Artificial grass looks good in the Temecula heat, but what happens underneath the turf matters far more than what you see on top. The infill, base preparation, and drainage system determine whether your turf will last ten years or fail in two, whether a pet area will stay fresh or turn into a mud pit after rain, and whether puddles will sit on top or drain away. This guide walks you through the materials and methods that separate a solid installation from a shortcut job, so you can ask the right questions and understand what you are paying for.
Whether you are installing turf in a residential yard, a pet area, a pool surround, or a commercial property in Temecula, the foundation and infill work the same way. This page covers what goes under the turf, how much infill you need, why it matters, and what to ask for in writing before work begins.
Turf Infill Options: Silica, Coated Sand, Zeolite and Envirofill
Infill is the granular material spread across the turf after installation. It serves multiple purposes: it props up the synthetic fibres so they stand upright and feel natural underfoot, it protects the turf backing from ultraviolet light, it adds weight to hold the turf in place on windy days, and it helps the drainage system work by allowing water to flow through. The choice of infill affects durability, comfort, pet safety, odor control, and cost.
Silica sand is the most common and least expensive infill. It is a fine, angular mineral that works well as a ballast and base layer. Silica sand alone can be dusty in dry conditions and offers no special benefits beyond weight and drainage. Coated sand improves on silica by coating the grains with a smooth, rounded surface. Coated sand is gentler on the turf fibres, reduces dust, and can be tinted to match the turf colour for a more finished look. Zeolite is a porous mineral that absorbs moisture and odors, making it popular in pet turf installations where urine odor is a concern. Zeolite is often blended with sand rather than used alone. Antimicrobial and cooling coated infills, such as Envirofill, are engineered to reduce bacterial growth and lower the surface temperature of the turf in direct sun. These premium infills cost more but can be valuable in high-traffic pet areas or in yards where heat is a concern. Crumb rubber (recycled tire material) is used primarily in sports fields and athletic courts where impact absorption is the goal; it is not recommended for residential pet or play areas.
A quality installation uses a layered infill strategy: silica or coated sand as the base, often topped with zeolite or a specialty infill in the upper portion where pets and people interact most. This approach balances cost with performance. The installer should specify the infill type and pounds per square foot in writing before work begins.
How Much Infill Artificial Grass Needs, and Why
Infill quantity is specified in pounds per square foot, and it is one of the most common places where cost-cutting installers take shortcuts. Too little infill leaves the turf fibres unsupported, causing them to mat down, lose their spring, and wear faster. Insufficient infill also exposes more of the turf backing to ultraviolet light, which degrades the backing and shortens the turf lifespan. Light infill also fails to anchor the turf against wind and foot traffic, and in pet areas, it allows urine to pool rather than drain through the infill layer.
Typical residential turf requires between 1.5 and 2.5 pounds of infill per square foot, depending on the pile height, fibre type, and intended use. A putting green may need 2 to 3 pounds per square foot for a firmer, more controlled surface. Pet areas often benefit from the higher end of the range to maximize odor absorption and drainage. A cheap installation might use only 1 pound per square foot or less, which is visibly apparent after a few months when the turf begins to flatten and the backing shows through. Always ask the installer for the infill amount in writing as part of the specification, and do not accept a vague answer such as 'standard' or 'enough.' If an installer cannot or will not commit to a specific figure, that is a warning sign.
What to Put Under Artificial Grass for Drainage
What lies beneath artificial grass is as important as the turf itself. The process begins with removal: the existing lawn, sod, or old turf must be stripped away, along with roots and debris. On compacted soil, excavation may be necessary to reach a depth where proper base material can be installed and compacted. The goal is a stable, well-draining foundation that will not settle or shift over time.
After excavation, a weed barrier (landscape fabric) is laid down to prevent weeds from pushing through from below. In areas with severe weed pressure or on difficult soils, a thicker or dual-layer barrier may be justified. Over the weed barrier comes the free-draining base, typically three to four inches of decomposed granite, crushed limestone, or crushed base rock. This material is spread in layers and compacted firmly with a plate compactor. Proper compaction is critical: an uncompacted base will settle, creating dips and low spots where water pools and odors accumulate. The base should also be graded with a gentle slope away from the house and any pool to encourage surface drainage.
For hard surfaces such as concrete patios, balconies, or rooftops, turf cannot be glued directly to the slab. Instead, a draining underlay or pad is installed first. This pad sits between the concrete and the turf, allowing water to drain to the edges rather than pooling under the turf. For patios and balconies, edge drainage channels or perimeter grading ensure water exits the area. The turf is then laid over the pad and secured at the edges. This method prevents water from becoming trapped and keeps the turf from deteriorating prematurely.
Base Prep on Temecula Soil: Excavation, Base Rock and Compaction
Temecula sits in an inland valley with decomposed granite and clay soils that drain poorly in their natural state. When heavy winter rain falls or when irrigation or pet areas create standing water, a yard with no prepared base will hold moisture like a basin. This is why base preparation is not optional: it is the difference between a yard that stays dry and fresh and one that becomes waterlogged and smells.
Base preparation begins with excavation to remove the existing lawn and roots, and to reach a workable depth. On clay-heavy soils common in Temecula tract homes, excavation may need to go four to six inches deep to get below compacted surface layers. The excavated area is then graded to create a slope, typically a quarter inch to half inch per foot, running away from the house and any pool. This grading ensures that surface water does not collect in low spots. Over the graded soil, three to four inches of decomposed granite, crushed limestone, or crushed base rock is spread and compacted in lifts using a plate compactor. Each lift should be compacted until it is firm and stable. An uncompacted base is a common failure mode: it settles unevenly over months, creating dips where water pools, and these dips become odor hotspots in pet areas and breeding grounds for mold and algae.
If a yard has a genuine drainage problem, such as a high water table, seepage from a neighbor's property, or a history of flooding, base preparation alone may not be enough. In these cases, the yard needs a proper drainage solution before turf is installed. This might involve a French drain, a sump pump, or a regrading of the entire landscape. We work with the property owner and the local building department to solve the problem correctly, or we decline the job. A properly prepared base, combined with good turf drainage and infill, handles normal Temecula rainfall and pet use without issue.
Artificial Grass Drainage and Underlay: Perforated vs Fully Permeable
Artificial grass backing comes in two main types: perforated and fully permeable. Perforated backing has small holes punched through it, allowing water to drain downward into the base. Fully permeable backing (also called open-weave or non-woven) has no holes; instead, water flows through the material itself. Fully permeable backing typically drains faster than perforated backing. Drainage rate is measured in gallons per hour per square foot (GPH/SF). A fast-draining turf might achieve 15 to 20 GPH/SF or higher, while a slower product might drain at 5 to 10 GPH/SF. For residential yards and pet areas, faster drainage is better, especially in Temecula where pet urine and occasional heavy rain need to move through the system quickly.
However, turf drainage only works if the base beneath it drains too. A fast-draining turf installed over an uncompacted or poorly graded base will fail: water will sit on top of the base, saturate the infill, and create puddles and odors. This is why base preparation and drainage are inseparable. The turf, the infill, and the base must all work together. For pet areas and play areas, where heavy use and moisture are expected, a permeable underlay or drainage pad beneath the turf adds an extra layer of insurance. On hard surfaces such as concrete, an underlay is essential because concrete does not drain at all. Ask the installer for the turf's drainage rate in writing, and ask how the base will be prepared to support that drainage. A vague answer is a red flag.
Seams, Nails, Edging and Power Brooming
The finishing details of a turf installation reveal whether the work was done carefully or rushed. Seams are the joints where two pieces of turf are sewn or taped together. A good seam is nearly invisible. The turf is laid so that the pile grain runs in the same direction on both sides of the seam, and the seam is joined with specialized seam tape and a flexible adhesive designed for turf. The tape and adhesive are applied to the backing side, underneath, so they are not visible. The seam is then walked and pressed down to ensure a tight bond. A visible seam, a seam that is raised or lifted, or a seam where the pile grain does not match tells you the work was not done well. Over time, poor seams separate and water enters, causing the backing to degrade.
Nails and staples secure the turf perimeter. They should be spaced every four to six inches, driven at an angle to hold the turf flat without tearing the backing. Loose or missing fasteners allow the turf to lift at the edges, especially on windy days or in high-traffic areas. Edging is the perimeter treatment that finishes the yard and prevents turf from unraveling. Bender board (flexible wood edging), metal edging, or a secured perimeter lip holds the turf in place and creates a clean line between the turf and the landscape beyond. On patios and pool surrounds, turf is cut tight to pavers or cool deck material so that water drains away and the edges do not curl or lift in the sun. Power brooming is the final step: a mechanical broom is used to brush the turf fibres upright and spread the infill evenly across the surface. This step makes the turf look full and finished, and it ensures the infill is distributed uniformly so that no areas are over- or under-filled. A turf installation without power brooming looks flat and sparse immediately after installation.
What a Written Turf Spec Should Include
Before any work begins, ask the turf installer to provide a written specification that details exactly what will be installed and how. This spec is your protection and your reference. It should include the following items: the turf product name and fibre type (polyethylene, polypropylene, nylon, or a blend), the face weight in ounces per square yard, the pile height in millimeters, the backing type (perforated or permeable) 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 (decomposed granite, crushed rock, etc.), the base depth in inches, the compaction method, whether a weed barrier will be installed, the seam method and adhesive, the edging type, cleanup and haul-off of old turf and debris, and the workmanship warranty period (typically one to three years on the installation itself). The spec should also note any site-specific conditions, such as existing drainage issues or HOA architectural requirements.
A written spec accomplishes several things. It holds the installer accountable to a standard. It gives you a document to compare against the finished work. It prevents misunderstandings about cost and scope. And it demonstrates that the installer is professional and confident in their work. If an installer refuses to provide a written spec, or offers only a vague estimate with no product details, that is a sign to look elsewhere. For residential installations, commercial properties, and all other applications, the spec is the foundation of a good project. We are fully insured and provide a written spec for every job. To discuss your project and receive a free estimate, call us at (951) 466-0198 or visit our pricing page for more information.