42 openings + 6 arch windows. NDMC heritage sign-off obtained. 18-week project. Custom 22-mm extrusion die commissioned to match the 1948 original.
A 1948 Lutyens-zone bungalow on a 1,000 sqyd plot in central Delhi. The original windows were teak with single-glazed clear glass — beautiful but rotting at the sills, single-glazed (negligible thermal performance) and beyond economical restoration. The owner's requirement: replicate the original look exactly, retain the arches, but quietly slot in modern thermal performance and acoustic resistance for the Mahanagar-Marg-facing facade.
NDMC heritage cell signoff was required because the property is in the protected Lutyens Bungalow Zone. Material change was permitted only with proof of visual continuity.
Standard slim aluminium casement profiles are 45–65 mm in sightline. The original teak windows were 22 mm. The visual mismatch would have been instantly visible and the heritage cell would have rejected the application.
Our engineering team designed a custom-extruded slim profile with a 22 mm visible sightline + 45 mm reveal depth — matching the original geometry exactly while providing the structural depth for double glazing. Powder-coat was custom-matched in a 200-litre run to the surviving original teak shade.
| Element | Spec | Why |
|---|---|---|
| Profile | Custom 22-mm slim casement, 45 mm depth | Visual match with original teak window |
| Glass | 4 mm + 12 mm air + 4 mm acoustic laminate | STC 38 (cuts traffic noise from 72 dB outside to ~38 dB inside) |
| Arches (6) | CNC-bent profile, hand-finished mitre | Reproduces the Lutyens semi-circle arch over the verandah |
| Hardware | HOPPE brass-finish handles + ROTO friction stays | Brass-look matches the home's door hardware |
| Coating | Custom-matched warm-brown polyester, satin sheen | Visual match to original teak finish |
| Phase | Weeks | Note |
|---|---|---|
| Design freeze + custom-die order | Weeks 1–2 | Die ordered same week as customer approval |
| Heritage approval (in parallel) | Weeks 1–6 | See above |
| Custom die commissioning at extruder | Weeks 3–9 | Jindal Aluminium die-shop |
| Production of profiles | Weeks 10–13 | First run of 850 kg |
| Fabrication, coating, glazing, hardware fit | Weeks 13–16 | At our Hyderabad factory |
| Transport Hyderabad → Delhi | Week 17 | 1,280 km road; insured + escorted for the custom dies |
| On-site installation | Weeks 17–18 | 9 working days, 2 crews |
| Snag closure + handover | Week 18 | 11 small snags, all closed in 4 days |
At any given time WoodenMax is running 10–12 live projects across India in parallel. This Delhi restoration was concurrent with the Mumbai BKC tower (above) and a 5-villa cluster in Hyderabad — all coordinated from our Hyderabad factory by the founding family, with execution on Delhi site led by a trained partner crew that has been with us since 2019.
For pricing on a restoration like this, see our calculators or share project drawings on our enquiry form; quote shared within 5 working days. GST 18% extra and transport governed by our policy.
Yes — we have done teak Lutyens, colonial steel, Bombay Art Deco and Pondicherry French shutter replications. Each requires a custom die plus 6–8 weeks lead time. We do 4–6 such projects a year.
We can. For Delhi NDMC, Mumbai BMC heritage cell, Kolkata KMC, Chennai Heritage Conservation Committee — we have a consultant panel that does the documentation, charged at actuals.
Yes. The challenge is usually matching the proportions, the muntin / Georgian-bar pattern, and the colour. We work from existing window photos + dimensions.
Delhi is 1,280 km from our Hyderabad factory — beyond the 1,000 km free-transport zone — so freight is billed at actuals on the invoice and documented separately for full transparency. See our GST & transport policy.
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