LGS Prefab Procurement: The 7-Point Technical Checklist You Can Use Tomorrow

Before You Read: A Quick Terminology Decoder

Keep this table open. You will need it.

Point 1: Delivery – What “2–3 Months” Actually Requires

A vendor cannot promise 2–3 months without these five preconditions. Ask for each:

• Mill order placed within 5 days of contract (not after engineering)

• Factory production schedule in weekly increments (no black boxes)

• Parallel site work allowed (foundations while modules are built)

• Permitting package ready day one (sealed engineering + lot numbers)

• Logistics pre-booked (container or flatbed, not “to be arranged”)

Red flag: “Typically 4–6 months, but we can rush.”
Green flag: “Here is the week-by-week Gantt from coil order to handover.”

Point 2: Cost – How to Validate “30–50% Lower”

Do not accept a single percentage. Require a line-item comparison against your local baseline (wood frame or concrete).

Quick validation: If total site labor + waste + logistics is not at least 30% lower than traditional, the claim is false.

Point 3: Traceability – The Minimum Acceptable Standard

Many vendors say “traceable.” Few deliver audit-ready logs.

Your vendor must provide, before shipping:

Minimum requirement: You must be able to trace any failed component back to its mill cert within 30 minutes during an audit.

Red flag: “We keep records; you can request them if needed.”
Green flag: “Here is your project’s Excel log, generated before the first module leaves the factory.”

Point 4: Structural Performance – Wind, Seismic, Corrosion (By the Numbers)

Do not accept “engineered.” Ask for the actual test or code reference.

If your project is in a typhoon zone, marine environment, or high seismicity, demand written material selections:

• C5-M marine: Grade 316 stainless steel connections + hot-dip galvanized LGS

• Zone 4 seismic: Continuous load path + moment-resisting connections (specify)

Point 5: Compliance – Certifications That Matter for RFQ Shortlists

Not all certs are equal. Procurement teams should prioritize:

Ask the vendor: “Send us your current supplier registry and ISO scope certificate before we schedule a technical call.”

Point 6: Past Deployment – What to Ask, Not What to Read

Vendors will show you beautiful project photos. You need different questions:

• “Name three projects completed in the last 24 months in environments similar to ours (corrosion / wind / seismic / remote logistics).”

• “For each, what was the actual delivery time vs. promised?”

• “Were there any substitute materials used without buyer approval?”

• “Can you provide a redacted compliance log from one government or hotel project?”

If they hesitate on any of these four, shortlist them lower.

Point 7: Proposal Quality – A One-Page Test

You can disqualify 70% of vendors with this single test:

Ask for a firm proposal that includes all of the following on one page:

• Total turnkey price (or supply-only price) per m²

• Delivery schedule: weeks from contract to handover

• BOM summary (framing, connections, fasteners, insulation, cladding)

• Traceability plan: one sentence per component type

• Sealed structural summary (not “available later”)

• List of applicable codes (ASTM, EN, AS, etc.)

Any vendor that sends a brochure instead of this one-page summary is not procurement-ready.

Immediate Next Steps: How to Use This Checklist

Option A – You are qualifying vendors
Print the 7 points above. Score each vendor 0/1 per line item. Any vendor scoring below 5 should not advance.

Option B – You are ready to send an RFQ
Copy the table below into your RFQ template:

Option C – You want a proposal from us
Send your RFQ or site constraints to our procurement desk. You will receive:

• 3–5 day firm proposal

• BOM + framing schedule

• Lot traceability plan (example)

• Sealed structural summary

• Access to past compliance logs (redacted)

No brochures. No fluff. Just the 7 points above, answered in writing.

One Final Table: LGS vs. Wood vs. Concrete (Procurement Summary)