38,000 sqft of unitised curtain wall. Wind-zone qualified to +2.0 kPa. 142-day timeline from PO to RFO. Concurrent with 10+ other live projects.
A speculative-build commercial tower in BKC. Developer required a Grade-A facade qualifying for IGBC Platinum, with a 30% better solar-heat-gain coefficient than the city baseline and capable of withstanding Mumbai's coastal wind exposure (+1.8 kPa face load, ASTM B117 1,000 h salt-spray).
The tendered scope was for a stick-built system. We counter-proposed a unitised curtain-wall approach: every floor's glazing arrives as 1.5 × 4 m pre-assembled modules, lifted by tower crane, hooked onto pre-installed brackets. The proposal saved 32 days of erection time and reduced site labour by 40%.
| Spec | Value | Why |
|---|---|---|
| System | Unitised curtain wall, 150 mm mullion depth | Carries 4-storey wind-load + dead load with cantilever capacity |
| Glass | 8 mm HT + 16 mm argon spacer + 8 mm Saint-Gobain Cool-Lite SKN 154 II | SHGC 0.27, U-value 1.4 W/m²K — exceeds IGBC Platinum requirement |
| Coating | Qualicoat Class 2 Seaside, RAL 9007 grey aluminium | Coastal-grade for Mumbai salinity |
| Brackets | M16 SS316 + GI cast-in plates per floor | Stainless inside the building envelope to prevent staining |
| Sealant | Dow Corning DC-995 structural + DC-791 weather | 25-year proven life in Mumbai coastal exposure |
We engaged the structural consultant's preferred third-party lab (CBRI Roorkee) for the project-specific sign-off. Two full-floor mock-ups (3 m × 12 m) were assembled at the lab and tested for:
| Phase | Days | Outcome |
|---|---|---|
| Design + drawings + structural sign-off | Days 0–28 | PEB-coordinated GAD + 110 shop drawings approved |
| Mock-up & lab certification | Days 29–48 | CBRI test reports issued; developer release |
| Production batch 1 (floors 1–4) | Days 49–76 | 160 unitised modules built, packed, shipped |
| On-site erection of batch 1 | Days 67–96 | Concurrent with later batches in production |
| Production batches 2–4 (floors 5–16) | Days 77–118 | 480 modules + ground-lobby |
| On-site erection of batches 2–4 | Days 97–134 | Full envelope dry |
| Sealant cure + RFO inspection | Days 135–142 | IGBC sign-off + developer handover |
| Total | 142 days | vs. tendered 180 days |
Both, on B2B projects. On this project we took full design-build responsibility including structural coordination with the developer's PEB consultant, sealant warranty (25 years via Dow Corning), and IGBC documentation.
GST @ 18% is charged on the basic value. For B2B (registered) customers, the full GST is available as input-tax-credit, making the effective cost equal to basic value + transport. See our GST policy.
Yes — Mumbai is 711 km from our Hyderabad factory, within the 1,000 km radius, and the order value comfortably exceeds the ₹15 L threshold. Full transport was free.
Yes, plus a project-specific Public Liability + All-Risks construction policy taken at the start of every B2B project > ₹50 L. Schedule shared with the developer at PO stage.
A dedicated maintenance manual is handed over including BMU operating instructions for facade cleaning. Annual structural & sealant inspections optional under our 5-year AMC.
WoodenMax engineers visit free within 48 hours, measure on site, and share a locked PDF quote with GST & transport pre-confirmed.
Book free site visit →GST 18% extra • Free transport on ₹15L+ orders ≤ 1,000 km from Hyderabad • policy