Spreading infill on artificial turf comes down to three things: dry conditions, the right spreader, and brushing the material down into the fibers in multiple passes. The process is straightforward, but rushing it or skipping steps leads to uneven coverage that affects how your turf looks, drains, and holds up over time.
Why Infill Matters
Infill isn’t decorative. It’s what keeps your turf fibers standing upright instead of matting flat under foot traffic. It adds weight so the turf doesn’t shift or wrinkle, cushions the surface for a more natural feel underfoot, and improves drainage by letting water pass through rather than pooling on top. Without enough infill, or with poorly distributed infill, the backing is exposed to UV damage and the turf wears out faster.
Choose Your Infill Material
The most common residential infill is silica sand, which is affordable and effective for most lawns. Coated sand products like Envirofill add antimicrobial protection, making them a better fit if you have pets. Zeolite-based infills (sold under names like Zeofill) are specifically designed to trap odors and reduce bacterial growth, so they’re popular for dog runs. Rubber crumb infill is mainly used on sports fields for extra shock absorption and isn’t typical for home lawns.
Your choice affects how much you need per square foot, so check the manufacturer’s recommendation for your specific product before buying.
How Much Infill You Need
For silica sand on turf with a 1 to 2 inch pile height, plan on roughly 2 to 3 pounds per square foot. Coated sand products like Envirofill run slightly higher, around 2.5 to 3.5 pounds per square foot for residential landscapes. High-traffic zones may need more.
A more precise formula: divide your turf’s pile height (in inches) by two, multiply by your total square footage, then multiply by 0.0833 to get the cubic feet of infill required. Multiply that number by the weight per cubic foot listed on your infill bag to get total pounds. For a 500-square-foot lawn with 1.5-inch pile, that works out to roughly 1,250 to 1,500 pounds of silica sand, so it’s worth calculating before you buy.
Wait for Dry Conditions
This step is non-negotiable. When turf fibers are wet, infill sticks to them instead of sliding down to the base. The result is material sitting on top of the blades rather than settling between them, which defeats the entire purpose. One turf installation expert compares it to trying to brush sand off wet feet at the beach.
Check the forecast before you start. If rain is possible, postpone. If the turf is already damp from morning dew or a recent rinse, use a backpack leaf blower to dry the entire surface before spreading any infill. The fibers need to be completely dry so the granules can fall freely to the bottom of the pile.
Tools You’ll Need
For small areas (a balcony, a dog run, a putting green), a stiff-bristle push broom and a shovel will get the job done. For anything larger, a drop spreader is the standard tool. Drop spreaders release material directly below the hopper in a controlled path, giving you even, predictable coverage without throwing infill onto fences, flower beds, or walkways the way a broadcast spreader would. You can rent one from many turf retailers or equipment shops.
You’ll also want a flexible rake or power broom for working the infill into the fibers. Power brooms can be rented and are worth it for projects over a few hundred square feet.
Step-by-Step Spreading Process
Prep the Surface
Remove any debris, leaves, or dirt from the turf. Confirm the surface is dry. If you’re adding infill to an existing lawn that’s gone thin, use a stiff brush first to stand the fibers upright so the new material has somewhere to go.
First Pass With the Spreader
Load your drop spreader and walk in straight, overlapping lines across the turf, similar to mowing a lawn. Don’t try to apply the full amount in one pass. Aim for roughly half your target depth on the first round. This gives you room to correct any thin or heavy spots on the second pass. If you’re using a shovel for a small area, scatter the infill in thin, even layers rather than dumping piles.
Brush It In
After the first pass, use a power broom or stiff push broom to work the infill down into the turf. Start with quick, short back-and-forth strokes. This lifts the blades just enough for the granules to drop between them. Once the infill disappears into the grass, switch to longer strokes, brushing the fibers upright across the entire area. Always brush against the grain of the pile to help the blades stand tall.
Second Pass and Repeat
Apply the remaining infill with the spreader, then brush again. For some installations, especially with taller pile heights or heavy infill targets, a third pass may be necessary. The goal each time is the same: spread a thin layer, brush it in, and let it settle before adding more. Building up gradually prevents overfilling in some spots while leaving others bare.
Check Your Levels
When you’re done, walk the entire area and look for inconsistencies. You should see the top portion of the turf blades exposed above the infill, typically the upper third to half of the fiber. If infill is visible sitting on top of the blades, you’ve either applied too much or haven’t brushed enough. If you can see the backing or the fibers are flopping over, that spot needs more. Part the fibers with your fingers in several spots to check that infill reaches all the way to the base.
Fixing Uneven Coverage
Visible stripes or patches of different color usually mean the infill is thicker in some areas than others. Fibers buried under too much infill look darker and shorter, while underfilled sections appear lighter and floppier. The fix is simple: use a stiff rake to redistribute infill from heavy areas into thin ones, then brush the whole section again.
If you’ve significantly overfilled a spot, rake out the excess before it compacts. Compacted infill is harder to move later and can impede drainage. For spots that are too thin, add a small amount by hand, sprinkle it across the area, and brush it in rather than dumping more from the spreader.
Tips for Long-Term Maintenance
Infill doesn’t stay perfectly distributed forever. Foot traffic, rain, and leaf blowing gradually shift it around. Every few months, brush your turf with a stiff broom or flexible rake to redistribute the infill and keep fibers upright. High-traffic pathways and play areas lose infill faster and may need a top-up once or twice a year.
When topping up, follow the same rules: dry surface, thin layers, brush after each application. Keeping infill at the right level is the single most effective thing you can do to extend the life of your artificial turf.