How mixed infill reduces heat
Combining infills targets multiple heat mechanisms at once. Hydrophilic minerals like zeolite support evaporative cooling when rinsed or after rain. Coated silica sands with reflective or heat managing coatings limit heat absorption. Balanced gradation improves air movement within the thatch, helping heat dissipate faster.
- Evaporative effect from moisture holding minerals
- Lower solar gain from reflective coatings
- Better airflow and fiber stand up for less matting
- Stable base layer that keeps performance consistent
When mixing makes sense
- Hot, high sun regions where summer surface temps spike
- Projects that need cooling gains without premium cost across the entire area
- Play spaces, patios, and pet zones that see more heat and traffic
- Retrofits where you want more cooling without removing all existing infill
Recommended approaches
Layered system
Install a stability base of coated silica sand, then top dress with zeolite in the upper portion of the infill profile. Common targets are 60 to 80 percent base by weight and 20 to 40 percent cooling mineral focused in the top 6 to 12 millimeters. Always verify against your turf and infill manufacturer guidance.
Pre blended mix
Combine coated sand and zeolite before broadcasting. Typical blends range from 70 to 30 down to 50 to 50 by weight. Keep total infill within the turf specification for pile height and traffic.
Targeted zones
Use premium cooling infill only where it delivers the most value, such as south facing edges, near hardscape, or concentrated play areas. Fill the balance with coated sand to maintain stability and control budget.
Depth and weight guidance
- Total infill for most landscape turf typically falls between 1.0 and 2.5 pounds per square foot depending on pile height and use.
- Distribute the majority as the base layer, then finish with a cooling top layer unless your product specifies a different approach.
- Do not bury fiber tips. Maintain drainage and the specified freeboard at the top of the pile.
Installation steps
- Confirm approved infill types, total weight, and any color or coating requirements from the turf manufacturer.
- Choose a method: layered, pre blended, or targeted zones based on climate and budget.
- Apply infill in thin lifts. Broadcast evenly, broom aggressively, and lightly compact after each lift.
- Check depth by tuft height or with a probe to stay inside spec. Adjust high and low spots as you go.
- If using evaporative minerals or coated sands that require activation, lightly water after installation per product guidance.
Maintenance for lasting cooling
- Inspect seasonally. Top off infill to maintain the specified depth and even coverage.
- Rake or power broom to keep fibers upright and prevent migration.
- Rinse during heat waves to recharge evaporative cooling and keep surfaces clean.
- Spot check with an infrared thermometer at midday to verify cooling performance.
Mistakes to avoid
- Skipping manufacturer specs on total infill weight and layer ratios.
- Mixing particle sizes that segregate too easily. Choose compatible gradations.
- Using dusty or unwashed materials that can impede drainage.
- Overfilling and burying fibers, which can trap heat and reduce resilience.
Compatibility, safety, and warranties
- Use infills that meet safety standards for children and pets.
- Confirm chemical compatibility with turf backing, seam adhesives, and base materials.
- Document infill types and weights for warranty and future maintenance.
Pro tip
Pair a mixed cooling infill strategy with lighter turf shades or IR reflective yarns to stack heat reduction without overspending.
Get tailored help
Share your climate, pile height, and traffic profile. A FusionTurf specialist will recommend a mix, weights, and a maintenance plan that hits your performance and budget targets.
