Glass is usually the fastest mover in aluminium window cost with glass included. Base quotes assume 6mm clear toughened; upgrading to 8/10/12mm, DGU, or laminated safety glass adds a predictable ₹/sqft delta on top of the frame band. This page explains each tier and lets you model the total on the calculator below.
Use the glass dropdown in the tool to see how adders stack on 29mm premium sliding — the same glass logic applies on casement and system pages, though heavy lites may trigger multipoint hardware automatically. For frame-only ₹/sqft bands, start at the master per sqft guide.
Frame ₹/sqft and glass ₹/sqft are additive on most WoodenMax calculators. The table below shows typical glass add-ons on premium 29mm sliding — your product page may show slightly different numbers, but the order of cost stays the same.
Glass type
Typical add-on vs 6mm base
Best for
6mm clear toughened
Included (base)
Standard bedrooms, internal vents
8mm clear toughened
+₹20/sqft
Slightly larger lites, moderate wind
10mm clear toughened
+₹40/sqft
Ground floor, wider panels
12mm clear toughened
+₹65/sqft
Heavy single lite — check series limit
DGU 20mm (double glazed)
+₹180/sqft
Traffic noise, AC efficiency, west-facing rooms
Safety laminated 13.52mm
+₹220/sqft
Security, nursery, low sill openings
Example: On a 6 ft × 7 ft slider (42 sqft), moving from 6mm to DGU adds roughly ₹7,500 in glass alone before hardware upgrades — use the calculator to see your exact opening.
Glass & Frame Cost Calculator — See Total With Upgrades
Enter size, then switch the Glass Type dropdown to watch frame + glass + mesh move together on 29mm premium sliding. Casement and system tools on linked product pages apply the same glass tiers with their own hardware rules.
No hidden cost • Free estimate • Price based on your size • GST extra
Live Price Calculator
Total Area: 0.00 sq.ft
Base includes 6mm clear glass. Thicker glass options include additional costs.
Mesh is optional. Check the checkbox if you wish to add mesh.
Per Window (+20%):₹0
Per Window (-20%):₹0
Total Cost - All Windows (Range):₹0 - ₹0
Total (+20%):₹0
Total (-20%):₹0
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Pricing Information
Prices shown are based on August 2026 market rates for premium/medium range items
Rates may change due to inflation, market fluctuations, and material cost variations
Wastage percentage is not included in this calculator - actual prices may be higher
Final quotation will be provided after site inspection and exact measurements
GST extra as applicable
Glass Types Explained — Thickness & Construction
Single toughened (6–12mm)
One lite of heat-strengthened glass. Thicker lites resist flex and impact better — profile series caps maximum thickness (Domal often stops at 6–8mm; system series accepts 12mm+). Thicker glass adds weight; casement tools may auto-apply multipoint locks above 10mm.
DGU — double glazed unit
Two lites separated by an air or argon gap (typically 20mm total unit). Cuts heat transfer and outside noise versus single glass. Requires a deeper profile bead — use system or premium series, not budget Domal on large DGU panels. Spec detail: system glass options.
Laminated safety glass
Two glass layers bonded with PVB interlayer — holds together if broken. Common 13.52mm spec for ground-floor security and acoustic goals. Heavier than single toughened; verify roller or hinge capacity on your series.
Full Cost Stack — Frame, Glass, Hardware, Install
Frame (fixed for a given series)
27mm Domal through 40mm system each has its own base ₹/sqft curve — glass adders sit on top. Pick the frame first on the matching product page, then layer glass.
Glass (variable — this page’s focus)
Toughened tier upgrades, DGU, laminated, and future low-e coatings change ₹/sqft linearly with area. On a whole-home BOQ, living-room DGU + bedroom 6mm mesh is a normal split.
Hardware triggered by glass weight
Multipoint locks, heavy-duty rollers, or reinforced friction stays appear when glass exceeds series defaults — the casement calculator applies this automatically; sliding may add multipoint as an optional line.
Installation
Heavier units need more labour for lifting and glazing — usually inside the quoted band unless crane or high-rise access is required.
Choosing Glass — Cost vs Comfort vs Safety
Cheapest path
6mm single toughened on Domal or 29mm sliding — acceptable for rear bedrooms and rental stock where noise and thermal performance are secondary.
Best value for Indian homes
DGU on road-facing living/bedroom sliders plus 6mm single on mesh-track bedrooms. Pair with 3-track sliding where insects matter.
Premium / safety path
Laminated or thick toughened on ground floor, nursery, and full-height glass near balconies. Worth the ₹/sqft premium when replacement cost of failure is high.
Maintenance note
Clean DGU spacers and edges gently — avoid harsh acids on coatings. Single toughened is easier to replace if a lite cracks.
Rooms Where Glass Upgrades Pay Off
Bedrooms facing main roads — DGU or laminated cuts traffic noise more than thicker single glass alone.
West-facing living rooms — DGU reduces heat gain; lowers AC load in Hyderabad, Delhi, and coastal cities.
Ground-floor nursery or study — laminated safety glass for impact resistance.
Internal bathroom / utility — 6mm single is usually enough; spend the budget on casement sealing instead.
Glass Adders on Sliding Calculators — How to Read This Page
Glass ₹/sqft here is additive to frame — on sliding, frame band depends on series first:
35mm system + laminated DGU: upper band — system sliding
Use this breakdown to understand glass lines; use the product calculator for frame + hardware + install context.
Why Sliding Owners Should Model Glass in the Calculator
Simple answer: Upgrading from 6 mm to DGU can add ₹150–400/sqft — on a 6×7 ft slider that is ₹6,000–17,000 per opening before frame tier.
Best for: Comparing bedroom mesh track (single glass) vs living DGU on the same size opening.
After glass choice, match series to weight — heavy glass on Domal is the most common post-install regret.
FAQs
How much does DGU glass add versus 6mm toughened?
DGU upgrades air gap insulation and usually adds a higher ₹/sqft delta than single toughened — exact adders appear in the calculator dropdown for premium sliding.
When is laminated glass worth it?
Safety, security, and acoustic goals — especially ground floor or nursery rooms.
Does thicker glass need stronger hardware?
Often yes — sash weight rises; multipoint or heavy-duty rollers may be required.
Does WoodenMax supply and install aluminium windows across India?
Yes. We work in Hyderabad, Delhi NCR, Bangalore, Mumbai, Pune, Jaipur, Lucknow, and more. Use the calculator on this page, then WhatsApp your sizes and city for a firm quote after site check.
