Artificial Grass Infill: Types, Amounts and How to Choose

Infill is the layer of granules worked in between the blades of artificial grass. It holds the blades upright, adds weight and cushioning, and helps water drain. Most lawns, pet areas and play areas need it. The best choice depends on who uses the space: for pets you want drainage and odor control, for kids you want cushioning, and for a putting green you want a firm, true roll. Here is how to pick it, how much to plan for, and how it goes in.

TL;DR

• Infill is a working layer, not a cosmetic extra. It keeps fibers standing, adds shock absorption and supports drainage.
• Most high-traffic turf needs it. Low-traffic or specialty products may use little or none.
• Match the material to the job. Pets call for drainage and odor control, playgrounds for cushioning, putting greens for a firm base.
• Plan by weight per square foot. Manufacturer guidance for residential lawns runs roughly 2 to 3.5 pounds per square foot for each inch of pile height.
• Skipping or letting infill thin out can cost you. Turf warranties are generally tied to the maintenance the manufacturer specifies, including replacing lost infill.

Table of Contents

• What infill does in an artificial lawn
• Types of artificial grass infill
• How heat changes the choice in Texas
• The best infill for pet turf
• Infill for play areas and putting greens
• How much infill do you need?
• How infill is installed
• Keeping infill working for years
• Our perspective
• Let us choose the right infill for your yard
• FAQ
• Sources

What infill does in an artificial lawn

Think of infill as the soil of a synthetic lawn. Penn State’s Synthetic Surfaces Research Center describes infill as functioning like the field’s “soil”, giving the fibers cushioning and support. The New Jersey Department of Environmental Protection’s 2025 review adds that infill occupies the space between fibers, keeps them upright, adds shock absorption and helps water drain.

In a backyard, that comes down to four things you can see and feel:

1. Blades stand up. Without infill, fibers lie down and the lawn looks flat and shiny.
2. The turf stays put. The weight of the granules helps hold the carpet flat so it resists rippling and shifting.
3. It feels softer underfoot. Granules cushion every step, jump and tumble.
4. Water moves through. A well-chosen infill lets rain and rinse water pass down to the base.

Is infill necessary?

Usually, yes. The New Jersey DEP notes that most athletic and high-traffic landscapes require infill. It also says non-infill or low-infill products exist for some low-traffic landscapes and specialty installations, where stability and weight matter less.

So a decorative strip beside a walkway might be fine with very little. A yard where the dog sprints, the kids play and the grill sits on the turf is a different story. If you are not sure which camp your yard falls in, the safest approach is to ask your installer which product you are getting and what infill it was designed for. The product’s design decides the answer.

Types of artificial grass infill

No single material wins everywhere. The New Jersey DEP lists rubber or plastic granules, sand, walnut shells, coconut fibers, cork and silica among infill materials, and notes that systems often combine several components. Penn State points out that silica sand mixed with crumb rubber makes the surface firmer than crumb rubber alone.

Here is how the common families compare for a Texas yard, based on what we see on DFW installs.

If you want a plain-language rule: sand-based infills are the workhorses for residential lawns, specialty coated or zeolite products are for pets, and rubber-based products are more of an athletic-field choice.

A note on crumb rubber

Crumb rubber is made from recycled tires, and families reasonably ask whether it is safe. Public concern prompted research by federal agencies. The EPA’s Federal Research Action Plan status report says the EPA, CDC and CPSC have not established elevated health risks, while acknowledging that existing studies have limitations. If your family is sensitive to the question, a non-rubber infill is an easy way to avoid it altogether. For most backyards, we simply lean toward sand-based options.

How heat changes the choice in Texas

DFW summers are hard on any surface. The University of Florida’s extension team notes that synthetic turf can exceed 160°F in full sun, which creates heat stress risks for people and pets. That is a surface temperature, not an air temperature, and it is why we always talk about shade, pile height and infill together.

Practical steps that help:

• Skip dark rubber granules in sunny yards where bare feet and paws will be.
• Consider a cooling or light-colored infill for south- and west-facing areas. Ask your installer what is available for your specific turf.
• Plan shade with a pergola, sail or tree where you can.
• Rinse on the hottest afternoons. The UF team notes homeowners may use water to cool the surface in hot weather, though it warms back up quickly.

The best infill for pet turf

Let’s be real: with dogs, the infill is where odor lives or dies. Urine passes through the fibers and the backing, and whatever sits in the infill layer can hold on to smell. That is why pet owners search for the best infill rather than just any infill.

For a pet yard, we look for four traits:

1. Fast drainage. Liquid should leave the surface quickly instead of pooling in the granules.
2. Odor control. Zeolite-based and antimicrobial-coated products are designed for this job.
3. Round, smooth grains. They resist packing and stay kinder to paws.
4. Easy rinsing. You should be able to hose the area and have it flush through. The UF extension notes that homeowners often rinse turf to manage pet waste, control odors and remove dust.

The infill is only one part of a pet-friendly system. A properly built base, good drainage under the turf and a regular cleaning routine do the rest. If your dog already has a favorite potty spot, read our guides on deodorizing artificial grass by reaching the infill and getting rid of dog urine smell on artificial grass. For a full routine, see our artificial turf cleaning guide.

Want the whole picture for your furry friend? Our pet turf page explains how we build these yards.

Infill for play areas and putting greens

Playscapes

For kids, the question is cushioning. Penn State explains that infill provides cushioning and support for the fibers, and some systems also add a separate shock pad. The Massachusetts Toxics Use Reduction Institute notes that a shock pad may be optional or required depending on the infill type.

A leading infill manufacturer’s installation guidelines suggest about 2 to 2.5 pounds per square foot for playgrounds, and say a safety pad does not change that recommendation. Whatever the numbers, play surfaces under swing sets and slides deserve a conversation about fall height and padding. We cover that in our playscapes work.

Putting greens

Greens are the opposite of a soft lawn: you want a firm, consistent roll. According to the same manufacturer guidance, longer-pile bent-grass style greens use about 5 to 6 pounds per square foot of sand plus about 1 pound of green infill, while short texturized systems use about 2 to 2.5 pounds per square foot. Because every construction differs, the exact recipe depends on the turf you choose. See our golf and putting greens service for how we approach it.

How much infill do you need?

Infill is sold by weight, usually in bags or buckets, so the math starts with pounds per square foot. The manufacturer guidance linked above gives residential lawns about 2 to 3.5 pounds per square foot for each inch of pile height. Your turf’s spec sheet is the final word, because the product’s pile height, density and backing change the number.

A worked example

Say you have a 500 square foot backyard patch, and the turf’s spec calls for 2.5 pounds per square foot.

1. Area: 500 sq ft
2. Weight: 500 × 2.5 lb = 1,250 lb
3. Bags: if your infill comes in 50-lb bags, 1,250 ÷ 50 = 25 bags
4. Add a small buffer for edges and spills, and round up

Bag sizes vary by product, so always divide by the weight printed on the bag you are buying. Measure irregular areas by splitting them into rectangles and triangles, adding the pieces together.

How infill is installed

Infill goes on last, after the base is compacted, the turf is laid, seamed and secured. Penn State’s research describes the process: infill can be added with a commercial topdressing device, applying small amounts and brooming them into the fibers, repeating as needed to reach the required depth. The New Jersey DEP’s review says infill is layered to a depth of about 25 to 40 mm depending on intended use, which is roughly 1 to 1.6 inches.

The basic sequence:

1. Brush the fibers upright with a power broom or stiff brush.
2. Spread a thin, even layer of infill with a drop spreader.
3. Broom it in so the granules settle to the base of the blades.
4. Repeat in light passes until the full weight is down.
5. Finish with a final brushing so the blades stand tall and uniform.

Dumping a thick layer in one go leaves clumps on top and uneven weight below. Thin passes are what make it work. Want to see the whole job? Our step-by-step installation guide walks through every stage.

Keeping infill working for years

Infill moves. Foot traffic, wind, pets and cleaning all shift granules, and high-use spots like gates and the dog run thin out first. A few habits keep it in shape:

• Brush against the grain every so often so blades stay up and granules distribute.
• Check the high-traffic spots for thinning and top up as needed.
• Rinse pet areas regularly so waste does not build up in the infill layer.
• Keep the manufacturer’s maintenance steps on file. Penn State notes that turf warranties are generally contingent on regular maintenance specified by the manufacturer, including brushing and periodic replacement of lost infill.

For routines and schedules, see our care and maintenance guide, and read our warranty primer so you know what to ask before you sign.

Our perspective

We install turf across Dallas-Fort Worth, and we have seen the same pattern for years: the infill decision gets made last, and it should be made first.

A good installation starts with who uses the yard. A dog yard needs fast drainage and odor control. A play area needs cushioning. A putting green needs a firm, consistent surface. When we match the infill to the use, the lawn looks better, feels better and is simpler to keep clean.

Our approach is built on careful craftsmanship: a compacted base, properly seamed turf, and infill brushed in thin, even passes instead of dumped and hoped for the best. We would rather spend an extra hour getting that last step right than hand you a lawn that flattens out by next summer.

We also like to talk through the heat. In North Texas, we think about shade, pile height and infill together, because a lawn that looks great but is too hot to use is not doing its job.

Everson

Let us choose the right infill for your yard

If you would rather have a pro handle the base, the turf and the infill as one system, that is what we do. We install residential lawns, pet turf, playscapes, putting greens and commercial turf across DFW. Tell us who uses your yard, and we will recommend a setup built around it. Start with our landscape turf service or contact us through our site.

If your yard also needs walkways or patio space, we install landscape pavers too, so one crew can handle the whole project.

FAQ

Is artificial grass infill necessary?

In most cases, yes. Infill keeps blades upright, adds weight and cushioning, and helps drainage. The New Jersey DEP notes that most high-traffic landscapes require it, and only some low-traffic or specialty products are designed to use little or none. Check the spec sheet for your turf.

What is the best infill for artificial grass?

It depends on the use. For a general lawn, sand-based infill is the common workhorse. For pets, coated sand or zeolite-based products are designed for drainage and odor control. For play areas, cushioning matters most. Your installer can match the product to your turf and your yard.

How many bags of infill do I need?

Multiply your square footage by the pounds per square foot your turf calls for, then divide by the weight of one bag. For example, 500 sq ft at 2.5 lb per sq ft is 1,250 lb, or 25 bags of 50 lb. Add a small buffer for edges.

How do I add infill to artificial grass?

Brush the fibers upright, spread a thin layer with a drop spreader, and broom it into the blades. Repeat in light passes until you reach the full amount, then brush once more. Thin layers prevent clumps and uneven weight.

Does infill help with pet odors?

The right one can. Zeolite-based and antimicrobial-coated infills are designed to control odor, and fast-draining sand lets rinse water flow through. Regular rinsing matters too. Our dog urine smell guide has a step-by-step routine.

Sources

• Synthetic Turf: A Review of the Current Science (New Jersey DEP, 2025)
• Getting to Know Synthetic Turf (Penn State Synthetic Surfaces Research Center)
• Synthetic Turf: History, Design, Maintenance, and Athlete Safety (Penn State, 2018)
• Athletic Playing Fields: Choosing Safer Options (Massachusetts TURI)
• Considering synthetic turf? What homeowners should know (University of Florida IFAS, 2025)
• Federal Research Action Plan on Recycled Tire Crumb (EPA, 2016)
• Infill installation guidelines for landscape and recreational applications (manufacturer guide)

Recommended

• How to Install Artificial Turf: A Step-by-Step Guide
• How to Lay Fake Grass: A Comprehensive Guide for Beginners
• 5 Steps to Invisible Artificial Grass Seams: 1/16–1/8 in Gap
• Pet Owners: Deodorize Artificial Grass by Reaching the Infill