Glass Replacement Cost Calculator for NZ
Estimate the cost of window glass replacement, shower screens, or glass balustrades. Useful for budgeting a repair or renovation, or sense-checking a glazier's quote.
What Drives Glazing Pricing in NZ
- Glass type — standard float glass is cheapest; toughened, laminated, Low-E and tinted glass all cost more.
- Size — larger panes cost more, and very large or oversized panes may need special handling/access.
- Safety compliance — Building Code Clause F4 (Safety from Falling) mandates safety glass in specific locations (near doors, low sills, wet areas, balustrades) — this isn't optional where it applies.
- Hardware — frameless systems (shower screens, balustrades) need heavier glass and precision fixings, which costs more than framed equivalents.
Typical NZ Glazing Pricing (2026)
| Job | Typical Cost |
|---|---|
| Double-glazed window unit, standard | $400–$650 installed |
| Double-glazed window unit, large/bay | $650–$900 installed |
| Shower screen, single fixed panel | $800–$1,200 |
| Shower screen, frameless walk-in | $1,500–$2,500 |
| Glass balustrade, per metre | $350–$700 |
Choosing a Glazier
- Confirm NZGMA (New Zealand Glass Merchants/Glaziers Association) membership.
- Get the glass specification in writing — toughened, laminated, or double-glazed, and which locations need Building Code F4 compliance.
- Check that weather seals and flashing are included in window replacement quotes, not just the glass unit.
- Ask about warranty on both the glass and the installation.
See our full glazier directory to find and compare rated local glaziers by city.