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Meristem TRAY

Pre-grown modules that land planted and come up for deck access.

Optimised for Phased installs and roofs that get opened again
Depth
4.5" (115 mm)
Saturated load
32 lb/ft² saturated
Annual retention
50%
Max slope
to 3:12
Wind
ANSI/SPRI RP-14 tested to 120 mph
Fire
ASTM E108 Class A
Planting
Sedum, allium and native forb mixes, grown to 95% before shipping
Maintenance
2 visits/year
Install rate
4,500 ft²/day, 2-person crew
Exploded assembly4.5" (115 mm) · 32 lb/ft² saturated
Pre-grown module600 × 600 mm, interlocking, lifts by hand20 mmMedia in trayShips planted, 95% coverage70 mmTray base + reservoirIntegral 0.31 gal/ft² reservoir18 mmSlip sheetProtects the membrane during module handling4 mmRoot barrierFLL-tested, 0.5 mm HDPE, loose laid6 mmWaterproofing (by others)Assembly is membrane-agnostic10 mmSTRUCTURAL DECK (BY OTHERS)
Specified when
  • Roofs with equipment to service
  • Phased occupancy
  • Green area ratio on a schedule
Retrofit over existing deckBiodiversity + habitatStormwater performance
Previously sold as

If a drawing in your set names one of these, it is asking for Meristem TRAY.

  • TrayGreen 4TG-4

    Module unchanged. Reservoir volume increased to 0.31 gal/ft².

  • V-Cassette M6VC-M6

    Superseded by the 600 mm module. Legacy sizes supported to 2028.

Technical documents

11 documents cover this system

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DWG

Typical assembly details — all systems

CAD + BIM · v9.0

DWG

Drain, penetration and expansion-joint details

CAD + BIM · v9.0

RVT

Revit family — TRAY module + edge restraint

CAD + BIM · v2026.1

PDF

Load table — saturated and dead loads, all systems

Performance data · v3.1

PDF

Wind uplift test report — ANSI/SPRI RP-14

Performance data · v2.2

PDF

Fire classification certificate — ASTM E108

Performance data · v1.4

PDF

Installation manual — LITE and TRAY

Installation · v7.0

PDF

Pre-installation checklist + membrane sign-off

Installation · v3.0

PDF

Maintenance schedule + plant establishment care

Maintenance · v5.1

PDF

Warranty registration form

Warranty + safety · v4.0

PDF

Safety data sheet — engineered growing media

Warranty + safety · v2.1

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