Why the Base Choice Matters for Pets

The base under artificial turf sets the standard for drainage, odor control, stability, and paw comfort. Get the foundation right and daily cleanup is faster, smells stay in check, and the surface holds up to hard play.

  • Drainage: Fast percolation moves urine away from the surface.
  • Odor control: Proper materials and infill reduce ammonia smells.
  • Stability: A compacted, even base stops rutting and seams from shifting.
  • Paw health: Smooth, firm support prevents muddy spots and hot pockets.

The Spec Installers Trust for Dog Runs

Base Materials

  • Primary aggregate: Clean, angular crushed stone (commonly 3/4 inch or 3/8 inch). Washed stone promotes rapid drainage.
  • Screening layer (optional): A thin layer of 1/4 inch minus for final leveling without loading the system with fines.
  • Avoid: Round pea gravel (poor interlock), dirt or topsoil (retains urine and odor), and heavy clay fill.

Depth and Compaction

  • Target thickness: 4 to 6 inches for typical residential pet areas. Use more over clay or where heavy traffic is expected.
  • Compaction: Plate compact in 2 inch lifts to a firm, unyielding surface. Re-wet clean stone lightly to help lock particles.

Drainage and Slope

  • Slope the base 1 to 2 percent away from structures to move water fast.
  • For tight, clay heavy soils, add a perforated drain line in a shallow trench at the low side, wrapped in fabric and surrounded with clean stone.
  • Separate native soil and aggregate with a permeable geotextile to prevent mixing and to maintain drainage.

Infill for Odor Control

  • Use antimicrobial coated sand or a premium zeolite blend. Both help neutralize ammonia and keep the surface fresh.
  • Typical loading: 1 to 2 pounds per square foot, brushed in evenly and topped up as needed.
  • Avoid rubber crumb in pet zones since it can retain heat and odors.

Underlay and Barriers

  • Permeable weed barrier only if needed. It must not block vertical drainage.
  • Skip impermeable membranes in pet areas. Trapped liquids create odor problems.

Edge Restraints

  • Install composite bender board or a treated lumber frame to lock the base and turf perimeter.
  • Set edges true and level to support clean seams and prevent creep.

Step by Step Install Checklist

  1. Mark utilities and layout. Plan slope and low side drainage.
  2. Excavate 4 to 6 inches below finished grade and remove organics.
  3. Lay permeable geotextile over subgrade.
  4. Place clean, angular crushed stone in 2 inch lifts.
  5. Compact each lift until firm and stable.
  6. Fine tune grade and slope with a light screening layer if needed.
  7. Dry fit turf, seam, and secure edges.
  8. Power broom fibers upright.
  9. Distribute antimicrobial or zeolite infill and brush to settle evenly.
  10. Final groom. Hose test to confirm rapid drainage.

Climate and Soil Adjustments

  • Clay soils: Increase base depth, use geotextile, and consider a perimeter drain.
  • Freeze thaw regions: Favor clean, open graded stone and reliable slope to reduce heave.
  • High rainfall: Add extra outflow capacity and avoid fines that slow percolation.
  • Arid zones: Choose light colored infill and fibers to manage surface temperature.

Maintenance That Stops Odors

  • Daily to weekly: Remove solids promptly. Quick hose rinse in traffic zones.
  • Monthly: Enzymatic cleaner on high use areas to break down organic residue.
  • Seasonal: Top up infill if levels settle. Power broom to lift fibers and improve airflow.
  • After accidents: Rinse through to base until water runs clear.

Common Mistakes to Avoid

  • Building with soil, DG, or heavy fines that hold urine.
  • Too shallow a base that settles and puddles.
  • No slope or blocked outflow that traps water.
  • Using impermeable liners beneath pet turf.
  • Choosing round pea gravel that shifts under paws.

Materials and Quantities per 100 sq ft

  • Clean crushed stone base: 1.2 to 1.8 cubic yards (for 4 to 6 inches of depth).
  • Optional screening layer: 0.1 to 0.2 cubic yards.
  • Antimicrobial or zeolite infill: 100 to 200 pounds.
  • Geotextile fabric: 120 square feet (allows overlap).
  • Edge restraints and spikes or screws as required.

When to Call a Pro

Choose a professional installer when soil is heavy clay, the area is larger than 600 square feet, or you need integrated drains. Proper compaction tools, grading, and seam work protect your investment and performance.

Ready to Spec Your Pet Area

Start with a clean, permeable stone base, set real slope, and finish with odor fighting infill. That combination keeps turf fresh and play ready for pets and people.