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Double glazing cost Netherlands 2026 — price guide for HR++ and triple glass

What does double glazing or HR++ glass replacement cost in the Netherlands in 2026? Overview of costs per m² and per window for HR++, triple glazing and uPVC frames, including subsidies and when an architect is required.

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Quick answer

Double glazing or HR++ glass replacement costs between € 150 and € 450/m² of glass in the Netherlands in 2026, depending on the glass type, frame material and window size. With ISDE subsidies, net costs are significantly lower. For changes to window frames in a listed building, an architect is required.

Double glazing costs per m² and per window 2026

| Glass / frame type | Cost per m² (incl. VAT) | Cost per standard window (approx. 1.2 m²) | |---|---|---| | HR++ glass (Ug 1.1 W/m²K) | € 150–€ 250/m² | € 180–€ 300 per window | | Triple glazing (Ug 0.5–0.7 W/m²K) | € 200–€ 400/m² | € 240–€ 480 per window | | HR++ + uPVC frame (new) | € 250–€ 450/m² incl. frame | € 400–€ 700 per window incl. frame | | HR++ + wooden frame (new) | € 350–€ 600/m² incl. frame | € 500–€ 900 per window incl. frame | | Roof window (Velux, triple glazing) | € 800–€ 2,000 per roof window | Including installation | | Large façade window (> 2 m²) | € 200–€ 500/m² glass | Excluding frame | | Sliding door or folding wall (aluminium) | € 600–€ 1,500/m² | Architect for structural advice on large opening |

When do double glazing costs increase significantly?

| Factor | Effect on cost | |---|---| | Full frame replacement (incl. demolition) | +€ 200–€ 500 per window extra | | Listed building or protected townscape | +30–60% (approved glass types, planning permission) | | Large glass opening > 2.5 m (frame extension) | +€ 1,500–€ 5,000 (structural modification required) | | Special frame shape (arch, triangle) | +40–80% on frame price | | All windows in house replaced simultaneously | -8–15% (volume discount with glazier) | | Frames incl. insulating sill and lintel | +€ 500–€ 1,500 per frame |

When is an architect required for glazing replacement?

  • Listed building or protected townscape: architect determines approved glass type and frame profile; handles planning permission
  • Large glass opening (bay window, frame extension): architect + structural engineer for structural assessment
  • Roof window in protected building: architect advises on permitted size and position
  • Glazing replacement as part of larger renovation: architect integrates windows into energy concept

ISDE subsidy 2026 — glazing

| Measure | Maximum ISDE compensation | |---|---| | HR++ glass (Ug ≤ 1.2) | Up to € 100 per m² glass (max. € 3,000 per home) | | Triple glazing (Ug ≤ 0.8) | Up to € 150 per m² glass (max. € 4,000 per home) | | Insulating glazing + frame combined | Higher combined bonus possible |

Conclusion

Double glazing replacement costs between € 150 and € 450/m² in 2026 depending on glass type. With ISDE subsidies, net costs are considerably lower. For listed buildings, large glass openings or frame changes, an architect is required.

archi.sulerr.com handles the planning permission, frame detailing and energy calculation for your glazing project.

Double glazing cost Netherlands 2026 — price guide for HR++ and triple glass — archi.sulerr.com