| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. MATERIAL VERIFICATION | |||
| A1 | Waterproofing material brand, grade, batch verified against approved specification Acceptance: Purchase order matches spec; product certificate available; batch within usable shelf-life | Cl. 401 — Material approval | |
| A2 | Material test certificate available; viscosity, solid content, adhesion per IS standard Acceptance: Lab test report <6 months old; all parameters within spec; approval from QC | Cl. 401 — Quality verification | |
| A3 | Material stored correctly; temperature 5-40°C; containers sealed; no degradation observed Acceptance: Storage records available; containers intact; expiry date not exceeded; mixed materials <24 hrs old | Cl. 401 — Storage control | |
| B. APPLICATION PREPARATION | |||
| B1 | Weather conditions confirmed suitable: No rain forecast; ambient 5-40°C; humidity <90% Acceptance: Weather forecast checked; temp & humidity logged; rain protection measures in place | Cl. 401 — Environmental conditions | |
| B2 | Primer applied if required by product spec; curing time observed before main coat Acceptance: Primer coverage ≥0.5 kg/m² (typical); curing 24-48 hrs per product; adhesion test passed | Cl. 401 — Primer application | |
| B3 | Application equipment checked: Spray gun, roller, brush condition; nozzles clean; pressure verified Acceptance: Spray gun: pressure 2-3 bar, fan width 0.3-0.5m; roller: 10mm nap; brush: synthetic, lint-free | Cl. 401 — Equipment readiness | |
| B4 | Material mixed per specification; mixing ratio verified; mixing time 5-10 minutes Acceptance: Two-part systems mixed per ratio; no lumps; uniform color; usable life <8 hrs after mixing | Cl. 401 — Material preparation | |
| C. APPLICATION PROCEDURE | |||
| C1 | Application rate: Liquid 1-3 kg/m² per coat; sheet membrane laid with 150mm overlap minimum Acceptance: Liquid coats: 1-1.5 kg/m² first, 0.5-1.5 kg/m² second; sheet: 150mm lap, 100mm on walls | Cl. 401 — Application thickness | |
| C2 | First coat applied uniformly; coverage 100%; no thin spots or bare areas; application documented Acceptance: Visual inspection shows continuous coat; weight recorded; photo documentation; 24-48 hr cure | Cl. 401 — Coverage verification | |
| C3 | Second coat applied after first coat cure; cross-wise to first coat for better coverage Acceptance: Cross-application reduces missed areas; total thickness ≥2.5mm; weight verified | Cl. 401 — Multi-coat application | |
| C4 | Junctions reinforced: Edges, corners, penetrations treated with extra coat or reinforcing mesh Acceptance: Cove/chamfer areas: 2-3 coats; reinforcing mesh embedded in first coat; full tape coverage | Cl. 401 — Detail treatment | |
| C5 | Sheet membrane application: Laid with tension; all edges sealed; bubbles/wrinkles removed Acceptance: Membrane stretched 2-3% tension; seams heat-welded or adhesive-sealed; no air pockets >10mm² | Cl. 401 — Sheet laying | |