Module 0 — Propagation Room Setup (Barn Build-Out)

Build Zone A (fresh stick / rooting) inside a barn. Stable conditions, high success rate, easy sanitation, repeatable batches.

Commercial rule: The propagation room is sacred. No storage. Only active batches.

Room plan

Top view (simple diagram)

Legend: [B] bench | [W] walkway | D door | X control wall

┌───────────────────────────────┐
│ [B][B][B]   [B][B][B]        │
│ [B][B][B]   [B][B][B]        │
│                               │
│ [W][W][W][W]   X (controls)   │
│                               │
│ [B][B][B]   [B][B][B]        │
│ [B][B][B]   [B][B][B]        │
│               D               │
└───────────────────────────────┘

Keep a 36–48" walkway. Put controllers on a clean, dry wall. Design drainage so there are no puddles—ever.

Where it fits

Zone A (THIS ROOM)
- Fresh stick
- Mist + humidity
- Bottom heat
- Highest sanitation

Zone B (WEAN)
- Step down mist
- Increase airflow + light

Zone C (HARDEN)
- Normal irrigation style
- Ready to pot-up

Scale tip: Duplicate the room design rather than “making one giant room” when you expand.

What you must build (minimum)

Envelope: insulated walls/ceiling + vapor barrier + washable surfaces.
Benches: wire/slatted tops (drainage + air + sanitation).
Mist system: filtered water, solenoid, controller, proper nozzles.
Drainage: no standing water; floor slope/drain/runoff path.
Airflow: gentle circulation + some air exchange.
Bottom heat: warm media drives rooting speed + uniformity.
Lighting: even, moderate LED coverage.
Sanitation station: tools + disinfectant + labels + SOPs.

Materials list with example products

Category	Minimum spec	Example links
Washable wall surface	Moisture resistant; wipe-down	FRP wall panels (example)
Benches / tops	Wire/slat; drains; easy to clean	Grower’s Supply benches · Dura-Bench tops (example)
Bottom heat	Heat mats/tubing + thermostat probe at tray height	Hydrofarm heat mat · Inkbird thermostat
Mist controller	Timer or leaf-sensor (better consistency)	Phytotronics Electronic Leaf
Nozzles / foggers	Uniform coverage; correct filtration	Netafim CoolNet · CoolNet Pro · Retail example w/ specs
Ventilation	Gentle circulation + air exchange	AC Infinity Cloudline (example)
Sanitation references	Print + follow	UConn sanitation PDF · UMass cleaning/disinfecting

Build order (don’t skip)

Drainage plan (no puddles).
Envelope (insulate + vapor barrier + washable walls).
Electrical (GFCI; dedicated circuits; control wall).
Benches (layout + service access).
Mist (filter → solenoid → controller → nozzles).
Airflow (circulation + exhaust/vent).
Bottom heat (probe at media height).
Lighting (even coverage).
Sanitation station (tools + labels + SOPs).

Pass/fail test: Can you wipe down every surface quickly? Can you run mist without puddles? Can you keep gentle airflow 24/7? If yes—you’re in commercial territory.

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