TRUEGRID was developed to be diverse in application and installation type.
The following installation process is for a TRUEGRID grass infill commercial applications such as a parking lots, fire lanes, or access roads.

Before you begin: Site Prep

1. Excavate to depth as specified on approved site plans
   • Proof roll subgrade.
   • Make sure you have proper total depth including base depth plus your TRUEGRID depth.
   • It is important to ensure the site is excavated such that the TRUEGRID product is flush or slightly recessed below the surrounding grade
2. Install any under drain system if specified on approved site plan. Sloping subgrade will also allow for sheetflow in needed direction.

Installation steps

1. Install geotextile fabric per manufacturer’s specification...adds stabilization to subgrade & separation from base aggregate.
   • Note: Subgrade must be relatively dry with no standing water prior to TRUEGRID® paver installation.
2. Install base material per approved site plans
   • TRUEGRID recommends to install the base material in 4” lifts
   • After each lift it is recommended to use the compaction equipment
3. Complete base material installation with final pass of compaction equipment
   • It is important that the base material is level enough so that the TRUEGRID is fully supported

Install TRUEGRID PRO PLUS

• Start in corner of site with male tabs on grid facing out. Line up grid and connect next grid section. TRUEGRID will typically go down at around 1000 SF per man/hr.
• Install TRUEGRID SuperSpots or SnowSpots if specified on approved site plans

Grass Infill Option A, Sodding:

• Fill topsoil about halfway (~1") into the TRUEGRID PRO PLUS.
• Place sod onto TRUEGRID PRO PLUS CELLS. Use a commercial sod laying machine for large jobs.
• Cut and remove (or avoid placing) small area of sod over flagged irrigation heads.
• Wet and saturate sod.
• Compress 1-inch sod into ½-filled PRO PLUS. Final surface should have only grass blades above the cells. Ensure sod roots make contact with topsoil infill.

Option B, Seeding/Hydroseeding:

• Fill topsoil level to the top of the TRUEGRID
• Remove or clear small area of soil over flagged irrigation heads.
• Options: Choose either seeding or hydroseeding
  • Seed: Spread grass seed at rate recommended by producer.
  - Apply a cellulose mulch, recommended.
  • Hydroseed: Spread mix per volume recommended by manufacturer.