| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. HOLD POINTS (Work Stop - Approval Required) | |||
| A1 | HP-1: Roof Structure Inspection Complete - Before underlayment installation Acceptance: All purlins level (±5mm/m); No defects; Structural inspection signed off; Checklist QC-ROF-CHK-001 baseline reference | Clause 1.1 — Structural readiness | OK NC NA HOLD |
| A2 | HP-2: Material Batch Certification Verified - Before sheet laying begins Acceptance: Test certificates received; Batch traceability confirmed; Grade/gauge verified; Thermal conductivity (for insulation) confirmed | Clause 1.2 — Material qualification | OK NC NA HOLD |
| A3 | HP-3: Substrate Preparation Complete - Before insulation/sheet installation Acceptance: Surface clean, dry, level (±5mm/m); Primer applied (if required); Moisture test passed; Visual inspection approved | Clause 1.3 — Surface readiness | OK NC NA HOLD |
| A4 | HP-4: First Sheet / First Slab Laying - Witness point for correct positioning and fastening Acceptance: Sheet/slab position correct; Overlap measured (confirmed ±mm); Fastening pattern verified; QC inspector present | Clause 1.4 — Initial installation verification | OK NC NA HOLD |
| A5 | HP-5: Insulation Slab Installation Batch Approval - After 100 m² of insulation laid, before proceeding Acceptance: Running bond verified; Joint gaps ≤5mm; Adhesion test (tap test) passed; Surface level (±3mm/m); Inspector approval | Clause 1.5 — Batch acceptance | OK NC NA HOLD |
| A6 | HP-6: Water Test Ready - Before final sealant application cures Acceptance: All sealant applied; Penetration boots installed; Edge trim fastened; 24h cure minimum; Ready for spray test | Clause 1.6 — Leak prevention verification | OK NC NA HOLD |
| B. INSPECTION POINTS (QC Inspections - Must Pass) | |||
| B1 | IP-1: Roof Sheet Installation Inspection - Per 500 m² of sheets laid (Checklist QC-ROF-CHK-001) Acceptance: Lap joints correct (150-200mm); Fastening pattern verified (1 per valley); Sealant applied to all joints; No defects observed | Clause 2.1 — Installation quality | OK NC NA HOLD |
| B2 | IP-2: Insulation Laying Inspection - Per 500 m² of insulation (Checklist QC-ROF-CHK-002) Acceptance: Running bond pattern verified; Joint gaps ≤5mm; Adhesion strength adequate (tap test); Surface level ±3mm/m; No voids | Clause 2.2 — Insulation quality | OK NC NA HOLD |
| B3 | IP-3: Waterproofing Inspection - All sealed joints and penetrations (Checklist QC-ROF-CHK-003) Acceptance: Sealant continuous; No gaps or voids; Penetration boots installed; Overlap correct; Pre-water test visual check passed | Clause 2.3 — Sealing quality | OK NC NA HOLD |
| B4 | IP-4: Pull-Out Test (Fastener Strength) - Minimum 5 points (Test report QC-ROF-TST-003) Acceptance: Pull-out load ≥2.0 kN average; No premature slip; Sheet failure mode preferred; Load capacity >design load (SF ≥1.5) | Clause 2.4 — Fastener integrity | OK NC NA HOLD |
| C. WITNESS POINTS (Contractor to Notify QC; QC Must Be Present) | |||
| C1 | WP-1: Material Unloading & Storage Setup - At start of project Acceptance: Material quantity confirmed; Storage area verified (elevated, protected); Initial condition checked; Batch numbers recorded | Clause 3.1 — Material receipt | OK NC NA HOLD |
| C2 | WP-2: Underlayment Installation - Before sheet laying Acceptance: Membrane type confirmed; Overlaps 150mm measured; Stapling pattern verified; No tears observed; QC photos taken | Clause 3.2 — Moisture barrier setup | OK NC NA HOLD |
| C3 | WP-3: Fastener Type Confirmation - First fastener installation Acceptance: Fastener type matches spec (stainless/galvanized); Washer type verified (neoprene, 20-25mm); Spacing confirmed (max 300mm c/c) | Clause 3.3 — Fastener verification | OK NC NA HOLD |
| C4 | WP-4: Sealant Application Start - First joint sealed Acceptance: Sealant product confirmed; Surface prep (cleaning, primer) done; Bead width/depth verified (10-20mm × 5-10mm); Appearance acceptable | Clause 3.4 — Sealant qualification | OK NC NA HOLD |
| C5 | WP-5: Penetration Boot Installation - First penetration sealed Acceptance: Boot type matches spec; Overlap 100-150mm confirmed; Fastening pattern verified; Seal complete; Photo documentation | Clause 3.5 — Penetration protection | OK NC NA HOLD |
| C6 | WP-6: Water Test Execution - Final functional test Acceptance: Spray pressure 30 psi, duration 15 min; Interior inspected during and after test; No water entry observed; Gutters drain freely | Clause 3.6 — Leak test | OK NC NA HOLD |