (a flexible wood or composite strip), metal edging, or a secured perimeter that keeps the turf from lifting at the edge. The turf should be cut tight to pavers, pool decks, and other hard surfaces so water drains away rather than pooling. After installation, the turf is power broomed, a process that stands the fibres up and spreads the infill evenly across the surface. A properly power broomed turf looks full and natural; one that is not broomed looks flat and thin. These finishing steps take time and skill, and they are what separate a professional installation from a quick lay-and-leave job. When you look at finished work, check the seams, the edges, and whether the turf looks full and even.
What a Written Turf Spec Should Include
Before any work begins, you should have a written specification that details every aspect of the installation. This spec is your protection and your reference if a problem arises. It should include the turf product name and fibre type (polyethylene, polypropylene, nylon), the face weight in ounces per square yard, the pile height in millimeters, the backing type and its drainage rate in GPH/SF, the infill type and the amount in pounds per square foot, the base material and depth (typically 3 to 4 inches), the compaction method, whether a weed barrier will be used, how seams will be sealed, the edging detail, cleanup and haul-off, and the workmanship warranty period (typically one to three years on the installation itself). If an underlay or pad is included, it should be named and described. The spec should also note any site-specific conditions, such as a slope for drainage or an HOA requirement for a particular turf colour or pile height.
A written spec is not a sales pitch; it is a contract document that both you and the installer sign. It protects you by making clear what will be installed and how, and it protects the installer by setting expectations. If you are comparing bids from different companies, a written spec allows you to compare apples to apples rather than guessing whether a lower price means a lower-quality product or just a shortcut in base prep. Ask for a site visit and a measurement before any estimate is given; pricing varies based on site conditions, base prep needs, and product choice. We provide a free estimate that includes a site assessment and a detailed spec. For more information on pricing and what to expect, see our pricing page. A spec in hand means you know exactly what you are getting, and that confidence is worth far more than a vague promise and a low bid.