Stick-built and unitised aluminium curtain wall systems for commercial high-rise buildings, airports, hospitals and institutional facades. Full structural engineering documentation. Pan India supply.
Get a QuoteCurtain wall systems from Railings India provide complete weather-tight aluminium and glass facade solutions for high-rise commercial buildings, airports, hospitals and large institutional projects. Systems are designed to IS 875 wind load requirements and supplied with full structural engineering documentation for EPC contractor and PMC submission. 6063-T5 architectural aluminium alloy throughout.
Stick-built curtain wall systems are assembled on-site from individual mullion and transom sections fixed to the building structure floor by floor. Suited to standard commercial office buildings, hospitals and institutional buildings where site assembly is feasible and project timelines allow. More economical than unitised for low-to-mid-rise applications up to 15 floors.
Unitised curtain wall panels are factory-assembled as complete units and craned into position floor by floor. The preferred specification for high-rise towers above 15 floors, airports and fast-track commercial developments. Factory assembly improves quality control and reduces site time — critical for large infrastructure projects with compressed construction programmes.
| Feature | Stick-Built | Unitised |
|---|---|---|
| Assembly location | On-site | Factory |
| Suitable height | Up to 15 floors | Unlimited |
| Installation speed | Slower | Faster (crane lift) |
| Quality control | Site-dependent | Factory-controlled |
| Cost | Lower | Higher investment |
| Best for | Offices, hospitals, institutions | High-rise towers, airports |
| IS 875 compliance | Yes | Yes |
| ECBC compliance | DGU option | DGU option |
Aluminium curtain wall systems for commercial office towers and mixed-use high-rise developments. Full structural engineering package for RERA and local body authority submission. Systems designed to wind zone requirements for the specific project location across India.
Curtain wall facades for airport terminal buildings, transit concourses and public infrastructure. Airport Authority of India submission documentation supplied. Systems specified for AAI and private airport terminal projects with bird-strike glazing options available.
Aluminium curtain wall systems for hospital buildings, medical college blocks and institutional campus buildings. ECBC-compliant double-glazed options reduce solar heat gain for air-conditioned hospital environments. NBC 2016 inter-floor fire stopping supplied as standard.
Curtain wall facades for SEZ commercial buildings and IT park campuses. Stick-built systems are the standard specification for mid-rise SEZ office blocks. Full landlord documentation package for SEZ authority submission.
Railings India, part of Sun Corporation India, manufactures stick-built and unitised aluminium curtain wall mullion systems from Hyderabad for IT park developers, airport authorities, PMC consultants and EPC facade contractors. Reference supply includes SEZ IT Park (Bengaluru) ECBC DGU facade across 3 towers, GMR Hyderabad Airport terminal glazing and G+40 Residential Tower (Hyderabad) commercial podium curtain wall — with IS 875 Part 3 wind calculations, ECBC U-value / SHGC documentation and IS 617 aluminium MTCs supplied as standard on curtain wall orders.
Reference specification matrix for PMC technical submittals and EPC facade BOQs. Fenestration performance values align to ECBC 2017 — U-value ≤ 3.3 W/m²K, SHGC ≤ 0.25. Structural design references IS 875 Part 3 for wind load by zone and building height.
| Application | Building type | Mullion profile | Glazing spec | ECBC target | Standard |
|---|---|---|---|---|---|
| SEZ IT Park — tower facade (Bengaluru) | Commercial / SEZ | 6063-T5 stick-built mullion | DGU 24 mm ECBC | U ≤ 3.3, SHGC ≤ 0.25 | ECBC 2017 + IS 875 Part 3 |
| Airport terminal expansion glazing | Assembly / aviation | 6061-T6 heavy mullion | 12.38 mm SGP laminated | Safety glass — AAI spec | IS 875 + AAI + IS 2553 |
| G+40 tower podium curtain wall | High-rise mixed-use | 6063-T5 unitised panel | DGU 24 mm | U ≤ 3.3, SHGC ≤ 0.25 | ECBC + IS 875 Zone III |
| GMR Hyderabad Airport landside facade | Aviation | 6061-T6 stick-built | 10.38–12.38 mm laminated | AAI safety glazing | IS 875 Part 3/5 + AAI |
| Microsoft Campus corporate facade | Commercial campus | 6063-T5 stick-built | DGU 24 mm low-E | U ≤ 3.3, SHGC ≤ 0.25 | ECBC 2017 + NBC |
| IIT Hyderabad institutional facade | Institutional | 6063-T5 stick-built | DGU 20–24 mm | Standard commercial ECBC | IS 875 + IS 617 |
| High-rise tower typical floor glazing | Commercial / residential | 6063-T5 unitised | DGU 24 mm | U ≤ 3.3, SHGC ≤ 0.25 | ECBC + IS 875 high-rise wind |
| System type | Profile grade | Glazing / ECBC | Rationale |
|---|---|---|---|
| Stick-built — IT park / commercial | 6063-T5 | DGU 24 mm — U ≤ 3.3, SHGC ≤ 0.25 | Flexible geometry; ECBC green building compliance |
| Unitised — high-rise tower | 6063-T5 / 6061-T6 | DGU 24 mm low-E | Factory-assembled; faster high-rise installation |
| Heavy mullion — airport / assembly | 6061-T6 | 12.38 mm SGP laminated | IS 875 high wind + AAI safety glass requirement |
| PVDF finish — coastal / premium | 6063-T5 PVDF (Kynar) | DGU 24 mm — U ≤ 3.3 | 15–20 year colour retention; coastal corrosion resistance |
Decision reference for PMC teams selecting facade systems by building height and programme. See NBC 2016 compliance guide for safety glazing requirements.
| Factor | Stick-built curtain wall | Unitised curtain wall | Window wall system | Structural glazing |
|---|---|---|---|---|
| Typical height | G+5 to G+25 | G+20 to G+60 | G+3 to G+15 | G+10 to G+40 |
| ECBC performance | U ≤ 3.3, SHGC ≤ 0.25 | U ≤ 3.3, SHGC ≤ 0.25 | U ≤ 3.3 | U ≤ 3.3, SHGC ≤ 0.25 |
| Installation speed | Moderate — site assembly | Fastest — crane lift panels | Fast — per-floor install | Slow — specialist labour |
| Sector guide | IT parks | High-rise | IT parks | Airports |
| Product page | Curtain wall | Curtain wall | Aluminium windows | Curtain wall |
Documents supplied for curtain wall PMC submittal packages. Request via project enquiry.
| # | Document | Format | PMC use |
|---|---|---|---|
| 1 | IS 875 Part 3 wind load calculation — floor-wise | PDF + calc sheet | Structural design basis approval |
| 2 | ECBC glazing performance data — U-value, SHGC, VT | Green building certification | |
| 3 | NBC safety glazing compliance statement | Authority submittal | |
| 4 | AutoCAD shop drawings — elevation, section, anchor detail | DWG + PDF | Design freeze / GFC |
| 5 | Aluminium MTC — IS 617 grade 6063-T5 / 6061-T6 | PDF per batch | Material approval |
| 6 | Glass MTC — IS 2553 / IS 16613 DGU | PDF per batch | Material approval |
| 7 | Finish specification sheet (PVDF / powder coat RAL) | Architect colour approval | |
| 8 | Installation method statement — anchor / bracket fixing | Site safety plan | |
| 9 | Third-party inspection coordination letter | PMC QA protocol | |
| 10 | O&M manual — gasket replacement, panel reglazing | Handover dossier |
PMC pre-submittal checklist: □ ECBC U ≤ 3.3 / SHGC ≤ 0.25 confirmed □ IS 875 wind zone and building height on calc □ Mullion profile grade (6063-T5 / 6061-T6) □ DGU pane thickness and low-E spec □ Anchor / bracket detail on drawings □ Shop drawings stamped pre-GFC □ PVDF finish spec where coastal
| Stage | EPC action | Railings India deliverable | Duration | Approval gate |
|---|---|---|---|---|
| 1. Enquiry | Share facade elevation, wind zone, ECBC target | Budgetary spec + ECBC matrix | 3–5 days | PMC + facade consultant |
| 2. Technical submittal | Issue LOI / draft PO | Full document pack (items 1–8) | 7–10 days | PMC + developer |
| 3. Shop drawing approval | Comment anchor detail, mullion centres | Revised stamped facade drawings | 10–14 days | PMC design freeze |
| 4. GFC release | Confirm panel quantities per elevation | Final BOQ + production release | 3 days | EPC procurement |
| 5. Fabrication | — | Hyderabad factory QA + batch MTCs | 6–10 weeks | EPC factory inspection (optional) |
| 6. Mock-up (if required) | Install sample facade panel on site | Performance test report (water / air) | 2–3 weeks | Architect + PMC sign-off |
| 7. Dispatch & installation | Floor-wise / elevation delivery programme | Packed panels + install guide | Per programme | Site logistics + crane plan |
| 8. Handover | Submit as-built + dossier | O&M manual + ECBC compliance pack | 5–7 days | PMC close-out |
Project references drawn from Railings India portfolio on case studies and projects. No additional project names introduced.
| Project / zone | Sector | Scope | Key specification | Documentation |
|---|---|---|---|---|
| SEZ IT Park (Bengaluru) | Corporate / SEZ | Aluminium curtain wall — 3 towers, 12,000 sqft | 6063-T5, ECBC DGU U ≤ 3.3 | ECBC + IS 875 + shop drawings |
| GMR Hyderabad Airport | Aviation | Terminal facade glazing — landside zones | 6061-T6, 12.38 mm SGP laminated | IS 875 + AAI submittal |
| G+40 Residential Tower (Hyderabad) | High-rise mixed-use | Podium curtain wall — commercial base | 6063-T5 unitised, DGU 24 mm | ECBC + IS 875 Zone III |
| Airport Terminal Expansion | Aviation | Expansion zone curtain wall mullions | 6061-T6, assembly zone glazing | IS 875 + AAI + NBC safety glass |
Outcome — SEZ IT Park (Bengaluru): Aluminium curtain wall facade across 3 towers — 6063-T5 profiles with ECBC DGU documentation (U ≤ 3.3, SHGC ≤ 0.25) for green building certification.
IT park case study → · Airport case study → · IT park sector guide → · High-rise sector guide → · Manufacturer credentials →
Curtain wall systems in India must be designed to IS 875 Part 3 (Wind Loads on Buildings and Structures). The applicable wind zone is determined by project location. We supply wind load calculations stamped by a structural engineer for all curtain wall projects. Documentation is accepted by local bodies and EPC PMCs across India.
Stick-built systems are assembled on-site from individual sections — more economical for buildings up to 15 floors. Unitised systems are factory-assembled panels lifted into position by crane — faster installation and better quality control for high-rise towers and airports where site assembly is impractical.
Yes. Our curtain wall systems are available with double glazed units (DGU) meeting ECBC 2017 requirements for commercial buildings. U-value and SHGC documentation is supplied for building energy performance submission. This is required for IGBC-rated buildings and government projects in energy-regulated states.
We supply AutoCAD shop drawings (plan, elevation, sections at all connections), structural calculations to IS 875 Part 3, material certificates for aluminium and glass, sealant specifications, inter-floor fire stopping details and installation methodology statements. Full package for EPC tender submission and authority approval.
Our minimum curtain wall supply is 1000 sq ft of facade area. For large projects (10,000+ sq ft), we provide dedicated project engineering, fixed-price supply contracts and site coordination. Contact our technical team with your project drawings for a detailed assessment and pricing.
All curtain wall systems engineered to Indian wind load and energy standards. Structural calculations supplied for authority submission.
Both system types from one manufacturer. Select the right specification for your project height, programme and budget.
Shop drawings, wind load calculations, material certificates and fire stopping details supplied as standard for EPC tender and authority submission.
Curtain wall systems supplied to large-scale projects across all states. Factory-direct pricing with Pan India logistics and site coordination.
Submit your project facade area, height and location. Our technical team responds within 24 hours with system recommendations and pricing.
Request a QuoteStick-built curtain wall is assembled on site, piece by piece — mullions fixed to the structure, transoms clipped in, glass panels installed from outside on scaffolding or cradle. This system is preferred for buildings with irregular geometry, complex corners, or where site access for large unitised panel delivery is constrained. It requires more site time and more skilled installation labour than unitised, but offers greater flexibility to accommodate site dimensions and structural movement.
Unitised curtain wall is assembled in the factory as storey-height or multi-storey panels — complete with glass, seals and drainage channels — which are lifted into position by crane and clicked together at the slab edge. Faster on-site installation, better factory quality control, and better suited to repetitive high-rise facades where the speed advantage per floor accumulates significantly over 30–50 floors. The trade-off is the need for tight dimensional tolerance between structural slab positions and factory panel dimensions — requires careful survey and coordination before fabrication commences.
Curtain wall systems for ECBC-compliant commercial buildings require thermally broken mullion profiles — the aluminium inner and outer faces are separated by a polyamide thermal break, reducing the frame U-value from approximately 6 W/m²K (non-broken) to 2.0–3.5 W/m²K (thermally broken). Combined with DGU low-e glazing, this brings the overall curtain wall assembly to ECBC-compliant U-values for most Indian climate zones. We supply structural calculations, thermal performance data and ECBC compliance documentation for all curtain wall systems supplied to commercial projects requiring green building or ECBC certification.
